Waveguide QED: Many-body bound-state effects in coherent and Fock-state scattering from a two-level system

By Huaixiu Zheng, Daniel J. Gauthier, H. Baranger. 2010

179 citations recorded by the source corpus.

Strong coupling between a two-level system (TLS) and bosonic modes produces dramatic quantum optics effects. We consider a one-dimensional continuum of bosons coupled to a single localized TLS, a system which may be realized in a variety of plasmonic, photonic, or electronic contexts. We present the exact many-body scattering eigenstate obtained by imposing open boundary conditions. Multiphoton bound states appear in the scattering of two or more photons due to the coupling between the photons and the TLS. Such bound states are shown to have a large effect on scattering of both Fock- and coherent-state wave packets, especially in the intermediate coupling-strength regime. We compare the statistics of the transmitted light with a coherent state having the same mean photon number: as the interaction strength increases, the one-photon probability is suppressed rapidly, and the two- and three-photon probabilities are greatly enhanced due to the many-body bound states. This results in non-Poissonian light.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/19483deef37765c97578cae3a0ae3598dd78f934

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In Atomic and Molecular Physics, and Optics

Citations in the corpus

Colloquium: Strongly interacting photons in one-dimensional continuum (2016, methodology): “9 By neglecting the contributions from N ≥ 3 photons in |ψoutα 〉 for n̄ ≤ 1, Zheng et al. (2010) have found g(2)(x2 − x1) (24) = | ∫ dk1dk2α(k1)α(k2)(tk1tk2 − rk1rk2e−(Γ+γ)|x|/vg )|2 | ∫ dk1dk2α(k1)α(k2)tk1tk2 |2 .”
Microwave photonics with superconducting quantum circuits (2017, unknown): “question usually asked is how the atom affects the transport of photons, either in Fock states with one [78, 79, 167, 272–274, 568, 572, 575, 580, 583, 584, 592–594, 597, 598, 601, 603, 607, 609, 610, 617, 619, 623, 629, 630], two [167, 564, 568, 571–574, 580, 583, 593–596, 598, 601, 607, 614, 620, ”
Subradiant states of quantum bits coupled to a one-dimensional waveguide (2018, background): “Superconducting qubits coupled to photons propagating in open transmission lines [1–3] offer a platform to realize and investigate the fascinating world of quantum light-matter interactions in one dimension – so-called “waveguide quantum electrodynamics (QED)” [4–11].”