Single-shot high-resolution identification of discrete frequency modes of single-photon-level optical pulses

• URL: http://arxiv.org/abs/2210.10313v1
• Date: Wed, 19 Oct 2022 06:04:20 GMT
• Title: Single-shot high-resolution identification of discrete frequency modes of single-photon-level optical pulses
• Authors: Daisuke Yoshida, Mayuka Ichihara, Takeshi Kondo, Feng-Lei Hong and Tomoyuki Horikiri
• Abstract summary: We propose a scheme that can identify the frequency mode with high-resolution even for spontaneously emitted photons. We demonstrate the mapping of the frequency mode (100 MHz intervals) to the temporal mode (435 ns intervals) for weak coherent pulses using atomic frequency combs.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Frequency-multiplexed quantum communication usually requires a single-shot identification of the frequency mode of a single photon . In this paper, we propose a scheme that can identify the frequency mode with high-resolution even for spontaneously emitted photons whose generation time is unknown, by combining the time-to-space and frequency-to-time mode mapping. We also demonstrate the mapping of the frequency mode (100 MHz intervals) to the temporal mode (435 ns intervals) for weak coherent pulses using atomic frequency combs. This frequency interval is close to the minimum frequency mode interval of the atomic frequency comb quantum memory with Pr3+ ion-doped Y2SiO5 crystal, and the proposed scheme has the potential to maximize the frequency multiplexing of the quantum repeater scheme with the memory.

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