Title:Qunatum Journal Club: Storage and retrieval of ultrafast single photons using a
Speaker: Panyu Hou Tsinghua University
Time: 2015-04-09 15:00-2015-04-09 16:00
Venue:CQI meeting room


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) = 0:650:07, 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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