We examine the emergence of objectivity via quantum Darwinism through the use of a collision model, i.e., where the dynamics is modeled through sequences of unitary interactions between the system and the individual constituents of the environment, termed "ancillas." By exploiting versatility of this framework, we show that one can transition from a "Darwinistic" to an "encoding" environment by simply tuning their interaction. Furthermore, we establish that in order for a setting to exhibit quantum Darwinism we require a mutual decoherence to occur between the system and environmental ancillas, thus showing that system decoherence alone is not sufficient. Finally, we demonstrate that the observation of quantum Darwinism is sensitive to a nonuniform system-environment interaction.
Collisional unfolding of quantum Darwinism / S. Campbell, B. Çakmak, Ö.E. Müstecaplloǧlu, M. Paternostro, B. Vacchini. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 99:4(2019), pp. 042103.1-042103.7. [10.1103/PhysRevA.99.042103]
Collisional unfolding of quantum Darwinism
B. Vacchini
2019
Abstract
We examine the emergence of objectivity via quantum Darwinism through the use of a collision model, i.e., where the dynamics is modeled through sequences of unitary interactions between the system and the individual constituents of the environment, termed "ancillas." By exploiting versatility of this framework, we show that one can transition from a "Darwinistic" to an "encoding" environment by simply tuning their interaction. Furthermore, we establish that in order for a setting to exhibit quantum Darwinism we require a mutual decoherence to occur between the system and environmental ancillas, thus showing that system decoherence alone is not sufficient. Finally, we demonstrate that the observation of quantum Darwinism is sensitive to a nonuniform system-environment interaction.File | Dimensione | Formato | |
---|---|---|---|
PhysRevA.99.042103.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
381.06 kB
Formato
Adobe PDF
|
381.06 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
1901.03335(2).pdf
accesso aperto
Tipologia:
Pre-print (manoscritto inviato all'editore)
Dimensione
389.89 kB
Formato
Adobe PDF
|
389.89 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.