The Effects of Amplification of Fluctuation Energy Scale by Quantum Measurement Choice on Quantum Chaotic Systems: Semiclassical Analysis

Autor: J. K. Eastman, S. Greenfield, Arjendu K. Pattanayak, André R. R. Carvalho, Yueheng Shi
Rok vydání: 2019
Předmět:
Zdroj: Understanding Complex Systems ISBN: 9783030108915
DOI: 10.1007/978-3-030-10892-2_9
Popis: Measurement choices in weakly-measured open quantum systems can affect quantum trajectory chaos. We consider this scenario semi-classically and show that measurement acts as nonlinear generalized fluctuation and dissipation forces. These can alter effective dissipation in the quantum spread variables and hence change the dynamics, such that measurement choices can enhance quantum effects and make the dynamics chaotic, for example. This analysis explains the measurement dependence of quantum chaos at a variety of parameter settings, and in particular we demonstrate that the choice of monitoring scheme can be more relevant than system scale \(\beta \) in determining the ‘quantumness’ of the system.
Databáze: OpenAIRE