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07 February 2025
 
  » arxiv » 2301.01559

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Limits of single-photon storage in a single $Λ$-type atom
Zhi-Lei Zhang ; Li-Ping Yang ;
Date 4 Jan 2023
AbstractWe theoretically investigate the limits of single-photon storage in a single $Lambda$-type atom, specifically the trade-off between storage efficiency and storage speed. A control field can be exploited to accelerate the storage process without degrading efficiency too much. We show that the storage speed is ultimately limited by the total decay rate of the involved excited state. For a single-photon pulse propagating in a regular one-dimensional waveguide, the storage efficiency has an upper limit of $50 \%$. Perfect single-photon storage can be achieved by using a chiral waveguide or the Sagnac interferometry. By comparing the storage efficiencies of Fock-state and coherent-state pulses, we reveal the influence of quantum statistics of light on photon storage at the single-photon level. Our results could pave a new way for the optimization of single-photon storage.
Source arXiv, 2301.01559
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