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Proceedings Paper

Quantum key distribution using transverse spin wave-optical interactions
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Paper 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.

Paper Details

Date Published: 12 February 2011
PDF: 6 pages
Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 79481D (12 February 2011); doi: 10.1117/12.873159
Show Author Affiliations
Pradeep Kumar, Indian Institute of Technology Kanpur (India)
Anil Prabhakar, Indian Institute of Technology Madras (India)

Published in SPIE Proceedings Vol. 7948:
Advances in Photonics of Quantum Computing, Memory, and Communication IV
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori, Editor(s)

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