Experimental Reconstruction of the Few-Photon Nonlinear Scattering Matrix from a Single Quantum Dot in a Nanophotonic Waveguide

Le Jeannic, H. and Ramos, T. and Simonsen, S.F. and Pregnolato, T. and Liu, Z. and Schott, R. and Wieck, A.D. and Ludwig, Ar. and Rotenberg, N. and García-Ripoll, J.J. and Lodahl, P.

Volume: 126 Pages:
DOI: 10.1103/PhysRevLett.126.023603
Published: 2021

Coherent photon-emitter interfaces offer a way to mediate efficient nonlinear photon-photon interactions, much needed for quantum information processing. Here we experimentally study the case of a two-level emitter, a quantum dot, coupled to a single optical mode in a nanophotonic waveguide.We carry out few-photon transport experiments and record the statistics of the light to reconstructthe scattering matrix elements of one- and two-photon components. This provides direct insight to the complex nonlinear photon interaction that contains rich many-body physics. © 2021 American Physical Society.

« back