Exact solution of a lambda quantum system driven by a two-photon wavepacket

• URL: http://arxiv.org/abs/2312.05353v1
• Date: Fri, 8 Dec 2023 20:24:24 GMT
• Title: Exact solution of a lambda quantum system driven by a two-photon wavepacket
• Authors: Wendel Lopes da Silva and Daniel Valente
• Abstract summary: We analytically find the non-perturbative dynamics of an atom driven by a two-photon wavepacket. As an application, we study the dynamics of a quantum state purification.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Three-level atoms in lambda configuration find diverse applications in quantum information processing, and a promising way to manipulate their quantum states is with single-photon pulses propagating in a waveguide (which can be theoretically regarded as a highly broadband regime of the Jaynes-Cummings model). Here, we analytically find the non-perturbative dynamics of a lambda atom driven by a two-photon wavepacket, propagating in a one-dimensional electromagnetic environment. As an application, we study the dynamics of a quantum state purification. By comparing our exact model with an approximated model of two cascaded single-photon wavepackets, we show how two-photon nonlinearities and stimulated emission affect the purification.

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