Entanglement dynamics for uniformly accelerated two-level atoms

Hu, Jiawei; Yu, Hongwei

doi:10.1103/physreva.91.012327

Cited by 84 publications

(85 citation statements)

References 38 publications

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“…Hence in the present paper we propose to generalize the results of Ref. [62] in which the authors investigate quantum entanglement between two uniformly accelerated atoms with the same acceleration. Being more specific, we assume that both atoms travel in different hyperbolic trajectories.…”

Section: Introductionmentioning

confidence: 92%

Radiative processes of uniformly accelerated entangled atoms

Menezes¹,

Svaiter²

2016

Phys. Rev. A

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We study radiative processes of uniformly accelerated entangled atoms, interacting with an electromagnetic field prepared in the Minkowski vacuum state. We discuss the structure of the rate of variation of the atomic energy for two atoms travelling in different hyperbolic world lines. We identify the contributions of vacuum fluctuations and radiation reaction to the generation of entanglement as well as to the decay of entangled states. Our results resemble the situation in which two inertial atoms are coupled individually to two spatially separated cavities at different temperatures. In addition, for equal accelerations we obtain that one of the maximally entangled antisymmetric Bell state is a decoherence-free state.

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Section: Introductionmentioning

confidence: 92%

Radiative processes of uniformly accelerated entangled atoms

Menezes¹,

Svaiter²

2016

Phys. Rev. A

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“…Using the coupled basis , , then a set of equations being used to describe the time evolution of the populations of some matrix elements, which are decoupled from other matrix elements, can be obtained as2930…”

Section: The Procedures Of Teleportationmentioning

confidence: 99%

The effects of vacuum fluctuations on teleportation of quantum Fisher information

Jin

2017

Sci Rep

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The teleported quantum Fisher information of the phase parameter of atomic state is studied in consideration of vacuum fluctuations. Our results show that the teleported information is determined by the wavelength of the atoms as well as the distance of teleportation. When the wavelength of the atoms is much smaller than the teleportation distance, the teleported information decays with time and the decay rates are determined by the spontaneous emission rate of the atoms. However, when the wavelength of the atoms is much larger than the teleportation distance, the teleported information remains unchanged with time. The information of the phase parameter of atomic state has been absolutely transmitted.

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“…The optimal teleportation schemes over mix states become an extensively investigated topic. Since the environment will cause the indirect correlations as well as the decoherence of the quantum systems, [19][20][21][22][23][24][25] the correlations of the quantum systems will be generated, only to disappear soon after. Qubits in separable state, instead of the entangled state, [18] are held by several parties initially.…”

Section: Introductionmentioning

confidence: 99%

Transmission of Quantum Fisher Information through Fluctuating Quantum Fields

Jin

2018

Annalen der Physik

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Transmission of quantum Fisher information (QFI) of initially disentangled parties is studied and the results show that the indirect correlations generated by the environment, which is considered as a bath of fluctuating quantum fields, will help transmit the quantum information. Specifically, using N initially disentangled atoms-one in an excited state carried by one party (the sender, Alice) and the other in the ground state carried by the other parties (the receivers: Bob1, Bob2, . . . , Bob(N−1)), the phase factor of the state of another atom held by Alice can be transmitted from Alice to Bob with proper time. The transmitted QFI of the phase factor for each receiver has been calculated as a function of the transmitted distance as well as the measurement time and is found to be in relation with the concurrence of the pair of atoms that the sender and the receiver carry. For each transmitted distance, there exists an optimal measurement time to obtain the maximal transmitted QFI, which is in relation with the total number of receivers.

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Entanglement dynamics for uniformly accelerated two-level atoms

Cited by 84 publications

References 38 publications

Radiative processes of uniformly accelerated entangled atoms

Radiative processes of uniformly accelerated entangled atoms

The effects of vacuum fluctuations on teleportation of quantum Fisher information

Transmission of Quantum Fisher Information through Fluctuating Quantum Fields

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