Toward a Quantum Memory in a Fiber Cavity Controlled by Intracavity Frequency Translation

Abstract

We propose a quantum memory protocol based on trapping photons in a fiber-integrated cavity, comprised of a birefringent fiber with dichroic reflective end facets. Photons are switched into resonance with the fiber cavity by intracavity Bragg-scattering frequency translation, driven by ancillary control pulses. After the storage delay, photons are switched out of resonance with the cavity, again by intracavity frequency translation. We demonstrate storage of quantum-level THz-bandwidth coherent states for a lifetime up to 16 cavity round trips, or 200ns, and a maximum overall efficiency of 73%.

arXiv comment7 pages, 5 figures

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• Toward deterministic sources: Photon generation in a fiber-cavity quantum memory
• Storage of telecom wavelength heralded single photons in a fiber cavity quantum memory
• Highly Efficient and Broadband Optical Delay Line towards a Quantum Memory
• Photon echo in ring cavity: pulse area approach