Related Experiment Video
Updated: Nov 29, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Quantum trajectories for the variational description of closed systems: A case study with Gaussian states
1TQC, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium.
Abstract:
In this paper, it is proposed to improve the quality of a variational description of a closed quantum system by adding fictitious dissipation that reduces the entanglement. The proposal is implemented for a small Bose-Hubbard chain in the mean field regime, which shows chaotic behavior and associated fast growth of quantum fluctuations. For appropriately chosen dissipation, good agreement with the truncated Wigner approximation is found. This shows that, when chaos leads to the breakdown of a variational method, adding fictitious dissipation can be a cure.
Related Concept Videos
The Quantum-Mechanical Model of an Atom
The Uncertainty Principle
First Law: Particles in One-dimensional Equilibrium
Path Between Thermodynamics States
Gauss's Law
First Law: Particles in Two-dimensional Equilibrium
Newton's first law tells us about...

