Work

Phase-space contraction and quantum operations

Year: 2005

Type: article

Abstract: We give a criterion to differentiate between dissipative and diffusive quantum operations. It is based on the classical idea that dissipative processes contract volumes in phase space. We define a quantity that can be regarded as ``quantum phase space contraction rate'' and which is related to a fundamental property of quantum channels: nonunitality. We relate it to other properties of the channel and also show a simple example of dissipative noise composed with a chaotic map. The emergence of attractor-like structures is displayed.

Source: Physical Review A

DOI: 10.1103/physreva.72.062315

Authors: Ignacio García-Mata, Marcos Saraceno, María Elena Spina, Gabriel Carlo

Institutions: Comisión Nacional de Energía Atómica, National University of General San Martín, University of Insubria, Istituto Nazionale per la Fisica della Materia

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2018224481

FWCI: 0.207

Cites: 28

Cited by: 6

Related to: 10