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Computer Optics

Spectroscopy of cascade multiresonator quantum memory

Nikolay Sergeevich Perminov, Kirill Viktorovich Petrovnin, K. I. Gerasimov, Roman Kirillov, R. R. Latypov, Oleg N. Sherstyukov, Sergey A. Moiseev

Published Jan 1, 2018• 5 citations
Publisher

Abstract

We study spectral properties of a cascaded multiresonator microwave quantum memory integrated into a waveguide-resonator system. On the basis of experimental data, we reconstruct the internal parameters of the circuit under study, give estimates of quantum efficiency, and show the possibility of achieving optimal conditions for its realization.

DOI
10.18287/2412-6179-2018-42-4-614-619

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We study spectral properties of a cascaded multiresonator microwave quantum memory integrated into a waveguide-resonator system. On the basis of experimental data, we reconstruct the internal parameters of the circuit under study, give estimates of quantum efficiency, and show the possibility of achieving optimal conditions for its realization.
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Quantum memory based on a system of resonators each containing one atom and connected to an external waveguide through a common resonator has been proposed. The parameters of the resonators and atoms interacting with them at which the effective transfer of a single-photon signal wave packet from the external waveguide to atomic states for long-term storage of the quantum state of the photon have been determined using reversible properties of the dynamics of the system under study and optimization methods. The advantages of quantum memory under consideration, as well as experimental possibilities of its implementation, have been discussed.
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A scheme of multiresonator quantum memory based on a system of four interacting resonators connected through a common resonator to an external carrier by means of switchable coupling has been studied. The parameters of the resonators and the frequency spectrum of the system under study have been optimized using algebraic methods. It has been shown that these parameters allow efficient controlled reversible transfer of information into quantum memory with arbitrarily long storage. Possible applications of the developed scheme for quantum processing have been discussed.