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@onsager.ugr.es ---------------------------------------------------------