Improving noise threshold for optical quantum computing with the EPR photon source

Abstract

We show that the noise threshold for optical quantum computing can be significantly improved by using the EPR-type of photon source. In this implementation, the detector efficiency ${\eta }_d$ is required to be larger than 50%, and the source efficiency ${\eta }_s$ can be an arbitrarily small positive number. This threshold compares favorably with the implementation using the single-photon source, where one requires the combined efficiency ${\eta }_d{\eta }_s>2/3$. We discuss several physical setups for realization of the required EPR photon source, including the photon emitter from a single-atom cavity.

4 pages, 2 figures

References in corpus (5)

• The Quantum Internet
• Resource-efficient linear optical quantum computation
• How good must single photon sources and detectors be for efficient linear optical quantum computation?
• Photon-Photon Entanglement with a Single Trapped Atom
• Scalable Generation of Graph-State Entanglement through Realistic Linear Optics

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