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19932026
Showing 2007 · quant-phShow all

30 papers · 2 filters

quant-ph2007★ 6 cited

Quantum state decorrelation

Giacomo M. D'Ariano, Rafal Demkowicz-Dobrzanski, Paolo Perinotti +1

We address the general problem of removing correlations from quantum states while preserving local quantum information as much as possible. We provide a complete solution in the ca…

quant-ph2007★ 9 cited

Entanglement of distant flux qubits mediated by non-classical electromagnetic field

E. Zipper, M. Kurpas, J. Dajka +1

The mechanism for entanglement of two flux qubits each interacting with a single mode electromagnetic field is discussed. By performing a Bell state measurements (BSM) on photons w…

quant-ph2007★ 23 cited

A class of positive atomic maps

Dariusz Chruscinski, Andrzej Kossakowski

We construct a new class of positive indecomposable maps in the algebra of `d x d' complex matrices. These maps are characterized by the `weakest' positivity property and for this…

quant-ph2007★ 85 cited

Concurrence and a proper monogamy inequality for arbitrary quantum states

Yong-Cheng Ou, Heng Fan, Shao-Ming Fei

We obtain an analytical lower bound of entanglement quantified by concurrence for arbitrary bipartite quantum states. It is shown that our bound is tight for some mixed states and…

quant-ph2007★ 56 cited

Cavity-QED with cold atoms trapped in a double-well potential

Jiang-Ming Zhang, Wu-Ming Liu, Duan-Lu Zhou

We investigate the interplay dynamics of a cavity qed system, where the two-level atoms are trapped in a double-well potential, and the cavity mode, with a frequency largely detune…

quant-ph2007★ 57 cited

High photo-excited carrier multiplication by charged InAs dots in AlAs/GaAs/AlAs resonant tunneling diode

Wangping Wang, Ying Hou, Dayuan Xiong +2

We present an approach for the highly sensitive photon detection based on the quantum dots (QDs) operating at temperature of 77K. The detection structure is based on an AlAs/GaAs/A…