Linear optical quantum computation with imperfect entangled photon-pair sources and inefficient non-photon-number-resolving detectors
Journal Article
·
· Physical Review. A
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093 (China)
- Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026 (China)
- Centre for Quantum Computer Technology and Physics Department, University of Queensland, Queensland 4072, Brisbane (Australia)
We propose a scheme for efficient cluster state quantum computation by using imperfect polarization-entangled photon-pair sources, linear optical elements, and inefficient non-photon-number-resolving detectors. The efficiency threshold for loss tolerance in our scheme requires the product of source and detector efficiencies should be >1/2, the best known figure. This figure applies to uncorrelated loss. We further find that the loss threshold is unaffected by correlated loss in the photon pair source. Our approach sheds new light on efficient linear optical quantum computation with imperfect experimental conditions.
- OSTI ID:
- 21408782
- Journal Information:
- Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052303; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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