Using entanglement in photonic qubit measurements

G. J. Pryde; J. L. O'Brien; A. G. White; T. C. Ralph; S. D. Bartlett; H. M. Wiseman

doi:10.1117/12.616166

12 September 2005 Using entanglement in photonic qubit measurements

G. J. Pryde, J. L. O'Brien, A. G. White, T. C. Ralph, S. D. Bartlett, H. M. Wiseman

Proceedings Volume 5893, Quantum Communications and Quantum Imaging III; 58930Y (2005) https://doi.org/10.1117/12.616166
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download Citation

G. J. Pryde, J. L. O'Brien, A. G. White, T. C. Ralph, S. D. Bartlett, and H. M. Wiseman "Using entanglement in photonic qubit measurements", Proc. SPIE 5893, Quantum Communications and Quantum Imaging III, 58930Y (12 September 2005); https://doi.org/10.1117/12.616166

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