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18 papers · 1 filter
Towards AC-induced optimum control of dynamical localization
F. Revuelta, R. Chacón, F. Borondo
It is shown that optimum control of dynamical localization (quantum suppression of classical diffusion) in the context of ultracold atoms in periodically shaken optical lattices su…
Classical transients and the support of open quantum maps
Gabriel G. Carlo, D. A. Wisniacki, Leonardo Ermann +2
The basic ingredients in a semiclassical theory are the classical invariant objects serving as a support for the quantization. Recent studies, mainly obtained on quantum maps, have…
Entanglement, Particle Identity and the GNS Construction: A Unifying Approach
A. P. Balachandran, T. R. Govindarajan, Amilcar R. de Queiroz +1
A novel approach to entanglement, based on the Gelfand-Naimark-Segal (GNS) construction, is introduced. It considers states as well as algebras of observables on an equal footing.…
Quantumness of noisy quantum walks: a comparison between measurement-induced disturbance and quantum discord
Balaji R. Rao, R. Srikanth, C. M. Chandrashekar +1
Noisy quantum walks are studied from the perspective of comparing their quantumness as defined by two popular measures, measurement-induced disturbance (MID) and quantum discord (Q…
Parrondo's game using a discrete-time quantum walk
C. M. Chandrashekar, Subhashish Banerjee
We present a new form of a Parrondo game using discrete-time quantum walk on a line. The two players A and B with different quantum coins operators, individually losing the game ca…
Zeno subspace in quantum-walk dynamics
C. M. Chandrashekar
We investigate the discrete-time quantum walk evolution under the influence of the periodic measurements in position subspace. The undisturbed survival probability of the particle…