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Proceedings Paper

Using entanglement in photonic qubit measurements
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Paper Abstract

Two-qubit entangling gates allow the realization of new types of generalized quantum measurement. We discuss, and use photonic systems to demonstrate, two instances of this: two-qubit entangling measurements realizing superior discrimination of locally prepared two-qubit quantum states relative to what is achievable with local measurements and classical communication; and nondestructive weak measurements with postselection, leading to quantum weak values.

Paper Details

Date Published: 12 September 2005
PDF: 12 pages
Proc. SPIE 5893, Quantum Communications and Quantum Imaging III, 58930Y (12 September 2005); doi: 10.1117/12.616166
Show Author Affiliations
G. J. Pryde, The Univ. of Queensland (Australia)
J. L. O'Brien, The Univ. of Queensland (Australia)
A. G. White, The Univ. of Queensland (Australia)
T. C. Ralph, The Univ. of Queensland (Australia)
S. D. Bartlett, The Univ. of Queensland (Australia)
The Univ. of Sydney (Australia)
H. M. Wiseman, Griffith Univ. (Australia)

Published in SPIE Proceedings Vol. 5893:
Quantum Communications and Quantum Imaging III
Ronald E. Meyers; Yanhua Shih, Editor(s)

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