- Materia-seminarios

Seminar: Entanglement detection using Quantum Support Vector Machines
by Daniel Manzano 24 Sep '24

24 Sep '24

The Quantum Thermodynamics and Quantum Computation Group invites you to assist to this talk. Date: Thursday 27/9/2024 Time: 11:00 am Place: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Speaker: Ana Martínez. University of Granada. Title: Entanglement detection using Quantum Support Vector Machines Abstract: The quantum separability problem addresses the detection of quantum entanglement, a fundamental feature of quantum mechanics, meaning that we want to determine if a certain quantum state is entangled or separable. This problem has been shown to be NP-hard (1). Our starting point will be the works from Refs (2) and (3), in which the problem is taken as a binary classification task that is approached with classical machine learning models. In this work, we propose the application of quantum machine learning, in particular quantum support vector machines (QSVM), to the quantum separability problem. By studying and optimizing various encoding circuits, the quantum SVM shows comparable discrimination power to other traditional classical kernels. (1) Gurvits L. Classical deterministic complexity of Edmonds’Problem and quantum entanglement (2) Casalé B, Di Molfetta G, Anthoine S, Kadri H. Large-Scale Quantum Separability Through a Reproducible Machine Learning Lens. (3) Ureña J, Sojo A, Bermejo J, Manzano D. Entanglement detection with classical deep neural networks. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. https://meet.google.com/csb-snng-bmu We would also like to bring to your attention the groups seminar page https://ic1.ugr.es/eventos/wp/qjc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------------------------------- Daniel Manzano Quantum Thermodynamics and Quantum Computation Group University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 https://ic1.ugr.es/members/dmanzano/

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SEMINAR: Paula García-Molina (Instituto de Física Fundamental - CSIC)
by Michalis Skotiniotis 23 Sep '24

23 Sep '24

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 27/9/2024 Hora: 11:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Paula García-Molina (Instituto de Física Fundamental - CSIC) Titulo: Pseudospectral method for solving PDEs using Matrix Product States (arXiv:2409.02916) Resumen: This research focuses on solving time-dependent partial differential equations (PDEs), in particular the time-dependent Schrödinger equation, using matrix product states (MPS). We propose an extension of Hermite Distributed Approximating Functionals (HDAF) to MPS, a highly accurate pseudospectral method for approximating functions of derivatives. Integrating HDAF into an MPS finite precision algebra, we test four types of quantum-inspired algorithms for time evolution: explicit Runge-Kutta methods, Crank-Nicolson method, explicitly restarted Arnoli iteration and split-step. The benchmark problem is the expansion of a particle in a quantum quench, characterized by a rapid increase in space requirements, where HDAF surpasses traditional finite difference methods in accuracy with a comparable cost. Moreover, the efficient HDAF approximation to the free propagator avoids the need for Fourier transforms in split-step methods, significantly enhancing their performance with an improved balance in cost and accuracy. Both approaches exhibit similar error scaling and run times compared to FFT vector methods; however, MPS offer an exponential advantage in memory, overcoming vector limitations to enable larger discretizations and expansions. Finally, the MPS HDAF split-step method successfully reproduces the physical behavior of a particle expansion in a double-well potential, demonstrating viability for actual research scenarios. El seminario es accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. https://meet.google.com/csb-snng-bmu También os recordamos a todos la página web del Seminario de Grupos, https://ic1.ugr.es/eventos/wp/qjc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday 27/9/2024 Time: 11:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Paula García-Molina (Instituto de Física Fundamental - CSIC) Title: Pseudospectral method for solving PDEs using Matrix Product States (arXiv:2409.02916) Abstract: This research focuses on solving time-dependent partial differential equations (PDEs), in particular the time-dependent Schrödinger equation, using matrix product states (MPS). We propose an extension of Hermite Distributed Approximating Functionals (HDAF) to MPS, a highly accurate pseudospectral method for approximating functions of derivatives. Integrating HDAF into an MPS finite precision algebra, we test four types of quantum-inspired algorithms for time evolution: explicit Runge-Kutta methods, Crank-Nicolson method, explicitly restarted Arnoli iteration and split-step. The benchmark problem is the expansion of a particle in a quantum quench, characterized by a rapid increase in space requirements, where HDAF surpasses traditional finite difference methods in accuracy with a comparable cost. Moreover, the efficient HDAF approximation to the free propagator avoids the need for Fourier transforms in split-step methods, significantly enhancing their performance with an improved balance in cost and accuracy. Both approaches exhibit similar error scaling and run times compared to FFT vector methods; however, MPS offer an exponential advantage in memory, overcoming vector limitations to enable larger discretizations and expansions. Finally, the MPS HDAF split-step method successfully reproduces the physical behavior of a particle expansion in a double-well potential, demonstrating viability for actual research scenarios. The seminar is accessible to undergraduate students, whom we strongly encourage to attend. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. https://meet.google.com/csb-snng-bmu We would also like to bring to your attention the groups seminar page https://ic1.ugr.es/eventos/wp/qjc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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Fwd: Daniel's talk at 10am Thuesday
by Daniel Manzano 15 Jul '24

15 Jul '24

If you’re free tomorrow afternoon, you can assist online to this nice talk. It will consist on a brief introduction to the Lindblad Master Eq. As well as several applications as quantum transport, open neural networks, and heat engines. Best, Dani. > Begin forwarded message: > > From: Jianshu Cao <jianshu(a)mit.edu> > Subject: Daniel's talk at 10am Thuesday > Date: 11 July 2024 at 11:58:42 GMT-4 > To: Daniel Manzano <manzano(a)onsager.ugr.es>, Ilia Tutunnikov <iliat(a)mit.edu>, Qutubuddin Md <qutubu(a)csrc.ac.cn>, Daniel Evan Piephoff <depiepho(a)mit.edu> > Cc: "Ivander, Felix" <felixivander(a)g.harvard.edu>, "ishaan_ganti(a)brown.edu" <ishaan_ganti(a)brown.edu>, Wasin Tiarawut <macwasin(a)mit.edu> > > > > Hello All: > > Daniel is visiting us at MIT and will present a talk on quantum dissipation on Tuesday (July 16) at 10 am (EST). Here is the Zoom link: > > https://mit.zoom.us/j/8839610308 <https://urldefense.com/v3/__https://mit.zoom.us/j/8839610308__;!!D9dNQwwGXt…> > Join our Cloud HD Video Meeting <https://urldefense.com/v3/__https://mit.zoom.us/j/8839610308__;!!D9dNQwwGXt…> > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference room solution used around the world in board, conference, huddle, and training rooms, as well as executive offices and classrooms. Founded in 2011, Zoom helps businesses and organizations bring their teams together in a frictionless environment to get more done. Zoom is a publicly traded company headquartered in San Jose, CA. > mit.zoom.us <http://mit.zoom.us/> > > > > ---------------------------------------------------------- > Professor Jianshu Cao > Department of Chemistry, MIT > Cambridge, MA 02139 > Tel: 617-253-1563 > http://web.mit.edu/jianshucaogroup/index.html <https://urldefense.com/v3/__http://web.mit.edu/jianshucaogroup/index.html__…>

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SEMINARIO QuThCo---Rhea Alexander-Turner (Universidad de Granada)
by Michalis Skotiniotis 19 Jun '24

19 Jun '24

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 21 Junio 2024 Hora: 11:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Rhea Alexander-Turner (Universidad de GRanada)) Titulo: Trade-off relations for magic state distillation protocols based on stabilizer codes Resumen: Magic state distillation is a key subroutine in many leading schemes for achieving a fault tolerant quantum computer. However, despite significant recent progress, the overhead of state-of-the-art protocols for magic distillation is still eyewatering. This poses the natural question: can we do better, even in principle? In this talk I’ll introduce the basics of majorization theory - an abstract mathematical toolset with a wide range of applications spanning economics [*] and quantum theory alike. I’ll discuss some recent work where we apply the machinery of majorization to quasiprobability representations of magic states to obtain entropic constraints on the achievable overhead of magic distillation. These constraints give rise to fundamental trade-off relations on the code parameters appearing in practical distillation protocols. From a more foundational perspective, in this picture the processing of magic states under stabilizer circuits (a universal model for quantum computing) can be viewed as akin to classical statistical mechanics with the appearance of negative entropies. In this context, we find that negative entropy is equivalent to Wigner negativity, and thus constitutes a necessary ingredient for quantum computational speed-up. [*] https://en.wikipedia.org/wiki/Gini_coefficient El seminario es accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. https://meet.google.com/csb-snng-bmu También os recordamos a todos la página web del Seminario de Grupos, https://ic1.ugr.es/eventos/wp/qjc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday 21 June 2024 Time: 11:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Rhea Alexander-Turner Title: Trade-off relations for magic state distillation protocols based on stabilizer codes Abstract: Magic state distillation is a key subroutine in many leading schemes for achieving a fault tolerant quantum computer. However, despite significant recent progress, the overhead of state-of-the-art protocols for magic distillation is still eyewatering. This poses the natural question: can we do better, even in principle? In this talk I’ll introduce the basics of majorization theory - an abstract mathematical toolset with a wide range of applications spanning economics [*] and quantum theory alike. I’ll discuss some recent work where we apply the machinery of majorization to quasiprobability representations of magic states to obtain entropic constraints on the achievable overhead of magic distillation. These constraints give rise to fundamental trade-off relations on the code parameters appearing in practical distillation protocols. From a more foundational perspective, in this picture the processing of magic states under stabilizer circuits (a universal model for quantum computing) can be viewed as akin to classical statistical mechanics with the appearance of negative entropies. In this context, we find that negative entropy is equivalent to Wigner negativity, and thus constitutes a necessary ingredient for quantum computational speed-up. [*] https://en.wikipedia.org/wiki/Gini_coefficient The seminar is (is not) accessible to undergraduate students, whom we strongly encourage to attend. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. https://meet.google.com/csb-snng-bmu We would also like to bring to your attention the groups seminar page https://ic1.ugr.es/eventos/wp/qjc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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Seminario
by Daniel Manzano 05 Jun '24

05 Jun '24

Hola, os recuerdo que mañana hay un seminario muy interesante. Martes 4 de junio a las 10:00 en el aula A22 de la Facultad de Ciencias. Fluctuations, precision and transport far from thermodynamic equilibrium Single-molecule and particle-tracking experiments interrogate physical observables along individual trajectories. These observables typically correspond to low-dimensional projections of high-dimensional dynamics or a spatially coarse-grained (e.g. "binned") version thereof, and the experiments are generically analyzed by time-averaging along individual traces. It has long been known that projections that couple to slow hidden degrees of freedom give rise to memory in the observed dynamics. However, we are only beginning to understand their implications for thermodynamics and observed transport, in particular in systems driven far from thermodynamic equilibrium. I will review our recent efforts on how to describe and understand fluctuations, dissipation, and precision on the basis of path-based observables in systems driven arbitrarily far form equilibrium. Un saludo. --------------------------------------------------------------------------------- Daniel Manzano Quantum Thermodynamics and Quantum Computation Group University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 https://ic1.ugr.es/members/dmanzano/

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Fwd: Seminario Aljaz Godec: Fluctuations, precision and transport far from thermodynamic equilibrium
by Daniel Manzano 28 May '24

28 May '24

--------------------------------------------------------------------------------- Daniel Manzano Quantum Thermodynamics and Quantum Computation Group University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 https://ic1.ugr.es/members/dmanzano/ > Begin forwarded message: > > From: Raúl Rica <rul(a)ugr.es> > Subject: Seminario Aljaz Godec: Fluctuations, precision and transport far from thermodynamic equilibrium > Date: 28. May 2024 at 14:18:39 CEST > To: infoconfe(a)listas.ugr.es > Cc: "nanotlab(a)ugr.es" <nanotlab(a)ugr.es> > > Buenas tardes, > > el Prof. Aljaz Godec (Mathematical bioPhysics group, Max Planck Institute for Multidiscipliary Sciences) impartirá un seminario el próximo martes 4 de junio a las 10:00 en el aula A22 de la Facultad de Ciencias. > > Resumen del seminario: > > Fluctuations, precision and transport far from thermodynamic equilibrium > Single-molecule and particle-tracking experiments interrogate physical observables along individual trajectories. These observables typically correspond to low-dimensional projections of high-dimensional dynamics or a spatially coarse-grained (e.g. "binned") version thereof, and the experiments are generically analyzed by time-averaging along individual traces. It has long been known that projections that couple to slow hidden degrees of freedom give rise to memory in the observed dynamics. However, we are only beginning to understand their implications for thermodynamics and observed transport, in particular in systems driven far from thermodynamic equilibrium. I will review our recent efforts on how to describe and understand fluctuations, dissipation, and precision on the basis of path-based observables in systems driven arbitrarily far form equilibrium. > > Un saludo > > Raúl > > -- > Dr. Raúl A. Rica Alarcón > Nanoparticles Trapping Laboratory > Department of Applied Physics > School of Sciences > Universidad de Granada > Avda. Fuentenueva s/n > 18071, Granada, Spain > +34 958240015 (Office) > +34 958241000 Ext. 20631 (Lab) > rul(a)ugr.es <mailto:rul@ugr.es> > https://sites.google.com/view/nanotlab > > -- > Cláusula de Confidencialidad: "Este mensaje se dirige exclusivamente a su destinatario y puede contener información privilegiada o confidencial. Si no es Ud. el destinatario indicado, queda notificado de que la utilización, divulgación o copia sin autorización está prohibida en virtud de la legislación vigente. Si ha recibido este mensaje por error, se ruega lo comunique inmediatamente por esta misma vía y proceda a su destrucción. > This message is intended exclusively for its addressee and may contain information that is CONFIDENTIAL and protected by professional privilege. If you are not the intended recipient you are hereby notified that any dissemination, copy or disclosure of this communication is strictly prohibited by law. If this message has been received in error, please immediately notify us via e-mail and delete it"

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SEMINARIO QuThCo---Lectures on Quantum Thermodynamics part 3---Alvaro Tejero (Universidad de Granada).
by Michalis Skotiniotis 22 May '24

22 May '24

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 24 de Mayo Hora: 11:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Alvaro Tejero (Departamento de Electromagnetismo y Física de la Materia, Universidad de Granada) Titulo: Lectures on Quantum Thermodynamics III Resumen: Quantum thermodynamics arises when extending the ideas from classical thermodynamics to the microscopic, i.e., quantum, regime. In this course, we will address the fundamentals of the theory focusing on the laws of quantum thermodynamics. We will also present the main practical applications of this theory, such as quantum thermal machines and batteries, and point out the main conceptual issues when dealing with quantities such as heat, work, or entropy. Please note: This is a graduate-level course. Attendees are expected to have a minimum understanding of thermodynamics and quantum theory. While familiarity with Master Equation techniques is advisable (see Ref. [1]), a general overview will be provided at the beginning of the course. Structure: 1. Introduction and historical motivation 2. Previous key concepts 3. Laws of Quantum Thermodynamics 4. Entropy production, Quantum Information and Thermodynamics 5. Applications: Quantum thermal engines and batteries [1] D. Manzano, A short introduction to the Lindblad master equation, AIP Advances 10, 025106 (2020). (https://arxiv.org/abs/1906.04478) [2] P. Strasberg, Quantum Stochastic Thermodynamics: Foundations and Selected Applications. Oxford University Press (2022) [3] S. Deffner and S. Campbell, Quantum Thermodynamics: An introduction to the thermodynamics of quantum information, Morgan & Claypool Publishers (2019). (https://arxiv.org/abs/1907.01596) [4] F. Binder et al. (eds.), Thermodynamics in the quantum regime. Springer (2018) [5] S. Vinjanampathy and J. Anders, Quantum Thermodynamics, Contemporary Physics, 57, 545 (2016) (https://arxiv.org/abs/1508.06099) [6] G. Landi and M. Paternostro, Irreversible entropy production, from quantum to classical, Rev. Mod. Phys. 93, 035008 (2021) (https://arxiv.org/abs/2009.07668) [7] S. Bhattacharjee and A. Dutta, Quantum thermal machines and batteries, Eur. Phys. J. B 94, 239 (2021) (https://arxiv.org/abs/2008.07889) [8] N. Myers, O. Abah and S. Deffner, Quantum thermodynamic devices: from theoretical proposals to experimental reality, AVS Quantum Sci. 4, 027101 (2022) (https://arxiv.org/abs/2201.01740) El seminario es accesible para los estudiantes de grado con conocimientos basicos en Termodynámica y Información Cuántica , a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. https://meet.google.com/mmj-wgez-dee También os recordamos a todos la página web del Seminario de Grupos, https://ic1.ugr.es/eventos/wp/qjc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday May 24th Time: 11:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Alvaro Tejero (Department od electromagnetism and Condensed Matter, University of Granada ) Title: Lectures on Quantum Thermodynamics III Abstract: Quantum thermodynamics arises when extending the ideas from classical thermodynamics to the microscopic, i.e., quantum, regime. In this course, we will address the fundamentals of the theory focusing on the laws of quantum thermodynamics. We will also present the main practical applications of this theory, such as quantum thermal machines and batteries, and point out the main conceptual issues when dealing with quantities such as heat, work, or entropy. Please note: This is a graduate-level course. Attendees are expected to have a minimum understanding of thermodynamics and quantum theory. While familiarity with Master Equation techniques is advisable (see Ref. [1]), a general overview will be provided at the beginning of the course. Structure: 1. Introduction and historical motivation 2. Previous key concepts 3. Laws of Quantum Thermodynamics 4. Entropy production, Quantum Information and Thermodynamics 5. Applications: Quantum thermal engines and batteries [1] D. Manzano, A short introduction to the Lindblad master equation, AIP Advances 10, 025106 (2020). (https://arxiv.org/abs/1906.04478) [2] P. Strasberg, Quantum Stochastic Thermodynamics: Foundations and Selected Applications. Oxford University Press (2022) [3] S. Deffner and S. Campbell, Quantum Thermodynamics: An introduction to the thermodynamics of quantum information, Morgan & Claypool Publishers (2019). (https://arxiv.org/abs/1907.01596) [4] F. Binder et al. (eds.), Thermodynamics in the quantum regime. Springer (2018) [5] S. Vinjanampathy and J. Anders, Quantum Thermodynamics, Contemporary Physics, 57, 545 (2016) (https://arxiv.org/abs/1508.06099) [6] G. Landi and M. Paternostro, Irreversible entropy production, from quantum to classical, Rev. Mod. Phys. 93, 035008 (2021) (https://arxiv.org/abs/2009.07668) [7] S. Bhattacharjee and A. Dutta, Quantum thermal machines and batteries, Eur. Phys. J. B 94, 239 (2021) (https://arxiv.org/abs/2008.07889) [8] N. Myers, O. Abah and S. Deffner, Quantum thermodynamic devices: from theoretical proposals to experimental reality, AVS Quantum Sci. 4, 027101 (2022) (https://arxiv.org/abs/2201.01740) The seminar is accessible to undergraduate students with a basic knowledge in Thermodynamics and Quantum Information, whom we strongly encourage to attend. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. https://meet.google.com/mmj-wgez-dee We would also like to bring to your attention the groups seminar page https://ic1.ugr.es/eventos/wp/qjc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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SEMINARIO QuThCo: Joe Dunlop (University of Exeter)
by Michalis Skotiniotis 16 May '24

16 May '24

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 17 Mayo 2024 Hora: 11:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Joe Dunlop (University of Exeter) Titulo: Thermodynamics of Dual-Purpose Qubit Operations Resumen: Information processing, quantum or classical, relies on channels transforming multiple input states to different corresponding outputs. It has been shown under very general conditions that physical implementations such operations must be thermodynamically irreversible, with work cost exceeding the difference in free energy between the average input and average output state. However, many concrete aspects have not previously been addressed, including the scale of the excess work. We here examine thermodynamically optimal protocols for the insightful case of non-unitary qubit operations with two input and output states, quantifying the work costs and building a physical interpretation of why the process must be irreversible. El seminario es (no es) accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. meet.google.com/pfu-awyh-hmz También os recordamos a todos la página web del Seminario de Grupos, https://ic1.ugr.es/eventos/wp/qjc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday 17 May 2024 Time: 11:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Joe Dunlop (University of Exeter) Title: Thermodynamics of Dual-Purpose Qubit Operations Abstract: Information processing, quantum or classical, relies on channels transforming multiple input states to different corresponding outputs. It has been shown under very general conditions that physical implementations such operations must be thermodynamically irreversible, with work cost exceeding the difference in free energy between the average input and average output state. However, many concrete aspects have not previously been addressed, including the scale of the excess work. We here examine thermodynamically optimal protocols for the insightful case of non-unitary qubit operations with two input and output states, quantifying the work costs and building a physical interpretation of why the process must be irreversible. The seminar is (is not) accessible to undergraduate students, whom we strongly encourage to attend. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. meet.google.com/pfu-awyh-hmz We would also like to bring to your attention the groups seminar page    https://ic1.ugr.es/eventos/wp/qjc/   where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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Fwd: [Materia] Seminario de investigación
by Daniel Manzano 09 May '24

09 May '24

Sent from my iPhone Begin forwarded message: > From: Ana P Millan <apmillan(a)ugr.es> > Date: 9 May 2024 at 15:51:44 CEST > To: Materia <materia(a)onsager.ugr.es> > Subject: [Materia] Seminario de investigación > > > Buenas tardes, > > Nos gustaría invitaros al siguiente seminario: > > Ponente: Dr. Nicholas Reynolds (Universidad de Granada - Dep. Matemática Aplicada). > > Hora y Lugar: 16 de Mayo de 12:00 a 13:00 en el aula A11. > > Título: Systems of coupled oscillators: From Stuart-Landau to Schrödinger-Lohe > Abstract: In this talk we will follow a natural progression of several models of synchronization dynamics. We will begin with the Stuart-Landau equation, the simplest description of a limit cycle oscillator, ˙z(t) = (α + iω − |z|2)z. Kuramoto’s famous model of phase synchronization was derived from coupling such oscillators and has seen a wealth of study from various scientific disciplines. > Despite this fact, the study of coupled Stuart-Landau oscillators, absent Kuramoto’s reduction, is largely absent until recently. I will present some preliminary results in this direction based off of a joint work with Ana P Millan, David Poyato, and Francesco Tudisco. We will then overview the Kuramoto model, and its higher order generalizations, the Lohe Matrix model, and the Schrödinger-Lohe model of quantum synchronization. Results around the Schrödinger-Lohe model will be based off a joint work with Paolo Antonelli. > > Keywords: Classical and Quantum Synchronization, Stuart-Landau model, Kuramoto model, Lohe Matrix model, Schrödinger-Lohe model > > > > Atentamente, > > Ana P Millán > _______________________________________________ > Materia mailing list -- materia(a)onsager.ugr.es > To unsubscribe send an email to materia-leave(a)onsager.ugr.es

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QuThCo SEMINAR: An overview of Quantum contextuality and some related topics
by Michalis Skotiniotis 23 Apr '24

23 Apr '24

El grupo de Termodinámica y Computación Cuántica les invita al siguiente seminario Fecha: Viernes 26 de Abril Hora: 11:00 am Lugar: Laboratorio de Fïsica Computacional, Dept de Electromagnetismo y Física de al Materia, Planta Baja, Facultad de Ciencias (junto al péndulo gigante) Ponente: Giulio Camillo (Universidad de Granada) Titulo: An overview of quantum contextuality and some related topics Resumen: Contextuality can be seen as a purely non-classical phenomenon in physical systems, its quantum realizations being of special interest. We have been presencing an ongrowing attention to it in the recent years, from a proper experimental verification that led to a Nobel Prize to its roles on the foundational aspects of quantum theory and on the exploration of quantum versions of communication and computation schemes. In this seminar I am going to give an introduction to the phenomenon, in the traditional approach, and talk about its characterization and some of the associated challenges and applications, as well as connections to other areas, including quantum computing. El seminario es accesible para los estudiantes de grado, a los que recomendamos encarecidamente que asistan. Para aquellos que no puedan asistir, también hemos configurado una reunión de Google donde el seminario se transmitirá en vivo. meet.google.com/pfu-awyh-hmz También os recordamos a todos la página web del Seminario de Grupos, https://ic1.ugr.es/eventos/wp/qjc/ donde se publicarán anuncios pasados, presentes y futuros. Nos vemos a todos allí DJM ________________________________________________________________________________ Dear all The Quantum Thermodynamics and Computation group cordially invites you to the following seminar Date: Friday 26 of Arpil Time: 11:00 am Location: Computational Physics Laboratory, Department of Electromagnetism and Condensed Mater, Ground Floor, Faculty of Science (next to the giant pendulum) Speaker: Giulio Camillo (Universidad de Granada) Title: An overview of quantum contextuality and some related topics Abstract: Contextuality can be seen as a purely non-classical phenomenon in physical systems, its quantum realizations being of special interest. We have been presencing an ongrowing attention to it in the recent years, from a proper experimental verification that led to a Nobel Prize to its roles on the foundational aspects of quantum theory and on the exploration of quantum versions of communication and computation schemes. In this seminar I am going to give an introduction to the phenomenon, in the traditional approach, and talk about its characterization and some of the associated challenges and applications, as well as connections to other areas, including quantum computing. The seminar is (is not) accessible to undergraduate students, whom we strongly encourage to attend. For those of you unable to attend the seminar, we have set-up the following google meet link for the upcoming seminar. meet.google.com/pfu-awyh-hmz We would also like to bring to your attention the groups seminar page https://ic1.ugr.es/eventos/wp/qjc/ where you can find relevant material and information about past, present, and future seminars. See you all there DJM. --------------------------------------------------------- Dr. Michalis Skotiniotis Grupo de Termodinámica y Información Cuántica. Departamento de Electromagnetismo y Física de la Materia. Instituto Carlos I de Física Teórica y Computacional. Facultad de Ciencias, Av. Fuentenueva s/n Universidad de Granada Granada, 18071 Spain Email: mskotiniotis(a)onsager.ugr.es ---------------------------------------------------------

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