Quantum discord, and related indicators, are raising a relentless interest as a novel paradigm of nonclassical correlations beyond entanglement. Here, we discover a discord-activated mechanism yielding steady-state entanglement production in a realistic continuous-variable setup. This comprises two coupled optomechanical cavities, where the optical modes (OMs) communicate through a fiber. We first use a simplified model to highlight the creation of steady-state discord between the OMs. We show next that such discord improves the level of stationary optomechanical entanglement attainable in the system, making it more robust against temperature and thermal noise.

Farace, C., Ciccarello, F., Fazio, R., Giovannetti, V. (2014). Steady-state entanglement activation in optomechanical cavities. PHYSICAL REVIEW A, 89, 022335-1-022335-9 [10.1103/PhysRevA.89.022335].

Steady-state entanglement activation in optomechanical cavities

CICCARELLO, Francesco;
2014-01-01

Abstract

Quantum discord, and related indicators, are raising a relentless interest as a novel paradigm of nonclassical correlations beyond entanglement. Here, we discover a discord-activated mechanism yielding steady-state entanglement production in a realistic continuous-variable setup. This comprises two coupled optomechanical cavities, where the optical modes (OMs) communicate through a fiber. We first use a simplified model to highlight the creation of steady-state discord between the OMs. We show next that such discord improves the level of stationary optomechanical entanglement attainable in the system, making it more robust against temperature and thermal noise.
2014
Farace, C., Ciccarello, F., Fazio, R., Giovannetti, V. (2014). Steady-state entanglement activation in optomechanical cavities. PHYSICAL REVIEW A, 89, 022335-1-022335-9 [10.1103/PhysRevA.89.022335].
File in questo prodotto:
File Dimensione Formato  
PRA activation.pdf

Solo gestori archvio

Dimensione 903.31 kB
Formato Adobe PDF
903.31 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

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/10447/98875
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 21
social impact