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arXiv · 2312.05353

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

Wendel Lopes da Silva·Daniel Valente
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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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Wendel Lopes da Silva, Daniel Valente. 2023-12-08. Exact solution of a lambda quantum system driven by a two-photon wavepacket. https://doi.org/10.1364/josab.515618

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