Large-bandwidth photonic storage and manipulation with cold and ultracold atoms
ORAL · Invited
Abstract
In the quest for optical quantum memories that are compatible with common single-photon sources, and which can be integrated into land- and satellite-based optical quantum communications networks, atoms play an important role for providing large-bandwidth and long storage time possibilities, using wavelengths that can be integrated into anticipated standard systems. In our experiments, we use both the conventional "fast" and the Autler-Townes protocols to realize large-bandwidth storage and manipulations of photonic signals, leading to fast and relatively low-noise signals, all of which can be implemented using minimal experimental resources. We demonstrated these protocols using laser-cooled and Bose-condensed atoms as the storage medium, and explored how the performance of each approach could be optimised [in terms of noise, efficiency, and resource requirements (laser power/optical depth)] under realistic parameters. Looking forward, we consider the potential for these protocols to contribute to tasks including wavelength conversion, multimode storage, and quantum information processing.
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Publication:"Superradiance-mediated photon storage for broadband quantum memory," A. Rastogi, E. Saglamyurek, T. Hrushevskyi, L. J. LeBlanc[arxiv.2112.09261] (2021)
"Storing short single-photon-level optical pulses in Bose-Einstein condensates for high-performance quantum memory,"E. Saglamyurek, T. Hrushevskyi, A. Rastogi, L. W. Cooke, B. D. Smith, and L. J. LeBlanc. New J. Phys. 23 043028 (2021).
"Coherent storage and manipulation of broadband photons via dynamically controlled Autler-Townes splitting,"E. Saglamyurek, T. Hrushevskyi, A. Rastogi, K. Heshami, and L. J. LeBlanc. Nature Photonics, 12, 774–782 (2018).
