Search
Now showing items 1-10 of 14
Energy Consumption for Ion-Transport in a Segmented Paul Trap
(IOP Publishing LTD, 2018-06-12)
There is recent interest in determining energy costs of shortcuts to adiabaticity (STA), but different definitions of ' cost' have been used. Wedemonstrate the importance of taking into account the control system (CS) for ...
Symmetries and Invariants for Non-Hermitian Hamiltonians
(MDPI, 2018-07)
We discuss Hamiltonian symmetries and invariants for quantum systems driven by non-Hermitian Hamiltonians. For time-independent Hermitian Hamiltonians, a unitary or antiunitary transformation AHA that leaves the Hamiltonian ...
Optimally robust shortcuts to population inversion in two-level quantum systems
(IOP Publishing LTD, 2012-09-21)
We examine the stability versus different types of perturbations of recently proposed shortcuts to adiabaticity to speed up the population inversion of a two-level quantum system. We find the optimally robust processes by ...
Fast quasiadiabatic dynamics
(2015-10-07)
We work out the theory and applications of a fast quasiadiabatic approach to speed up slow adiabatic manipulations of quantum systems by driving a control parameter as near to the adiabatic limit as possible over the entire ...
Fast driving between arbitrary states of a quantum particle by trap deformation
(2016-12-22)
By performing a slow adiabatic change between two traps of a quantum particle, it is possible to transform an eigenstate of the original trap into the corresponding eigenstate of the final trap. If no level crossings are ...
Fast state and trap rotation of a particle in an anisotropic potential
(IOP Publishing, 2019-10-21)
We study the dynamics of a quantum or classical particle in a two-dimensional rotating anisotropic harmonic potential. By a sequence of symplectic transformations for constant rotation velocity we find uncoupled normal ...
Fast atom transport and launching in a nonrigid trap
(Springer Nature, 2017-07-18)
We study the shuttling of an atom in a trap with controllable position and frequency. Using invariant-based inverse engineering, protocols in which the trap is simultaneously displaced and expanded are proposed to speed ...
Energy consumption for shortcuts to adiabaticity
(APS, 2017-08-25)
Shortcuts to adiabaticity let a system reach the results of a slow adiabatic process in a shorter time. We propose to quantify the “energy cost” of the shortcut by the energy consumption of the system enlarged by including ...
Compact and high conversion efficiency mode-sorting asymmetric Y junction using shortcuts to adiabaticity
(Optica, 2014-04-08)
We propose a compact and high conversion efficiency asymmetric Y junction mode multiplexer/demultiplexer for applications in on-chip mode-division multiplexing. Traditionally, mode sorting is achieved by adiabatically ...
Interferometer with a driven trapped ion
(2018-10-18)
We propose an interferometric measurement of weak forces using a single ion subjected to designed time-dependent spin-dependent forces. Explicit expressions of the relation between the unknown force and the final populations ...