Macroscopic quantum self-trapping and Josephson oscillations of exciton polaritons
Marco Abbarchi,Marco Abbarchi,Alberto Amo,V. G. Sala,V. G. Sala,Dmitry Solnyshkov,Hugo Flayac,Lydie Ferrier,Isabelle Sagnes,Elisabeth Galopin,Aristide Lemaître,Guillaume Malpuech,Jacqueline Bloch +12 more
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In this article, the authors demonstrated an optical realization of self-trapping and Josephson oscillations using polariton condensates in overlapping microcavities, and demonstrated that such effects can be observed in optical systems.Abstract:
The Josephson effects that arise when two quantum states are coupled through a barrier are difficult to observe in optical systems because photon–photon interactions are so weak. Researchers have now demonstrated an optical realization of two such phenomena—macroscopic self-trapping and Josephson oscillations—using polariton condensates in overlapping microcavities.read more
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Integrated quantum polariton interferometry
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Cavity-enhanced magnetometer with a spinor Bose-Einstein condensate
TL;DR: In this article, the authors proposed a composite light-matter magnetometer based on a transversely driven multi-component Bose-Einstein condensate coupled to two distinct electromagnetic modes of a linear cavity.
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Confinement of Bose–Einstein magnon condensates in adjustable complex magnetization landscapes
Matthias Schweizer,Alexander J. E. Kreil,Georg von Freymann,Burkard Hillebrands,Alexander A. Serga +4 more
TL;DR: In this article , the authors demonstrate the spatiotemporal control of the BEC density distribution through the excitation of magnon supercurrents in an inhomogeneously magnetized yttrium iron garnet film.
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Polariton multistability in a nonlinear optomechanical cavity.
TL;DR: In this article, the authors theoretically studied the polariton multistability in a solid state based optomechanical resonator embedded with a quantum well and a second order nonlinear medium.
References
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Direct observation of tunneling and nonlinear self-trapping in a single bosonic Josephson junction.
TL;DR: A novel nonlinear effect known as macroscopic quantum self-trapping, which leads to the inhibition of large amplitude tunneling oscillations in superconducting and superfluid Josephson junctions is confirmed.
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Strongly interacting polaritons in coupled arrays of cavities
TL;DR: In this article, a system of polaritons held in an array of resonant optical cavities, which could be realized using photonic crystals or toroidal microresonators, was shown to form a strongly interacting many-body system showing quantum phase transitions, where individual particles can be controlled and measured.
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Coherent oscillations between two weakly coupled Bose-Einstein condensates: Josephson effects, π oscillations, and macroscopic quantum self-trapping
TL;DR: In this paper, coherent atomic oscillations between two weakly coupled Bose-Einstein condensates are discussed, where the weak link is provided by a laser barrier in a (possibly asymmetric) double-well trap or by Raman coupling between two Condensates in different hyperfine levels.