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arXiv · 2305.11754

Single-photon source over the terahertz regime

Caspar Groiseau·Antonio I. Fernández-Domínguez·Diego Martín-Cano·Carlos Sánchez Muñoz
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Abstract

We present a proposal for a tunable source of single photons operating in the terahertz (THz) regime. This scheme transforms incident visible photons into quantum THz radiation by driving a single polar quantum emitter with an optical laser, with its permanent dipole enabling dressed THz transitions enhanced by the resonant coupling to a cavity. This mechanism offers optical tunability of properties such as the frequency of the emission or its quantum statistics (ranging from antibunching to entangled multi-photon states) by modifying the intensity and frequency of the drive. We show that the implementation of this proposal is feasible with state-of-the-art photonics technology.

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Caspar Groiseau, Antonio I. Fernández-Domínguez, Diego Martín-Cano, Carlos Sánchez Muñoz. 2023-05-19. Single-photon source over the terahertz regime. https://doi.org/10.1103/prxquantum.5.010312

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