Optimal quantum channel estimation of two interacting qubits subject to decoherence

We investigate the estimation of the quantum channel parameter for a two-qubit system with each qubit independently interacting with its Markovian environment. The dynamics of quantum Fisher information in this system is studied and employed as a measure to quantify the precision of the estimation....

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Vydáno v:	The European physical journal. D, Atomic, molecular, and optical physics Ročník 68; číslo 6
Hlavní autoři:	Zheng, Qiang, Yao, Yao, Li, Yong
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Berlin/Heidelberg Springer Berlin Heidelberg 01.06.2014 EDP Sciences
Témata:	Applications of Nonlinear Dynamics and Chaos Theory Atomic Classical and quantum physics: mechanics and fields Exact sciences and technology Foundations, theory of measurement, miscellaneous theories (including aharonov-bohm effect, bell inequalities, berry's phase) Molecular Optical and Plasma Physics Physical Chemistry Physics Physics and Astronomy Quantum information Quantum Information Technology Quantum mechanics Quantum Physics Regular Article Spectroscopy/Spectrometry Spintronics Quantum Information Quantum decoherence Quantum information Quantum entanglement Quantum bit Fisher information
ISSN:	1434-6060, 1434-6079
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