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Quantum mollow quadruplet in nonlinear cavity QED

Allcock, Thomas, Langbein, Wolfgang ORCID: https://orcid.org/0000-0001-9786-1023 and Muljarov, Egor A. ORCID: https://orcid.org/0000-0002-2878-4148 2022. Quantum mollow quadruplet in nonlinear cavity QED. Physical Review Letters 128 , 123602. 10.1103/PhysRevLett.128.123602

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Abstract

We develop an exact analytical approach to the optical response of a two-level system coupled to a microcavity for arbitrary excitation strengths. The response is determined in terms of the complex amplitudes of transitions between the rungs of the Jaynes-Cummings ladder, explicitly isolating nonlinearities of different orders. Increasing the pulse area of the excitation field, we demonstrate the formation of a quantum Mollow quadruplet (QMQ), quantizing the semiclassical Mollow triplet into a coherent superposition of a large number of transitions between rungs of the ladder, with inner and outer doublets of the QMQ formed by densely lying inner and outer quantum transitions between the split rungs. Remarkably, a closed-form analytic approximation for the QMQ of any order of nonlinearity is found in the high-field low-damping limit.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: American Physical Society
ISSN: 0031-9007
Date of First Compliant Deposit: 12 May 2022
Date of Acceptance: 7 February 2022
Last Modified: 10 Nov 2022 11:14
URI: https://orca.cardiff.ac.uk/id/eprint/149731

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