Entanglement dynamics for two interacting spins

Journal Article · Mon Aug 01 00:00:00 EDT 2005 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2005.01.003· OSTI ID:20690176

Novaes, Marcel ^[1]

---

1. Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, 13083-970 Campinas-SP (Brazil)

We study the dynamical generation of entanglement for a very simple system: a pair of interacting spins, s {sub 1} and s {sub 2}, in a constant magnetic field. Two different situations are considered: (a) s {sub 1} {yields} {infinity}, s {sub 2} = 1/2 and (b) s {sub 1} = s {sub 2} {yields} {infinity}, corresponding, respectively, to a quantum degree of freedom coupled to a semiclassical one (a qubit in contact with an environment) and a fully semiclassical system, which in this case displays chaotic behavior. Relations between quantum entanglement and classical dynamics are investigated.

• OSTI ID: 20690176
• Journal Information: Annals of Physics (New York), Vol. 318, Issue 2; Other Information: DOI: 10.1016/j.aop.2005.01.003; PII: S0003-4916(05)00008-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHAOS THEORY
CORRELATIONS
DEGREES OF FREEDOM
ENERGY LEVELS
MAGNETIC FIELDS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
QUBITS
SEMICLASSICAL APPROXIMATION
SPIN