Improved anharmonic trap expansion through enhanced shortcuts to adiabaticity

Classical and Quantum Shortcuts to Adiabaticity for Scale-Invariant Driving

Sebastian Deffner, Christopher Jarzynski, and Adolfo del Campo Department of Chemistry and Biochemistry and Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742, USA Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA ...

Scaling-Up Quantum Heat Engines Efficiently via Shortcuts to Adiabaticity

The finite-time operation of a quantum heat engine that uses a single particle as a working medium generally increases the output power at the expense of inducing friction that lowers the cycle efficiency. We propose to scale up a quantum heat engine utilizing a many-particle working medium in combination with the use of shortcuts to adiabaticity to boost the nonadiabatic performance by elimina...

Shortcuts to adiabaticity in a time-dependent box

A method is proposed to drive an ultrafast non-adiabatic dynamics of an ultracold gas trapped in a time-dependent box potential. The resulting state is free from spurious excitations associated with the breakdown of adiabaticity, and preserves the quantum correlations of the initial state up to a scaling factor. The process relies on the existence of an adiabatic invariant and the inversion of ...

Erratum: Non-equilibrium scale invariance and shortcuts to adiabaticity in a one-dimensional Bose gas

Non-equilibrium scale invariance and shortcuts to adiabaticity in a one-dimensional Bose gas

We present experimental evidence for scale invariant behaviour of the excitation spectrum in phase-fluctuating quasi-1d Bose gases after a rapid change of the external trapping potential. Probing density correlations in free expansion, we find that the temperature of an initial thermal state scales with the spatial extension of the cloud as predicted by a model based on adiabatic rescaling of i...