Time evolution of the quantized field coupled to a thermal bath: A phase space approach

Autor(es)

Mattos, E. P. ^[1] ; Vidiella-Barranco, A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Gleb Wataghin Inst Phys, BR-13083859 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ANNALS OF PHYSICS; v. 422, NOV 2020.
• Citações Web of Science: 0

Resumo

We present an alternative method for describing the evolution of a mode of the quantized electromagnetic field in contact with a finite temperature thermal bath. We employ the expansion of the field density operator in terms of coherent states and the related Glauber-Sudarshan P-function in phase space. The method allows us to obtain analytical expressions of the system's time-evolved P-function without needing to solve the corresponding master equation. (C) 2020 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 19/00291-1 - Estados do campo eletromagnético quantizado com fótons adicionados sob a ação do ambiente: atenuação e amplificação
• Beneficiário: Eric Perides Mattos
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica