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Proceedings Paper

Non-destructive quantum measurement scheme for quantum states in superposition
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Paper Abstract

The measurement of discrete quantum systems is a vital ingredient for quantum information processors. These systems, being fragile in nature, are characterized by a perturbation or collapse of their states whenever they are measured due to measurement-induced decoherence. We propose a quantum measurement model that allows for the extraction of information from any superposed quantum system without inducing a total collapse. The methodology used involves the coupling of a quantum probe through suitable interactions that create a partial entanglement between probe and quantum system. This entanglement in turn transfers information about the quantum system to the probe. Therefore, by making measurements on the probe rather than the superposed quantum system itself, we avert a total collapse to the quantum system.

Paper Details

Date Published: 24 March 2008
PDF: 9 pages
Proc. SPIE 6976, Quantum Information and Computation VI, 69760B (24 March 2008); doi: 10.1117/12.779456
Show Author Affiliations
Patrick Kumavor, Univ. of Connecticut (United States)
Eric Donkor, Univ. of Connecticut (United States)

Published in SPIE Proceedings Vol. 6976:
Quantum Information and Computation VI
Eric J. Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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