Results 21 to 30 of about 1,109 (45)
Sudden death and sudden birth of entanglement in common structured reservoirs [PDF]
, 2008 We study the exact entanglement dynamics of two qubits in a common structured reservoir. We demonstrate that, for certain classes of entangled states, entanglement sudden death occurs, while for certain initially factorized states, entanglement sudden ...
B. M. Garraway +8 more
core +2 more sources
Entanglement Efficiencies in PT-Symmetric Quantum Mechanics
, 2012 The degree of entanglement is determined for an arbitrary state of a broad class of PT-symmetric bipartite composite systems. Subsequently we quantify the rate with which entangled states are generated and show that this rate can be characterized by a ...
A. Einstein +15 more
core +1 more source
Optimal distillation of three-qubit W states
, 2010 Some of the asymmetric three qubit $W$ states are used for perfect teleportation, superdense coding and quantum information splitting. We present the protocols for the optimal distillation of the asymmetric as well as the symmetric $W$ states from a ...
Yildiz, Ali
core +1 more source
Angular Schmidt Modes in Spontaneous Parametric Down-Conversion
, 2011 We report a proof-of-principle experiment demonstrating that appropriately chosen set of Hermite-Gaussian modes constitutes a Schmidt decomposition for transverse momentum states of biphotons generated in the process of spontaneous parametric down ...
A. A. Kalinkin +7 more
core +1 more source
Random unitary dynamics of quantum networks
, 2009 We investigate the asymptotic dynamics of quantum networks under repeated applications of random unitary operations. It is shown that in the asymptotic limit of large numbers of iterations this dynamics is generally governed by a typically low ...
Alber, G., Jex, I., Novotny, J.
core +1 more source
Quasi-Bell inequalities from symmetrized products of noncommuting qubit observables
, 2017 Noncommuting observables cannot be simultaneously measured, however, under local hidden variable models, they must simultaneously hold premeasurement values, implying the existence of a joint probability distribution.
Fleming, Graham R., Gamel, Omar E.
core +1 more source
Constructive role of dissipation for driven coupled bosonic modes [PDF]
, 2013 We theoretically investigate a system of two coupled bosonic modes subject to both dissipation and external driving. We show that in the steady state the degree of entanglement between the coupled bosonic modes can be enhanced by dissipation.
Andersson, Erika +3 more
core +2 more sources
Detecting entanglement of two electron spin qubits with witness operators
, 2011 We propose a scheme for detecting entanglement between two electron spin qubits in a double quantum dot using an entanglement witness operator. We first calculate the optimal configuration of the two electron spins, defined as the position in the energy ...
A. Borras +3 more
core +2 more sources
Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation [PDF]
, 2014 Applying a magnetic-field gradient to a trapped ion allows long-wavelength radiation to produce a mechanical force on the ion's motion when internal transitions are driven.
Hensinger, W K +5 more
core +2 more sources
Generation of mesoscopic entangled states in a cavity coupled to an atomic ensemble
, 2012 We propose a novel scheme for the efficient production of "NOON states" based on the resonant interaction of a pair of quantized cavity modes with an ensemble of atoms.
Hartmann, Michael J. +2 more
core +1 more source