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Sparrow Quantum has reported a deterministic photon source delivering over 500 million single photons per second into fiber, marking the highest single-photon flux to date. This breakthrough directly addresses the critical bottleneck of light generation in photonic quantum computing by maintaining high purity and indistinguishability without relying on spectral filtering that artificially inflates counts. By shifting the system limitation away from photon availability, this advancement enables more complex multi-photon experiments and practical quantum networking protocols.
Sparrow Quantum’s source sends half a billion photons per second
Sparrow Quantum’s deterministic photon source delivers more than 500 million single photons per second into a single-mode fiber, reported as the highest single-photon flux to date. Operating at 1 GHz, the source combines gigahertz repetition rate with more than 50% fiber efficiency, high single-photon purity, and two-photon indistinguishability.
Sparrow Quantum has achieved the highest single-photon flux reported to date, delivering more than 500 million single photons per second into a single-mode fiber. This advance addresses a longstanding bottleneck in photonic quantum computing, where a reliable supply of identical photons is important for both processing and networking. The deterministic source, developed with Ruhr-Universität Bochum, operates at…
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