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Theoretical description and experimental simulation of quantum entanglement near open time-like curves via pseudo-density operators

Abstract:

Closed timelike curves are striking predictions of general relativity allowing for time-travel. They are afflicted by notorious causality issues (e.g. grandfather's paradox). Quantum models where a qubit travels back in time solve these problems, at the cost of violating quantum theory's linearity-leading e.g. to universal quantum cloning. Interestingly, linearity is violated even by open timelike curves (OTCs), where the qubit does not interact with its past copy, but is initially entangled ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s41467-018-08100-1

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
ORCID:
0000-0002-2690-4433
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Sub department:
Atomic & Laser Physics
Oxford college:
Wolfson College
Role:
Author
Publisher:
Springer Nature Publisher's website
Journal:
Nature Communications Journal website
Volume:
10
Article number:
182
Publication date:
2019-01-14
Acceptance date:
2018-12-07
DOI:
EISSN:
2041-1723
ISSN:
2041-1723
Pmid:
30643140
Language:
English
Pubs id:
pubs:965972
UUID:
uuid:a0b33ab6-042c-41de-adc5-84d52a8b3a60
Local pid:
pubs:965972
Source identifiers:
965972
Deposit date:
2019-02-14

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