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Proceedings Paper

Quantum computation with linear optics
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Paper Abstract

Ever since Knill, Laflamme and Milburn [Nature (London) 409, 46 (2001)] showed that nondeterministic quantum logic operations could be performed with linear optical elements, additional photons (ancilla) and projective measurements, the idea of linear-optics quantum computation has attracted considerable interest. Our group has recently demonstrated several devices of this kind. We give an overview of recent experimental results, including the quantum parity check, the destructive controlled-NOT, and a cyclical quantum memory. The need for high-efficiency detection of single photons, and for detectors capable of distinguishing photon number will be discussed. Some experimental improvements towards meeting that need will be presented.

Paper Details

Date Published: 4 August 2003
PDF: 7 pages
Proc. SPIE 5105, Quantum Information and Computation, (4 August 2003); doi: 10.1117/12.488527
Show Author Affiliations
Michael J. Fitch, Johns Hopkins Univ. (United States)
Michelle M. Donegan, Johns Hopkins Univ. (United States)
Bryan Charles Jacobs, Johns Hopkins Univ. (United States)
Todd B. Pittman, Johns Hopkins Univ. (United States)
James D. Franson, Johns Hopkins Univ. (United States)

Published in SPIE Proceedings Vol. 5105:
Quantum Information and Computation
Eric Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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