Shortcuts to adiabaticity in quantum devices

Adolfo del Campo

Los Álamos National Laboratory, Theoretical Division

“Fast good” is a new culinary concept envisioned by the chef F. Ad- rià aimed at creating a diet enjoying of two apparently mutually-ex- clusive features: fast-service and high-quality. When similar ideas are invoked in the quantum realm, one faces the adiabatic theorem which imposes a price. The preparation of a given target state with high-fidelity, free from spurious excitations, generally demands a long time of evolution and the implementation of an adiabatic dy- namics. In this talk, I will present recent theoretical advances and experimental progress in the design of shortcuts to adiabaticity in quantum systems by a variety of complementary approaches, such as the use of adiabatic invariants, inversion of dynamical scaling laws, the transitionless quantum driving algorithm, and inhomogen- eous quenches (time-permitting). These methods will be applied to the control of ultracold gases and trapped ions, with special em- phasis in many-body aspects. In particular, a proposal to realize a quantum dynamical microscope will be discussed.

Date: 20 Diciembre 2011

Time: 14:30 h

Place: 3rd floor seminar lecture room. Dpto. Física Teórica I. Facultad de Ciencias Físicas UCM