Search
Now showing items 1-10 of 13
Shortcuts to adiabatic rotation of a two-ion chain
(IOP, 2021-10)
We inverse engineer fast rotations of a transversally tight, linear trap with two ions for a predetermined rotation angle and time, avoiding final excitation. Different approaches are analyzed and compared when the ions ...
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 ...
Invariant-Based Inverse Engineering for Fast and Robust Load Transport in a Double Pendulum Bridge Crane
(MDPI, 2020-03-18)
We set a shortcut-to-adiabaticity strategy to design the trolley motion in a double-pendulum bridge crane. The trajectories found guarantee payload transport without residual excitation regardless of the initial conditions ...
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 Driving of a Particle in Two Dimensions without Final Excitation
(MDPI, 2022-11-19)
Controlling the motional state of a particle in a multidimensional space is key for fundamental science and quantum technologies. Applying a recently found two-dimensional invariant combined with linear invariants, we ...
Shortcut-to-Adiabaticity-Like Techniques for Parameter Estimation in Quantum Metrology
(MDPI, 2020-11-03)
Quantum metrology makes use of quantum mechanics to improve precision measurements and measurement sensitivities. It is usually formulated for time-independent Hamiltonians, but time-dependent Hamiltonians may offer ...
Noise Sensitivities for an Atom Shuttled by a Moving Optical Lattice via Shortcuts to Adiabaticity
(MDPI, 2020-02-25)
We find the noise sensitivities (i.e., the quadratic terms of the energy with respect to the perturbation of the noise) of a particle shuttled by an optical lattice that moves according to a shortcut-to-adiabaticity transport ...
Invariant-based inverse engineering of time-dependent, coupled harmonic oscillators
(American Physical Society, 2020-12-14)
Two-dimensional (2D) systems with time-dependent controls admit a quadratic Hamiltonian modeling near potential minima. Independent, dynamical normal modes facilitate inverse Hamiltonian engineering to control the system ...
Interferometer for force measurement via a shortcut to adiabatic arm guiding
(American Physical Society, 2020-06-12)
We propose a compact atom interferometer to measure homogeneous constant forces guiding the arms via shortcuts to adiabatic paths. For a given sensitivity, which only depends on the space-time area of the guiding paths, ...