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arXiv · 1409.2892

Storage and retrieval of ultrafast single photons using a room-temperature diamond quantum memory

Duncan G. England·Kent A. G. Fisher·Jean-Philippe W. MacLean·Philip J. Bustard·Rune Lausten·Kevin J. Resch·Benjamin J. Sussman
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Abstract

We report the storage and retrieval of single photons, via a quantum memory, in the optical phonons of room-temperature bulk diamond. The THz-bandwidth heralded photons are generated by spontaneous parametric downconversion and mapped to phonons via a Raman transition, stored for a variable delay, and released on demand. The second-order correlation of the memory output is $g^{(2)}(0) = 0.65 \pm 0.07$, demonstrating preservation of non-classical photon statistics throughout storage and retrieval. The memory is low-noise, high-speed and broadly tunable; it therefore promises to be a versatile light-matter interface for local quantum processing applications.

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Duncan G. England, Kent A. G. Fisher, Jean-Philippe W. MacLean, Philip J. Bustard, Rune Lausten, Kevin J. Resch, Benjamin J. Sussman. 2014-09-11. Storage and retrieval of ultrafast single photons using a room-temperature diamond quantum memory. https://doi.org/10.1103/physrevlett.114.053602

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