Unruh effect in quantum information beyond the single-mode approximation

Bruschi, David Edward; Louko, Jorma; Martín-Martínez, Eduardo; Dragan, Andrzej; Fuentes, Ivette

doi:10.1103/physreva.82.042332

Cited by 266 publications

(462 citation statements)

References 40 publications

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“…Now, it is well known that for different observers in uniform relative motion the total amount of entanglement is the same in all inertial frames, although they don't agree on the amount of entanglement among various degree of freedom of the system. Also, more recently, quantum entanglement has been studied in relativistic non-inertial frames [9][10][11][12][13][14][15][16][17]. Alsing and Milburn extended the argument to a situation where one observer is uniformly accelerated [9].…”

Section: Introductionmentioning

confidence: 99%

“…It is shown that as a universality principle going beyond this approximation does not modify the way in which Unruh decoherence affects fermionic and bosonic entanglements. Unruh effect is independent of the number of field modes considered in the problem and statistics is the ruler of this process [16]. In tripartite discrete systems, two classes of genuine tripartite entanglement have been discovered, namely, the Greenberger-Horne-Zielinger (GHZ) class [22,23] and the W class [24,25].…”

Section: Introductionmentioning

confidence: 99%

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Tripartite Entanglements in Noninertial Frames

2011

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Entanglement degradation caused by the Unruh effect is discussed for the tripartite GHZ or W states constructed by modes of a non-interacting quantum field viewed by one inertial observer and two uniformly accelerated observers. For fermionic states, the Unruh effect even for infinite accelerations cannot completely remove the entanglement. However, for the bosonic states, the situation is different and the entanglement vanishes asymptotically. Also, the entanglement is studied for the bipartite subsystems. While for the GHZ states all the bipartite subsystems are identically disentangled, for the W states the bipartite subsystems are somewhat entangled, though, this entanglement can be removed for appropriately accelerated observers. Interestingly, logarithmic negativity as a measure for determining the entanglement of one part of the system relative to the other two parts, is not generally the same for different parts. This means that we encounter tripartite systems where each part is differently entangled to the other two parts. * Electronic address: mshj@iaush.ac.ir † Electronic address: ba_nasre@sci.ui.ac.ir ‡ Electronic address: msoltani@phys.ui.ac.ir

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tripartite Entanglements in Noninertial Frames

2011

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“…There occurred an entanglement degradation in such a state by the accelerated motion, which was commonly attributed to the thermalization due to the Unruh effect. Whereas for bosonic modes the entanglement vanished in the infinite acceleration limit [216] there still remained a non-zero residual entanglement in case of (anti-) fermionic modes [217]. So we asked ourself if this residual entanglement could be used for quantum information tasks.…”

Section: B Bell Inequalities In Particle Physicsmentioning

confidence: 99%

Bell’s Universe: A Personal Recollection

Bertlmann

2016

Quantum [Un]Speakables II

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My collaboration and friendship with John Bell is recollected. I will explain his outstanding contributions in particle physics, in accelerator physics, and his joint work with Mary Bell. Mary's work in accelerator physics is also summarized. I recall our quantum debates, mention some personal reminiscences, and give my personal view on Bell's fundamental work on quantum theory, in particular, on the concept of contextuality and nonlocality of quantum physics. Finally, I describe the huge influence Bell had on my own work, in particular on entanglement and Bell inequalities in particle physics and their experimental verification, and on mathematical physics, where some geometric aspects of the quantum states are illustrated.

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“…In beyond single mode approximation, an accelerated detector can detect a mode in both Rindler wedges I and II, therefore there are different right and left components for the single-particle state denoted as Alice [26],…”

Section: Superdense Coding In Beyond Single-mode Approximationmentioning

confidence: 99%

Superdense Coding with Uniformly Accelerated Particle

et al. 2016

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We study superdense coding with uniformly accelerated particle in single mode approximation and beyond single mode approximation. We use four different functions, the capacity of superdense coding, negativity, discord and the probability of success for evaluating the final results. In single mode approximation, all the four functions behave as expected, however in beyond single mode approximation, except the probability of success, the other three functions represent peculiar behaviors at least for special ranges where the beyond single mode approximation is strong.

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Unruh effect in quantum information beyond the single-mode approximation

Cited by 266 publications

References 40 publications

Tripartite Entanglements in Noninertial Frames

Tripartite Entanglements in Noninertial Frames

Bell’s Universe: A Personal Recollection

Superdense Coding with Uniformly Accelerated Particle

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