Spin gases as microscopic models for non-Markovian decoherence

2005/06/24 by L. Hartmann, John Calsamiglia, J. Calsamiglia +4 · 2 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.1103/physreva.72.052107

published as Phys. Rev. A 72, 052107 (2005) · 4 pages, 4 figures

arxiv created 2005/06/24 · openalex publication_date 2005/11/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We analyze a microscopic decoherence model in which the total system is described as a spin gas. A spin gas consists of N classically moving particles with additional, interacting quantum degrees of freedom (e.g., spins). For various multipartite entangled probe states, we analyze the decoherence induced by interactions between the probe and environmental spins in such spin gases. We can treat mesoscopic environments (\ensuremath≈10⁵ particles). We present results for a lattice gas, which could be realized by neutral atoms hopping in an optical lattice, and show the effects of non-Markovian and correlated noise, as well as finite-size effects.

Citations

• High-Temperature Superfluidity of Fermionic Atoms in Optical Lattices
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Valence-bond states for quantum computation
• Decoherence, einselection, and the quantum origins of the classical
• Dynamics of the dissipative two-state system

Cited by

• Steady-state entanglement in open and noisy quantum systems
• Dynamic entanglement in oscillating molecules and potential biological implications