5 papers
Semiconductor-based selective emitter with sharp cutoff for thermophotovoltaic energy conversion
Qing Ni, Rajagopalan Ramesh, Cheng-An Chen +1
Semiconductor emitter can possibly achieve sharp cutoff wavelength due to its intrinsic bandgap absorption and almost zero sub-bandgap emission without doping. A germanium wafer ba…
Observation of scale invariance in two-dimensional matter-wave Townes solitons
Cheng-An Chen, Chen-Lung Hung
We report near-deterministic generation of two-dimensional (2D) matter-wave Townes solitons, and a precision test on scale invariance in attractive 2D Boses gases. We induce a shap…
Observation of quasiparticle pair-production and quantum entanglement in atomic quantum gases quenched to an attractive interaction
Cheng-An Chen, Sergei Khlebnikov, Chen-Lung Hung
We report observation of quasiparticle pair-production and characterize quantum entanglement created by a modulational instability in an atomic superfluid. By quenching the atomic…
Observation of universal quench dynamics and Townes soliton formation from modulational instability in two-dimensional Bose gases
Cheng-An Chen, Chen-Lung Hung
We experimentally study universal nonequilibrium dynamics of two-dimensional atomic Bose gases quenched from repulsive to attractive interactions. We observe the manifestation of m…
Trapping single atoms on a nanophotonic circuit with configurable tweezer lattices
May E. Kim, Tzu-Han Chang, Brian M. Fields +2
Trapped atoms near nanophotonics form an exciting platform for bottom-up synthesis of strongly interacting quantum matter. The ability to induce tunable long-range atom-atom intera…