[Todos] HOY: Coloquios DF - Ferdinand Schmidt-Kaler. 14hs, Aula Seminario, 2do piso, Pab. I

[Augusto Roncaglia]

COLOQUIOS DEL DEPARTAMENTO DE FÍSICA EXACTAS - UBA

              En el Aula Seminario, 2do piso, Pab. I,

              Jueves 1/11, 14hs:

              Ferdinand Schmidt-Kaler

              QUANTUM, Institut für Physik, Univ. Mainz, Deutschland


*Quantum computing with trapped ions and its connection to quantum heat
engines*

Trapped single ions and ion crystal exhibit excellent control of the
internal spin– and the external motional-degree of freedom. Multi-particle
quantum entangled states are generated with high fidelity in view of a
future quantum processor: Following a scalable approach with ion crystals
shuttled in a micro segmented trap we control multi-ion qubit register,
obtain long coherence time and demonstrate high fidelity entanglement of s
few qubits [1]. However, the model system of a trapped ion crystal may be
employed for quantum thermodynamic studies, namely a dynamically driven
open quantum system. Initially, we operate a single ion engine and realize
four-stroke Otto cycle, thus converting heat into mechanical coherent
motion [2]. More recently, we explore spin-dependent light forces [3] for
operating a single ion heat engine fully in the quantum regime [4] of
motion. I will discuss plans for heat engines with ion crystals.

[1] Bermudez et al, PRX 7, 041061 (2017); Kaufmann et al, PRL 119, 150503
(2017).
[2] Roßnagel, et al., Science 352, 325 (2016).
[3] Schmiegelow et al, PRL 116, 033002 (2016).
[4] von Lindenfels et al, arXiv:1808.02390.
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://mailman.df.uba.ar/pipermail/todos/attachments/20181101/1c9af7b3/attachment.html>