We derive the general form of a master equation describing the reduced time evolution of a sequence of subsystems "propagating'' in an environment which can be described as a sequence of subenvironments. The interaction between subsystems and subenvironments is described in terms of a collision model, with the irreversible dynamics of the subenvironments between collisions explicitly taken into account. In the weak coupling regime, we show that the collisional model produces a correlated Markovian evolution for the joint density matrix of the multipartite system. The associated Lindblad superoperator contains pairwise terms describing cross correlation between the different subsystems. Such a model can describe a broad range of physical situations, ranging from quantum channels with memory to photon propagation in concatenated quantum optical systems.

Giuovannetti, V., Palma, G. (2012). Master Equations for Correlated Quantum Channels. PHYSICAL REVIEW LETTERS, 108, 40401-1-40401-5 [10.1103/PhysRevLett.108.040401].

Master Equations for Correlated Quantum Channels

PALMA, Gioacchino Massimo
2012-01-01

Abstract

We derive the general form of a master equation describing the reduced time evolution of a sequence of subsystems "propagating'' in an environment which can be described as a sequence of subenvironments. The interaction between subsystems and subenvironments is described in terms of a collision model, with the irreversible dynamics of the subenvironments between collisions explicitly taken into account. In the weak coupling regime, we show that the collisional model produces a correlated Markovian evolution for the joint density matrix of the multipartite system. The associated Lindblad superoperator contains pairwise terms describing cross correlation between the different subsystems. Such a model can describe a broad range of physical situations, ranging from quantum channels with memory to photon propagation in concatenated quantum optical systems.
2012
Giuovannetti, V., Palma, G. (2012). Master Equations for Correlated Quantum Channels. PHYSICAL REVIEW LETTERS, 108, 40401-1-40401-5 [10.1103/PhysRevLett.108.040401].
File in questo prodotto:
File Dimensione Formato  
2012PRLGiovannetti.pdf

accesso aperto

Dimensione 300.95 kB
Formato Adobe PDF
300.95 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/77332
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 112
  • ???jsp.display-item.citation.isi??? 109
social impact