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- W3193497648 abstract "We report on the experimental realization and detection of dynamical currents in a spin-textured lattice in momentum space. Collective tunneling is implemented via cavity-assisted Raman scattering of photons by a spinor Bose-Einstein condensate into an optical cavity. The photon field inducing the tunneling processes is subject to cavity dissipation, resulting in effective directional dynamics in a non-Hermitian setting. We observe that the individual tunneling events are superradiant in nature and locally resolve them in the lattice by performing real-time, frequency-resolved measurements of the leaking cavity field. The results can be extended to a regime exhibiting a cascade of currents and simultaneous coherences between multiple lattice sites, where numerical simulations provide further understanding of the dynamics. Our observations showcase dynamical tunneling in momentum-space lattices and provide prospects to realize dynamical gauge fields in driven-dissipative settings." @default.
- W3193497648 created "2021-08-30" @default.
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- W3193497648 date "2022-04-08" @default.
- W3193497648 modified "2023-10-12" @default.
- W3193497648 title "Observing Dynamical Currents in a Non-Hermitian Momentum Lattice" @default.
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- W3193497648 doi "https://doi.org/10.1103/physrevlett.128.143602" @default.
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- W3193497648 hasPublicationYear "2022" @default.
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