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 (17)

• The Quantum Internet
• Long-distance quantum communication with atomic ensembles and linear optics
• Review article: Linear optical quantum computing
• Scalable photonic quantum computation through cavity-assisted interaction
• Resource-efficient linear optical quantum computation
• Efficient high-fidelity quantum computation using matter qubits and linear optics
• Optical quantum computation using cluster states
• Efficient engineering of multi-atom entanglement through single-photon detections
• How good must single photon sources and detectors be for efficient linear optical quantum computation?
• Entanglement of a photon and a collective atomic excitation
• Loss tolerance in one-way quantum computation via counterfactual error correction
• Efficient quantum computation with probabilistic quantum gates
• Deterministic linear optics quantum computation utilizing linked photon circuits
• Noise thresholds for optical quantum computers
• Photon-Photon Entanglement with a Single Trapped Atom
• Scalable Generation of Graph-State Entanglement through Realistic Linear Optics
• Imperfect Detectors in Linear Optical Quantum Computers

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