What question did this study set out to answer?

To achieve high-speed quantum key distribution over an open-air link using high-rate classical clock synchronization.

January 1, 2004Optics ExpressOpen Access

Quantum key distribution with 1.25 Gbps clock synchronization

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Authors

JBJoshua C. BienfangNational Institute of Standards and Technology AGAndrew J. GrossCentre National de la Recherche Scientifique AMAlan MinkNational Institute of Standards and Technology

Discussion

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Implication

Experimental demonstration shows 1.0 Mbps quantum key distribution across a free-space optical link, suggesting classical clock synchronization significantly accelerates secure key rates.

Key Points

To achieve high-speed quantum key distribution over an open-air link using high-rate classical clock synchronization.
Operated a 730-meter free-space link using a 1550 nm classical optical channel running in parallel with an 845 nm quantum channel.
Implemented clock recovery techniques on the classical channel at 1.25 Gbps to synchronize the quantum transmitter and receiver.
Recorded photon arrivals using silicon avalanche photodiode detectors to evaluate transmission limits.
Achieved sifted quantum cryptographic key generation rates up to 1.0 Mbps over a 730-meter free-space optical link, exceeding prior reported benchmarks by two orders of magnitude.
Demonstrated that the overall transmission speed was primarily constrained by the timing jitter of the silicon avalanche photodiode detectors rather than the synchronization channel.

Cite This Study

Bienfang et al. (2004) studied this question.

synapsesocial.com/papers/6a6f666cb27f15817826f64d https://doi.org/10.1364/opex.12.002011

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January 1, 2004Optics ExpressOpen Access

Quantum key distribution with 1.25 Gbps clock synchronization

View Full Paper

Ask AI

Bookmark

Authors

JBJoshua C. BienfangNational Institute of Standards and Technology AGAndrew J. GrossCentre National de la Recherche Scientifique AMAlan MinkNational Institute of Standards and Technology

Discussion

Member takes

Implication

Experimental demonstration shows 1.0 Mbps quantum key distribution across a free-space optical link, suggesting classical clock synchronization significantly accelerates secure key rates.

Key Points

To achieve high-speed quantum key distribution over an open-air link using high-rate classical clock synchronization.
Operated a 730-meter free-space link using a 1550 nm classical optical channel running in parallel with an 845 nm quantum channel.
Implemented clock recovery techniques on the classical channel at 1.25 Gbps to synchronize the quantum transmitter and receiver.
Recorded photon arrivals using silicon avalanche photodiode detectors to evaluate transmission limits.
Achieved sifted quantum cryptographic key generation rates up to 1.0 Mbps over a 730-meter free-space optical link, exceeding prior reported benchmarks by two orders of magnitude.
Demonstrated that the overall transmission speed was primarily constrained by the timing jitter of the silicon avalanche photodiode detectors rather than the synchronization channel.

Cite This Study

Bienfang et al. (2004) studied this question.

synapsesocial.com/papers/6a6f666cb27f15817826f64d https://doi.org/10.1364/opex.12.002011

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