Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 55: Quantum Effects

Q 55.3: Talk

Thursday, March 8, 2018, 11:15–11:30, K 1.013

Multi-Photon correlations in an one-dimensional waveguide by light-matter interaction — •Kevin Kleinbeck, Jan Kumlin, and Hans Peter Büchler — University of Stuttgart, Institute for theoretical Physics 3, Stuttgart, Germany

We consider the scattering of photons at artificial atoms in one-dimensional, chiral waveguide systems and study the effective photon-photon interaction mediated by this medium. For the single atom system, we derive a generating functional for the outgoing wave function of any arbitrary multi-photon input state. Using this solution, we study the emergence of three-body correlations under the waveguide dynamics. We show, that even though the system only allows for two-body interactions, the three-body correlation function has contributions both from two-body and purely three-body effects.

In addition, we analytically prove the existence of universal many-body bound states in this model. We find numerical evidence that these bound state contributions become more important with increasing width of the initial wave function.