Peter P Rohde 2005 J. Opt. B: Quantum Semiclass. Opt. 7 82 doi:10.1088/1464-4266/7/2/008
Peter P Rohde
Show affiliationsWe present a scheme for non-deterministically approximating photon number resolving detectors using non-discriminating detectors. The model is simple in construction and employs very few physical resources. Despite its non-determinism, the proposal may nonetheless be suitable for use in some quantum optics experiments in which non-determinism can be tolerated. We analyse the detection scheme in the context of an optical implementation of the controlled-NOT gate, an inherently non-deterministic device. This allows the gate's success probability to be traded away for improved gate fidelity, assuming high efficiency detectors. The scheme is compared to two other proposals, both deterministic, for approximating discriminating detectors using non-discriminating detectors: the cascade and time division multiplexing schemes.
03.67.Lx Quantum computation architectures and implementations
85.60.Gz Photodetectors (including infrared and CCD detectors)
Issue 2 (February 2005)
Received 16 November 2004, accepted for publication 21 January 2005
Published 28 January 2005
Peter P Rohde 2005 J. Opt. B: Quantum Semiclass. Opt. 7 82
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