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Six-State Quantum Key Distribution Using Photons with Orbital Angular Momentum |
| LI Jun-Lin1**, WANG Chuan2 |
1Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics, Tsinghua University, Beijing 100084
2School of Science and Key Laboratory of Optical Communication and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876
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| Cite this article: |
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LI Jun-Lin, WANG Chuan 2010 Chin. Phys. Lett. 27 110303 |
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Abstract A new implementation of high-dimensional quantum key distribution (QKD) protocol is discussed. Using three mutual unbiased bases, we present a d−level six-state QKD protocol that exploits the orbital angular momentum with the spatial mode of the light beam. The protocol shows that the feature of a high capacity since keys are encoded using photon modes in d-level Hilbert space. The devices for state preparation and measurement are also discussed. This protocol has high security and the alignment of shared reference frames is not needed between sender and receiver.
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| Keywords:
03.67.Dd
03.67.Hk
03.67.-a
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Received: 06 September 2010
Published: 22 October 2010
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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03.67.-a
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(Quantum information)
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