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arXiv · 1911.03995

Temporal imaging for ultra-narrowband few-photon states of light

Mateusz Mazelanik·Adam Leszczyński·Michał Lipka·Michał Parniak·Wojciech Wasilewski
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Abstract

Plenty of quantum information protocols are enabled by manipulation and detection of photonic spectro-temporal degrees of freedom via light-matter interfaces. While present implementations are well suited for high-bandwidth photon sources such as quantum dots, they lack the high resolution required for intrinsically narrow-band light-atom interactions. Here, we demonstrate far-field temporal imaging based on ac-Stark spatial spin-wave phase manipulation in a multimode gradient echo memory. We achieve spectral resolution of 20 kHz with MHz-level bandwidth and ultra-low noise equivalent to 0.023 photons, enabling operation in the single-quantum regime.

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Mateusz Mazelanik, Adam Leszczyński, Michał Lipka, Michał Parniak, Wojciech Wasilewski. 2020-03-26. Temporal imaging for ultra-narrowband few-photon states of light. https://doi.org/10.1364/optica.382891

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