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arXiv · 1301.3364

Two-color quantum memory in double Λ-media

D. Viscor·V. Ahufinger·J. Mompart·A. Zavatta·G. C. La Rocca·M. Artoni
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Abstract

We propose a quantum memory for a single-photon wave packet in a superposition of two different colors, i.e., two different frequency components, using the electromagnetically induced transparency technique in a double-Λ system. We examine a specific configuration in which the two frequency components are able to exchange energy through a four-wave mixing process as they propagate, so the state of the incident photon is recovered periodically at certain positions in the medium. We investigate the propagation dynamics as a function of the relative phase between the coupling beams and the input single-photon frequency components. Moreover, by considering time-dependent coupling beams, we numerically simulate the storage and retrieval of a two-frequency-component single-photon qubit.

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D. Viscor, V. Ahufinger, J. Mompart, A. Zavatta, G. C. La Rocca, M. Artoni. 2013-01-15. Two-color quantum memory in double Λ-media. https://doi.org/10.1103/physreva.86.053827

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