Measuring the entanglement of coupled spins by multiphoton interference

Michael N Leuenberger; Michael E Flatte; D. D Awschalom

doi:10.48550/arxiv.cond-mat/0307657

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Measuring the entanglement of coupled spins by multiphoton interference

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Measuring the entanglement of coupled spins by multiphoton interference

Michael N Leuenberger, Michael E Flatte and D. D Awschalom

07/25/2003

DOI: 10.48550/arxiv.cond-mat/0307657

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Abstract

We propose an experimental method to measure the entanglement of coupled spins, each in a separate quantum dot, by means of multiphoton interference patterns generated through the scattering of two laser beams off the quantum dots. We calculate the N-photon quantum correlations measured by N detectors on an image plane. Using two perpendicular laser beams, either many correlation measurements on a time ensemble or a single correlation measurement on a spatial ensemble of the many-qubit state is sufficient to retrieve all the possible amplitudes of a many-qubit state.

Physics - Mesoscale and Nanoscale Physics

Details

Title: Subtitle: Measuring the entanglement of coupled spins by multiphoton interference
Creators: Michael N Leuenberger
Michael E Flatte
D. D Awschalom
Resource Type: Preprint
DOI: 10.48550/arxiv.cond-mat/0307657
Language: English
Date posted: 07/25/2003
Academic Unit: Electrical and Computer Engineering; Physics and Astronomy
Record Identifier: 9984442013202771

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