Efficiency limits for linear optical processing of single photons and single-rail qubits

Dominic W. Berry; A. I. Lvovsky; Barry C. Sanders

doi:10.1364/JOSAB.24.000189

Efficiency limits for linear optical processing of single photons and single-rail qubits

Dominic W. Berry^*, A. I. Lvovsky, Barry C. Sanders

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We analyze the problem of increasing the efficiency of single-photon sources or single-rail photonic qubits via linear optical processing and destructive conditional measurements. We allow for the use of coherent states and do not limit to photon-counting measurements. We conjecture that, with the limitation that multiphoton components in the output are not permitted, it is not possible to increase the efficiency. We prove this conjecture for several important special cases, and provide extensive numerical results for the general case.

Original language	English
Pages (from-to)	189-197
Number of pages	9
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	24
Issue number	2
DOIs	https://doi.org/10.1364/JOSAB.24.000189
Publication status	Published - 2007
Externally published	Yes

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10.1364/JOSAB.24.000189

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abstract = "We analyze the problem of increasing the efficiency of single-photon sources or single-rail photonic qubits via linear optical processing and destructive conditional measurements. We allow for the use of coherent states and do not limit to photon-counting measurements. We conjecture that, with the limitation that multiphoton components in the output are not permitted, it is not possible to increase the efficiency. We prove this conjecture for several important special cases, and provide extensive numerical results for the general case.",

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AU - Sanders, Barry C.

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AB - We analyze the problem of increasing the efficiency of single-photon sources or single-rail photonic qubits via linear optical processing and destructive conditional measurements. We allow for the use of coherent states and do not limit to photon-counting measurements. We conjecture that, with the limitation that multiphoton components in the output are not permitted, it is not possible to increase the efficiency. We prove this conjecture for several important special cases, and provide extensive numerical results for the general case.

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JO - Journal of the Optical Society of America B: Optical Physics

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Efficiency limits for linear optical processing of single photons and single-rail qubits

Abstract

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