301 citations · 2.1k across the 40 of their papers we have counts for
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Digital Quantum Simulation, Trotter Errors, and Quantum Chaos of the Kicked Top
Lukas M. Sieberer, Tobias Olsacher, Andreas Elben +4
This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular,…
Equilibration and macroscopic quantum fluctuations in the Dicke model
Alexander Altland, Fritz Haake
We discuss the unitary quantum dynamics of the Dicke model (spin and oscillator coupled). A suitable quasiprobabilty representing the quantum state turns out to obey a Fokker-Planc…
Quantum measurements without macroscopic superpositions
Dominique Spehner, Fritz Haake
We study a class of quantum measurement models. A microscopic object is entangled with a macroscopic pointer such that each eigenvalue of the measured object observable is tied up…
Overdamping by weakly coupled environments
Massimiliano Esposito, Fritz Haake
A quantum system weakly interacting with a fast environment usually undergoes a relaxation with complex frequencies whose imaginary parts are damping rates quadratic in the couplin…
Quantum statistics of overlapping modes in open resonators
Gregor Hackenbroich, Carlos Viviescas, Fritz Haake
We study the quantum dynamics of optical fields in weakly confining resonators with overlapping modes. Employing a recently developed quantization scheme involving a discrete set o…
Decoherence scenarios from micro- to macroscopic superpositions
Walter T. Strunz, Fritz Haake
Environment induced decoherence entails the absence of quantum interference phenomena from the macroworld. The loss of coherence between superposed wave packets depends on their se…