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Quantum Metrology with Strongly Interacting Spin Systems
Hengyun Zhou, Joonhee Choi, Soonwon Choi +10
Quantum metrology makes use of coherent superpositions to detect weak signals. While in principle the sensitivity can be improved by increasing the density of sensing particles, in…
Robust Dynamic Hamiltonian Engineering of Many-Body Spin Systems
Joonhee Choi, Hengyun Zhou, Helena S. Knowles +3
We introduce a new approach for the robust control of quantum dynamics of strongly interacting many-body systems. Our approach involves the design of periodic global control pulse…
Probing quantum thermalization of a disordered dipolar spin ensemble with discrete time-crystalline order
Joonhee Choi, Hengyun Zhou, Soonwon Choi +8
We investigate thermalization dynamics of a driven dipolar many-body quantum system through the stability of discrete time crystalline order. Using periodic driving of electronic s…
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Soonwon Choi, Joonhee Choi, Renate Landig +11
Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. It is well known that out-of-equilibrium systems can display a ric…
Experimental determination of irreversible entropy production in out-of-equilibrium mesoscopic quantum systems
M. Brunelli, L. Fusco, R. Landig +9
By making use of a recently proposed framework for the inference of thermodynamic irreversibility in bosonic quantum systems, we experimentally measure and characterize the entropy…
Real-time observation of fluctuations at the driven-dissipative Dicke phase transition
Ferdinand Brennecke, Rafael Mottl, Kristian Baumann +3
We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose-Einstein condensate to…
Vacuum-Induced Transparency
Haruka Tanji-Suzuki, Wenlan Chen, Renate Landig +2
Photons are excellent information carriers but normally pass through each other without consequence. Engineered interactions between photons would enable applications from quantum…