Quantum key distribution using transverse spin wave-optical interactions

Pradeep Kumar; Anil Prabhakar

doi:10.1117/12.873159

12 February 2011 Quantum key distribution using transverse spin wave-optical interactions

Pradeep Kumar, Anil Prabhakar

Proceedings Volume 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV; 79481D (2011) https://doi.org/10.1117/12.873159
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

We describe a frequency-coded scheme to implement the BB84 quantum key distribution protocol using spin wave (SW)-optical interactions. The interaction of SWs with optical coherent states allows TE↔TM mode conversion with simultaneous change of frequency and polarization while introducing a phase difference between the two modes. To implement the BB84 protocol, key bits are encoded as relative phases between the TE and TM modes. The proposed scheme offers a higher key rate, due to a modulation frequency as high as 25 GHz, which also relaxes the specifications on the optical filter at the receiver. In addition, SW-optical interactions yield the added security of truly single-sideband modulation.

Citation Download Citation

Pradeep Kumar and Anil Prabhakar "Quantum key distribution using transverse spin wave-optical interactions", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 79481D (12 February 2011); https://doi.org/10.1117/12.873159

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