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arXiv · 1812.11441

Nuclear quantum memory and time sequencing of a single $γ$ photon

Xiwen Zhang·Wen-Te Liao·Alexey Kalachev·Rustem Shakhmuratov·Marlan Scully·Olga Kocharovskaya
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Abstract

A $γ$-ray-nuclear quantum interface is suggested as a new platform for quantum information processing, motivated by remarkable progresses in $γ$-ray quantum optics. The main advantages of a $γ$ photon over an optical photon lie in its almost perfect detectability and much tighter, potentially sub-angstrom, focusability. Nuclear ensembles hold important advantages over atomic ensembles in a unique combination of high nuclear density in bulk solids with narrow, lifetime-broadening Mössbauer transitions even at room temperature. This may lead to the densest long-lived quantum memories and the smallest size photon processors. Here we propose a technique for $γ$ photon quantum memory through a Doppler frequency comb, produced by a set of resonantly absorbing nuclear targets that move with different velocities. It provides a reliable storage, an on-demand generation, and a time sequencing of a single $γ$ photon. This scheme presents the first $γ$-photon-nuclear-ensemble interface opening a new direction of research in quantum information science.

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Xiwen Zhang, Wen-Te Liao, Alexey Kalachev, Rustem Shakhmuratov, Marlan Scully, Olga Kocharovskaya. 2018-12-29. Nuclear quantum memory and time sequencing of a single $γ$ photon. https://doi.org/10.1103/physrevlett.123.250504

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