Proof-of-Concept of Real-World Quantum Key Distribution with Quantum Frames

Details Proof-of-Concept of Real-World Quantum Key Distribution with Quantum Frames Proof-of-Concept of Real-World Quantum Key Distribution with Quantum Frames

2009-01-06

arxiv.org/abs/0901.0612v2

New J. Phys. 11 (2009) 095001

Physics

Quantum Physics

25 pages, 14 figures, 4 tables

Scientific paper

10.1088/1367-2630/11/9/095001

We propose and experimentally investigate a fibre-based quantum key distribution system, which employs polarization qubits encoded into faint laser pulses. As a novel feature, it allows sending of classical framing information via sequences of strong laser pulses that precede the quantum data. This allows synchronization, sender and receiver identification, and compensation of time-varying birefringence in the communication channel. In addition, this method also provides a platform to communicate implementation specific information such as encoding and protocol in view of future optical quantum networks. Furthermore, we report on our current effort to develop high-rate error correction.

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