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Photon-photon correlations from a pair of strongly coupled two-level emitters

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Author(s):
Darsheshdar, Elnaz ; Hugbart, Mathilde ; Bachelard, Romain ; Villas-Boas, Celso Jorge
Total Authors: 4
Document type: Journal article
Source: PHYSICAL REVIEW A; v. 103, n. 5, p. 9-pg., 2021-05-06.
Abstract

We investigate two-color photon correlations in the light emitted by two strongly driven, strongly interacting two-level emitters. The correlations are interpreted introducing the collective dressed states picture, which allows us to describe both bunching and antibunching based on the allowed and prohibited transitions. At odds from weakly interacting emitters, the strong interaction lifts the degeneracy of the energy differences between the different states, leading to a temporal breaking of symmetry for the correlations: photons of different frequencies may not be emitted in any order. Finally, we show that most of the virtual processes, which involve pairs of photons, yield nonclassical correlations when the sum of their energies fits any of the interaction-induced sidebands in the emitted spectrum. In particular, depending on the frequency of the emitted photons, correlations strong enough to violate Bell inequalities can appear. (AU)

FAPESP's process: 18/15554-5 - Transport and localization of light in two and three dimensions
Grantee:Romain Pierre Marcel Bachelard
Support Opportunities: Research Grants - Young Investigators Grants - Phase 2
FAPESP's process: 18/01447-2 - Correlations of the light scattered by atomic clouds
Grantee:Romain Pierre Marcel Bachelard
Support Opportunities: Scholarships abroad - Research
FAPESP's process: 19/13143-0 - Cold atoms, photons, and quantum correlations
Grantee:Celso Jorge Villas-Bôas
Support Opportunities: Regular Research Grants
FAPESP's process: 18/10813-2 - Quantum scattering of light and entanglement in cold atomic clouds
Grantee:Elnaz Darsheshdar
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/11999-5 - Collective effects on atomic systems, nuclear spins and cavity quantum electrodynamics
Grantee:Celso Jorge Villas-Bôas
Support Opportunities: Regular Research Grants