Entanglement of a microcanonical ensemble

2006/11/13 by Tobias Verhulst, Jan Naudts
Computer Science · Physics and Astronomy · #Microcanonical ensemble #Multipartite entanglement #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum entanglement #Quantum many-body systems #Simple (philosophy) #Squashed entanglement #Statistical ensemble #quant-ph

paper · pdf · doi:10.1088/1751-8113/40/10/016

published as J. Phys. A 40, 2475-2483 (2007) · 10 pages

arxiv created 2006/11/13 · openalex publication_date 2007/02/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We replace time-averaged entanglement by ensemble-averaged entanglement and derive a simple expression for the latter. We show how to calculate the ensemble average for a two-spin system and for the Jaynes–Cummings model. In both cases the time-dependent entanglement is known as well so that one can verify that the time average coincides with the ensemble average.

Citations

• Comparison of quantum and semiclassical radiation theories with application to the beam maser
• Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system
• Dynamical entanglement and chaos: The case of Rydberg molecules
• Entanglement as a signature of quantum chaos
• Quantifying Entanglement