2011/09/30 by Israel Klich · 1 citation
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Field (mathematics) #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Mechanics and Applications #Quantum discord #Quantum electrodynamics #Quantum entanglement #Quantum mechanics #Quantum metrology #Quantum optics #cond-mat.stat-mech #hep-th #quant-ph
paper · pdf · doi:10.1103/physrevlett.109.061601
published as Phys. Rev. Lett. 109, 061601 (2012) · Final published PRL version
openalex publication_date 2012/08/07 · arxiv created 2012/08/15 · arxiv updated 2012/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this Letter we study the entanglement of a quantum radiation field interacting with a dielectric medium. In particular, we describe the quantum mixed state of a field interacting with a dielectric through plasma and Drude models and show that these generate very different entanglement behavior, as manifested in the entanglement entropy of the field. We also present a formula for a "Casimir" entanglement entropy, i.e., the distance dependence of the field entropy. Finally, we study a toy model of the interaction between two plates. In this model, the field entanglement entropy is divergent; however, as in the Casimir effect, its distance-dependent part is finite, and the field matter entanglement is reduced when the objects are far.