Berlin 2024 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 18: Poster II
QI 18.6: Poster
Mittwoch, 20. März 2024, 11:00–14:30, Poster A
Critically coupled qubit-photon interfaces in waveguide QED — •Nicolas Jungwirth1,2,3 and Peter Rabl1,2,3 — 1Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany — 2Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany
The development of large-scale quantum processors relies on the effective implementation of quantum networks. Chiral interfaces constitute a novel approach in this context. To this end, interfaces that feature giant atoms coupled to a waveguide at two spatially separated points have already been introduced. In these systems, the directional emission of a photon is based on interference effects [1].
We propose an extended configuration for a more efficient transfer between nodes. By studying the non-Markovian dynamics of the giant atom, we ascertain critical coupling conditions under which the shape of the spontaneously emitted photons becomes almost fully symmetric.
[1] C. Joshi et al., Phys. Rev. X 13, 021039 (2023).
Keywords: Waveguide QED; Directional photon emission; Qubit-photon interfaces; Non-Markovian dynamics