Spin Gases: Quantum Entanglement Driven by Classical Kinematics

J. Calsamiglia, L. Hartmann, W. Dür, and H.-J. Briegel
Phys. Rev. Lett. 95, 180502 – Published 26 October 2005

Abstract

A spin gas is a natural extension of a classical gas. It consists of a large number of particles whose (random) motion is described classically, but, in addition, have internal (quantum mechanical) degrees of freedom that interact during collisions. For specific types of quantum interactions we determine the entanglement that occurs naturally in such systems. We analyze how the evolution of the quantum state is determined by the underlying classical kinematics of the gas. For the Boltzmann gas, we calculate the rate at which entanglement is produced and characterize the entanglement properties of the equilibrium state.

  • Received 24 March 2005

DOI:https://doi.org/10.1103/PhysRevLett.95.180502

©2005 American Physical Society

Authors & Affiliations

J. Calsamiglia1, L. Hartmann1, W. Dür1,2, and H.-J. Briegel1,2

  • 1Institut für Theoretische Physik, Universität Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
  • 2Institut für Quantenoptik und Quanteninformation der Österreichischen Akademie der Wissenschaften, Innsbruck, Austria

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 95, Iss. 18 — 28 October 2005

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×