115 citations · 847 across the 17 of their papers we have counts for
5 papers · 1 filter
Divergence of predictive model output as indication of phase transitions
Frank Schäfer, Niels Lörch
We introduce a new method to identify phase boundaries in physical systems. It is based on training a predictive model such as a neural network to infer a physical system's paramet…
Nonlinear Quantum Behavior of Ultrashort-Pulse Optical Parametric Oscillators
Tatsuhiro Onodera, Edwin Ng, Chris Gustin +6
The quantum features of ultrashort-pulse optical parametric oscillators (OPOs) are investigated theoretically in the nonlinear regime near and above threshold. Viewing the pulsed O…
Interaction-induced time-symmetry breaking in driven quantum oscillators
M. I. Dykman, Christoph Bruder, Niels Lörch +1
We study parametrically driven quantum oscillators and show that, even for weak coupling between the oscillators, they can exhibit various many-body states with broken time-transla…
Optimal work extraction from quantum states by photo-assisted Cooper pair tunneling
Niels Lörch, Christoph Bruder, Nicolas Brunner +1
The theory of quantum thermodynamics predicts fundamental bounds on work extraction from quantum states. As these bounds are derived in a very general and abstract setting, it is u…
Quantum effects in amplitude death of coupled anharmonic self-oscillators
Ehud Amitai, Martin Koppenhöfer, Niels Lörch +1
Coupling two or more self-oscillating systems may stabilize their zero-amplitude rest-state, therefore quenching their oscillation. This phenomenon is termed "amplitude death". Wel…