Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum Optics II
Q 19.6: Talk
Tuesday, March 10, 2020, 15:30–15:45, f342
Collectively enhanced chiral photon emission from an atomic array near a nanofiber — Ryan Jones1, Giuseppe Buonaiuto1,2, Ben Lang1, Igor Lesanovsky1,2, and •Beatriz Olmos1,2 — 1School of Physics and Astronomy and Centre for the Mathematicsand Theoretical Physics of Quantum Non-Equilibrium Systems,The University of Nottingham, Nottingham, NG7 2RD, United Kingdom — 2Institut für Theoretische Physik, Universität Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany
Emitter ensembles interact collectively with the radiation field. In the case of a one-dimensional array of atoms near a nanofiber, this collective light-matter interaction does not only lead to an increased photon coupling to the guided modes within the fiber, but also to a drastic enhancement of the chirality in the photon emission. We show that near-perfect chirality is already achieved for moderately-sized ensembles, containing 10 to 15 atoms. This is of importance for developing an efficient interface between atoms and waveguide structures with unidirectional coupling, with applications in quantum computing and communication such as the development of non-reciprocal photon devices or quantum information transfer channels.