Related papers: Scattering theory of frequency-entangled biphoton states facilitated by cavity polaritons

Scattering theory of frequency-entangled biphoton states facilitated by cavity polaritons

URL: http://arxiv.org/abs/2510.16358v1
Date: Sat, 18 Oct 2025 05:37:07 GMT
Title: Scattering theory of frequency-entangled biphoton states facilitated by cavity polaritons
Authors: Andrei Piryatinski, Nishaant Jacobus, Sameer Dambal, Eric R. Bittner, Yu Zhang, Ajay Ram Srimath Kandada,
Abstract summary: We develop a scattering theory describing the interaction of frequency-entangled photon pairs with cavity polariton and bipolariton states.<n>We argue that biphoton scattering quantum light spectroscopy best serves as a sensitive probe of polariton and bipolariton states in the photon-vacuum cavity steady state.
Score: 2.005053412488216
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The use of quantum light to probe exciton properties in semiconductor and molecular nanostructures typically occurs in the low-intensity regime. A substantial enhancement of exciton-photon coupling can be achieved with photonic cavities, where excitons hybridize with cavity modes to form polariton states. To provide a theoretical framework for interpreting experimental efforts in this direction, we develop a scattering theory describing the interaction of frequency-entangled photon pairs with cavity polariton and bipolariton states under various coupling regime. Employing the Tavis-Cummings model in combination with our scattering approach, we present a quantitative analysis of how polariton/bipolariton interaction with the entangled photon pair modifies its joint spectral amplitude (JSA). Specifically, we examine the effects of the cavity-mode steady-state population, exciton-cavity coupling strength, and different forms of the input photon JSA. Our results show that the entanglement entropy of the scattered photons is highly sensitive to the interplay between the input JSA and the spectral line shapes of the polariton resonances, emphasizing the cavity filtering effects. We argue that biphoton scattering quantum light spectroscopy best serves as a sensitive probe of polariton and bipolariton states in the photon-vacuum cavity steady state.

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