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A quantum memory can be viewed as a light-matter beam-splitter, mapping a photon to a superposition of the output optical mode and stored mode. We use this mechanism to demonstrate non-classical one-photon and two-photon interference.
We demonstrate a quantum memory using the optical phonon modes of room-temperature diamond [1, 2]. The memory stores THz-bandwidth single photons produced by parametric down-conversion for several picoseconds and offers operations upon the stored light.
We have demonstrated a THz-bandwidth quantum memory using the optical phonon modes of room-temperature diamond [1]. A noise-floor of just 0.007 photons per pulse provides the opportunity to store photons produced by spontaneous parametric downconversion.
We demonstrate entanglement between the vibrational mode of two macroscopic, spatially-separated diamonds at room temperature with ultrashort pulses and a far-off-resonant Raman interaction.
We demonstrate the coherent storage and retrieval of sub-nanosecond low-intensity light pulses with spectral bandwidths exceeding 1 GHz in cesium vapor, using the novel, far off-resonant two-photon Raman memory protocol.
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