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Quantum key distribution using spin wave-optical interactions
Published in
2010
Volume: 46
   
Issue: 11
Pages: 1542 - 1548
Abstract
We propose the use of spin wave-optical interactions to implement the BB84 and B92 quantum key distribution (QKD) protocols. Spin waves couple the transverse magnetic (TM) and transverse electric (TE) optical modes of a waveguide. We derive the interaction Hamiltonian to describe the coupling, and solve the resulting equations to determine the time evolution of quantized TM and TE modes. With a judicious choice of coupling coefficient, a set of four nonorthogonal states-formally equivalent to the set of polarization states of a single photon-can be generated. These states form a conjugate basis suitable as a QKD basis set. The proposed scheme can mitigate any medium-induced polarization fluctuations. The spin wave-optical interactions can be used to implement the BB84 protocol using frequency-coded coherent optical states. © 2010 IEEE.
About the journal
JournalIEEE Journal of Quantum Electronics
ISSN00189197
Open AccessNo
Concepts (27)
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    Basis sets
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    BB84
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    BB84 PROTOCOL
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    CONJUGATE BASIS
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    Coupling coefficient
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    INDEX TERMS
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    INDUCED POLARIZATION
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    MAGNETOSTATIC WAVES
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    NONORTHOGONAL STATE
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    OPTICAL INTERACTIONS
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    OPTICAL MODES
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    Optical state
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    Polarization state
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    Quantum key distribution
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    QUANTUM KEY DISTRIBUTION PROTOCOLS
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    SINGLE PHOTONS
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    TE MODE
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    Time evolutions
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    TRANSVERSE ELECTRICS
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    TRANSVERSE MAGNETIC
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    Magnetostatics
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    Multilayers
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    Polarization
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    Quantum chemistry
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    Quantum theory
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    Spin waves
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    QUANTUM CRYPTOGRAPHY