Imperfect linear-optical photonic gates with number-resolving photodetection

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.032341· OSTI ID:22068685

Smith, A Matthew ^[1]; Uskov, D B ^[1]; Ying, L H; Kaplan, L ^[1]

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1. Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118 (United States)

We use the numerical optimization techniques of Uskov et al.[Phys. Rev. A 81, 012303 (2010)] to investigate the behavior of the success rates for Knill-Laflamme-Milburn-style [Knill et al., Nature (London) 409, 46 (2001)] two- and three-qubit entangling gates. The methods are first demonstrated at perfect fidelity and then extended to imperfect gates. We find that as the perfect fidelity condition is relaxed, the maximum attainable success rates increase in a predictable fashion depending on the size of the system, and we compare that rate of increase for several gates.

• OSTI ID: 22068685
• Journal Information: Physical Review. A, Vol. 84, Issue 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
OPTIMIZATION
PHOTODETECTORS
PHOTONS
QUANTUM ENTANGLEMENT
QUBITS