Coherent superposition of emitted and resonantly scattered photons from a two-level system driven by an even-$π$ pulse

• URL: http://arxiv.org/abs/2507.05943v1
• Date: Tue, 08 Jul 2025 12:40:51 GMT
• Title: Coherent superposition of emitted and resonantly scattered photons from a two-level system driven by an even-$π$ pulse
• Authors: I. V. Krainov, A. I. Galimov, M. V. Rakhlin, A. A. Toropov, T. V. Shubina,
• Abstract summary: We report the observation of a bunching of 3 photon states, which is a coherent superposition of emitted photons and resonantly scattered laser photons.<n>Such a beam is a high-order member of the Fock space, promising for quantum technologies.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report the observation of a bunching of ~3 photon states, which is a coherent superposition of emitted photons and resonantly scattered laser photons, arising upon excitation by even-$\pi$ pulses of a two-level system represented by a charged quantum dot in a microcavity. This phenomenon emerges because the exciting laser pulse contains several tens of photons whose quantum amplitude distribution creates such a superposition, and the polarization of the scattered photons is changed by the interaction with the charged resonant system. Such a beam is a high-order member of the Fock space, promising for quantum technologies.

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