Entanglement oscillations in non-Markovian quantum channels

Maniscalco, Sabrina; Olivares, Stefano; Paris, Matteo G. A.

doi:10.1103/physreva.75.062119

Cited by 132 publications

(151 citation statements)

References 25 publications

(36 reference statements)

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…The Hu-Paz-Zhang master equation has recently been used to study the entanglement dynamics of initial coherent and twin-beam states of two non-interacting harmonic oscillators linearly coupled to common [32][33][34] or independent structured reservoirs [35,36]. For independent reservoirs the entanglement dynamics for initial non-Gaussian states was presented in [37].…”

Section: Introductionmentioning

confidence: 99%

Environment-dependent dissipation in quantum Brownian motion

et al. 2009

View full text Add to dashboard Cite

The dissipative dynamics of a quantum Brownian particle is studied for different types of environment. We derive analytic results for the time evolution of the mean energy of the system for Ohmic, sub-Ohmic and super-Ohmic environments, without performing the Markovian approximation. Our results allow to establish a direct link between the form of the environmental spectrum and the thermalization dynamics. This in turn leads to a natural explanation of the microscopic physical processes ruling the system time evolution both in the short-time non-Markovian region and in the long-time Markovian one. Our comparative study of thermalization for different environments sheds light on the physical contexts in which non-Markovian dissipation effects are dominant.

show abstract

Section: Introductionmentioning

confidence: 99%

Environment-dependent dissipation in quantum Brownian motion

et al. 2009

View full text Add to dashboard Cite

show abstract

“…In the latter the oscillators are linearly coupled to bosonic reservoirs. Such system-reservoir interactions have for instance been investigated within both Markovian [14,15] and nonMarkovian dissipation models [16][17][18][19]. For systems initially in squeezed states, high temperature entanglement [20], and the exotic behavior of entanglement sudden disappearance and revival (ESDR) [14,16,18,21,22] have been found.…”

Section: Introductionmentioning

confidence: 99%

Entanglement dynamics of quantum oscillators nonlinearly coupled to thermal environments

Voje

Isacsson

2015

Phys. Rev. A

View full text Add to dashboard Cite

We study the asymptotic entanglement of two quantum harmonic oscillators nonlinearly coupled to an environment. Coupling to independent baths and a common bath are investigated. Numerical results obtained using the Wangsness-Bloch-Redfield method are supplemented by analytical results in the rotating wave approximation. The asymptotic negativity as function of temperature, initial squeezing and coupling strength, is compared to results for systems with linear system-reservoir coupling. We find that due to the parity conserving nature of the coupling, the asymptotic entanglement is considerably more robust than for the linearly damped cases. In contrast to linearly damped systems, the asymptotic behavior of entanglement is similar for the two bath configurations in the nonlinearly damped case. This is due to the two-phonon system-bath exchange causing a supression of information exchange between the oscillators via the bath in the common bath configuration at low temperatures.

show abstract

“…In the case of continuous variables, non-Markovian effects on entanglement evolution have been discussed [10,27]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [27], the authors considered two identical oscillators coupled to separate baths in the very high temperature regime and analyze how the matching between the frequency of the oscillators and the spectral density of the bath affects both Markovian and non-Markovian dynamics. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Entanglement dynamics of nonidentical oscillators under decohering environments

2010

View full text Add to dashboard Cite

We study the evolution of entanglement of a pair of coupled, non-resonant harmonic oscillators in contact with an environment. For both the cases of a common bath and of two separate baths for each of the oscillators, a full master equation is provided without rotating wave approximation. This allows us to characterize the entanglement dynamics as a function of the diversity between the oscillators frequencies and their mutual coupling. Also the correlation between the occupation numbers is considered to explore the degree of quantumness of the system. The singular effect of the resonance condition (identical oscillators) and its relationship with the possibility of preserving asymptotic entanglement are discussed. The importance of the bath's memory properties is investigated by comparing Markovian and non-Markovian evolutions.

show abstract

Entanglement oscillations in non-Markovian quantum channels

Cited by 132 publications

References 25 publications

Environment-dependent dissipation in quantum Brownian motion

Environment-dependent dissipation in quantum Brownian motion

Entanglement dynamics of quantum oscillators nonlinearly coupled to thermal environments

Entanglement dynamics of nonidentical oscillators under decohering environments

Contact Info

Product

Resources

About