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arXiv · 1410.1672

Photon distribution function for propagation of two-photon pulses in waveguide-qubit systems

Oleksandr O. Chumak·Evgeniy V. Stolyarov
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Abstract

Propagation of a two-photon pulse in a waveguide coupled to a two-level system (TLS) is studied. The pulse is formed by two spatially separated identical wavepackets. A set of equations governing the dynamics of the photon distribution in the configuration-momentum space is derived and solved. It is shown that the distribution function can be negative that manifests its quasiprobability nature. A spectrum of the reflected light is found to be narrower than that of the transmitted light that features a pronounced filtering effect. Average numbers of the transmitted and reflected photons and their variances are shown to be dependent not only on the pulse widths and the light-TLS interaction but also on the pulse separation that can serve as an effective controlling parameter. Our approach is generalized for the case of an n-photon Fock state.

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Oleksandr O. Chumak, Evgeniy V. Stolyarov. 2014-10-07. Photon distribution function for propagation of two-photon pulses in waveguide-qubit systems. https://doi.org/10.1103/physreva.90.063832

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