Harvesting large scale entanglement in de Sitter space with multiple detectors

Shingo Kukita; Yasusada Nambu

doi:10.3390/e19090449

Harvesting large scale entanglement in de Sitter space with multiple detectors

Shingo Kukita, Yasusada Nambu

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

We consider entanglement harvesting in de Sitter space using a model of multiple qubit detectors. We obtain the formula of the entanglement negativity for this system. Applying the obtained formula, we find that it is possible to access to the entanglement on the super horizon scale if a sufficiently large number of detectors are prepared. This result indicates the effect of the multipartite entanglement is crucial for detection of large scale entanglement in de Sitter space.

Original language	English
Article number	449
Journal	Entropy
Volume	19
Issue number	9
DOIs	https://doi.org/10.3390/e19090449
Publication status	Published - Sept 1 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.3390/e19090449

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title = "Harvesting large scale entanglement in de Sitter space with multiple detectors",

abstract = "We consider entanglement harvesting in de Sitter space using a model of multiple qubit detectors. We obtain the formula of the entanglement negativity for this system. Applying the obtained formula, we find that it is possible to access to the entanglement on the super horizon scale if a sufficiently large number of detectors are prepared. This result indicates the effect of the multipartite entanglement is crucial for detection of large scale entanglement in de Sitter space.",

author = "Shingo Kukita and Yasusada Nambu",

note = "Funding Information: Acknowledgments: We would like to thank S. Ishizaka for informing us monogamy relation of negativity for qubit system. This work was supported in part by the JSPS KAKENHI Grant Number 16H01094. Publisher Copyright: {\textcopyright} 2017 by the authors.",

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N1 - Funding Information: Acknowledgments: We would like to thank S. Ishizaka for informing us monogamy relation of negativity for qubit system. This work was supported in part by the JSPS KAKENHI Grant Number 16H01094. Publisher Copyright: © 2017 by the authors.

PY - 2017/9/1

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N2 - We consider entanglement harvesting in de Sitter space using a model of multiple qubit detectors. We obtain the formula of the entanglement negativity for this system. Applying the obtained formula, we find that it is possible to access to the entanglement on the super horizon scale if a sufficiently large number of detectors are prepared. This result indicates the effect of the multipartite entanglement is crucial for detection of large scale entanglement in de Sitter space.

AB - We consider entanglement harvesting in de Sitter space using a model of multiple qubit detectors. We obtain the formula of the entanglement negativity for this system. Applying the obtained formula, we find that it is possible to access to the entanglement on the super horizon scale if a sufficiently large number of detectors are prepared. This result indicates the effect of the multipartite entanglement is crucial for detection of large scale entanglement in de Sitter space.

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Harvesting large scale entanglement in de Sitter space with multiple detectors

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