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17 papers · 2 filters
Quantum and classical correlations in the one-dimensional XY model with Dzyaloshinskii-Moriya interaction
Ben-Qiong Liu, Bin Shao, Jun-Gang Li +2
We study the effect of Dzyaloshinskii-Moriya (DM) interaction on pairwise quantum discord, entanglement, and classical correlation in the anisotropic XY spin-half chain. Analytical…
Decoherence in a quantum harmonic oscillator monitored by a Bose-Einstein condensate
S. Brouard, D. Alonso, D. Sokolovski
We investigate the dynamics of a quantum oscillator, whose evolution is monitored by a Bose-Einstein condensate (BEC) trapped in a symmetric double well potential. It is demonstrat…
Zeno effect and ergodicity in finite-time quantum measurements
D. Sokolovski
We demonstrate that an attempt to measure a non-local in time quantity, such as the time average $\la A\ra_T$ of a dynamical variable , by separating Feynman paths into ever nar…
Operational Entanglement Families of Symmetric Mixed N-Qubit States
T. Bastin, P. Mathonet, E. Solano
We introduce an operational entanglement classification of symmetric mixed states for an arbitrary number of qubits based on stochastic local operations assisted with classical com…
Atomic Fock states by gradual trap reduction: from sudden to adiabatic limits
D. Sokolovski, M. Pons, A. del Campo +1
We investigate the possibility to form high fidelity atomic Fock states by gradual reduction of a quasi one dimensional trap containing spin polarized fermions or strongly interact…
Timescales of tunneling decay of a localized state
Yue Ban, E. Ya. Sherman, J. G. Muga +1
Motivated by recent time domain experiments on ultrafast atom ionization, we analyze the transients and timescales that characterize, besides the relatively long lifetime, the deca…