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Frequency and temporal effects in linear optical quantum computing

2005; American Physical Society; Volume: 71; Issue: 3 Linguagem: Inglês

10.1103/physreva.71.032320

1538-4446

Peter P. Rohde, Timothy C. Ralph,

Optical Network Technologies

Typically linear optical quantum computing (LOQC) models assume that all input photons are completely indistinguishable. In practice there will inevitably be nonidealities associated with the photons and the experimental setup which will introduce a degree of distinguishability between photons. We consider a nondeterministic optical controlled-NOT gate, a fundamental LOQC gate, and examine the effect of temporal and spectral distinguishability on its operation. We also consider the effect of utilizing nonideal photon counters, which have finite bandwidth and time response.