Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 30: Quantum Optics (Miscellaneous) IV

Q 30.7: Talk

Wednesday, March 16, 2022, 12:15–12:30, Q-H14

Exploring the temporal-mode selective frequency conversion of PDC states — •Patrick Folge, Matteo Santandrea, Michael Stefszky, Benjamin Brecht, and Christine Silberhorn — Paderborn University, Department of Physics, Integrated Quantum Optics, Institute for Photonic Quantum Systems (PhoQS), Warburger Straße 100, 33098 Paderborn, Germany

Nonlinear optical elements are an essential component in many emerging quantum technologies because they can produce and probe light with non-classical features. Of central importance are parametric down-conversion (PDC) sources, which are able to generate squeezed states of light. In a multimode framework the PDC sources introduces quantum correlations between sets of field-orthogonal temporal-modes. A different non-linear element considered here is the quantum pulse gate (QPG), which is a specially engineered frequency conversion (FC) process. It allows for the temporal-mode selective conversion of light. Therefore, by applying the QPG to the squeezed light produced by a PDC source, one can transfer the squeezing properties of any mode to the output mode of the QPG. Here, we theoretically investigate which modes are best suited to transfer the squeezing properties to the output of the QPG. Further, we look at realistic scenarios and explore the limits of this scheme.