Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantum Optics (Miscellaneous) II

Q 12.1: Talk

Monday, March 14, 2022, 16:30–16:45, Q-H14

Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity — •Jan Philipp Höpker, Maximilian Protte, Christof Eigner, Christine Silberhorn, Polina Sharapova, Jan Sperling, Torsten Meier, and Tim Bartley — Department of Physics, Paderborn University, Warburger Str. 100, 33098 Paderborn, Germany

In quantum optics, a measurement can be used as a tool to manipulate a quantum state. Photon subtraction, implemented with a partial detection of a quantum state, is a pertinent example for this nonlinear manipulation. Furthermore, single-photon measurements (a particle-like phenomenon) can be directly combined with the interference of two quantum states (a wave-like phenomenon), yielding interesting features in both phase space and the photon-number basis. In this work, we explore theoretically and experimentally complex correlations in the photon numbers of two-mode quantum states using this scheme. For this, we use integrated beam-splitter networks based on titanium in-diffused lithium niobate waveguides and superconducting single-photon detectors.