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Now showing items 11-14 of 14
Shortcuts to adiabaticity in three-level systems using Lie transforms
(APS, 2014-05-07)
Sped-up protocols that drive a system quickly to the same populations that can be reached by a slow adiabatic process may involve Hamiltonian terms which are difficult to realize. We use the dynamical symmetry of the ...
Vanishing efficiency of speeded-up quantum Otto engines
(IOP, 2019-08-28)
We assess the energy cost of shortcuts to adiabatic expansions or compressions of a harmonic oscillator, the power strokes of a quantum Otto engine. Difficulties to identify the cost stem from the interplay between different ...
Shortcuts to adiabaticity: concepts, methods, and applications
(2019-10-24)
Shortcuts to adiabaticity (STA) are fast routes to the final results of slow, adiabatic changes of the controlling parameters of a system. The shortcuts are designed by a set of analytical and numerical methods suitable ...
Shortcuts to adiabaticity in optical waveguides using fast quasiadiabatic dynamics
(Optica Publishing Group, 2017-01-03)
We propose a fast quasiadiabatic approach to the design of optical waveguide devices. This approach distributes the system adiabaticity homogeneously over the device length, thus providing a shortcut to adiabaticity at a ...