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Quantum interfaces using nanoscale surface plasmons

  • Quantum Optics and Quantum Information
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Abstract

The strong coupling between individual optical emitters and propagating surface plasmons confined to a conducting nanotip make this system act as an ideal interface for quantum networks, through which a stationary qubit and a flying photon (surface plasmon) qubit can be interconverted via a Raman process. This quantum interface paves the way for many essential functions of a quantum network, including sending, receiving, transferring, swapping, and entangling qubits at distributed quantum nodes as well as a deterministic source and an efficient detector of a single-photon. Numerical simulation shows that this scheme is robust against experimental imperfections and has high fidelity. Furthermore, being smaller this interface would significantly facilitate the scalability of quantum computers.

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Authors and Affiliations

  1. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China

    F. Y. Hong & S. J. Xiong

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  1. F. Y. Hong
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  2. S. J. Xiong
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Correspondence to F. Y. Hong.

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Hong, F., Xiong, S. Quantum interfaces using nanoscale surface plasmons. Eur. Phys. J. D 50, 325–329 (2008). https://doi.org/10.1140/epjd/e2008-00218-8

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  • DOI: https://doi.org/10.1140/epjd/e2008-00218-8

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