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Proceedings Paper

Orthogonal and polarization-entangled photon-pair arrangement for decoherence-free quantum measurement
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Paper Abstract

A theoretical model is presented for the interaction of a quantum system with an orthogonal polarized entangled photon-pair measurement probe. The theoretical framework is based on solving the generalized Jaynes-Cummings and Shroeder's equations to determine the phase evolution of the interacting system. The measurement-induced decoherence is expressed in terms of the temporal evolution of the relative phases of the superposition states induced by the measurement probe. The method is applied to determine the rate of decoherence of a two-qubit rubidium quantum system. Quantitative results are given to contrast measurement-induced of (i) single photon probe and (ii) orthogonal polarized and entangled probe.

Paper Details

Date Published: 24 August 2004
PDF: 5 pages
Proc. SPIE 5436, Quantum Information and Computation II, (24 August 2004); doi: 10.1117/12.542936
Show Author Affiliations
Patrick Dzifanu Kumavor, Univ. of Connecticut (United States)
Eric Donkor, Univ. of Connecticut (United States)
Bing Wang, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 5436:
Quantum Information and Computation II
Eric Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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