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Hacking the Bell te...
Hacking the Bell test using classical light in energy-time entanglement-based quantum key distribution
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- Jogenfors, Jonathan, 1988- (författare)
- Linköpings universitet,Informationskodning,Tekniska högskolan
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- Elhassan, Ashraf Mohamed (författare)
- Stockholms universitet,Fysikum,Physics Department, Stockholm University, Stockholm, Sweden
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- Ahrens, Johan (författare)
- Stockholms universitet,Fysikum,Physics Department, Stockholm University, Stockholm, Sweden
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- Bourennane, Mohamed (författare)
- Stockholms universitet,Fysikum,Physics Department, Stockholm University, Stockholm, Sweden
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- Larsson, Jan-Åke (författare)
- Linköpings universitet,Informationskodning,Tekniska högskolan
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2015
- 2015
- Engelska.
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Ingår i: Science Advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 1:11
- Relaterad länk:
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https://doi.org/10.1...
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https://advances.sci...
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Photonic systems based on energy-time entanglement have been proposed to test local realism using the Bell inequality. A violation of this inequality normally also certifies security of device-independent quantum key distribution (QKD) so that an attacker cannot eavesdrop or control the system. We show how this security test can be circumvented in energy-time entangled systems when using standard avalanche photodetectors, allowing an attacker to compromise the system without leaving a trace. We reach Bell values up to 3.63 at 97.6% faked detector efficiency using tailored pulses of classical light, which exceeds even the quantum prediction. This is the first demonstration of a violation-faking source that gives both tunable violation and high faked detector efficiency. The implications are severe: the standard Clauser-Horne-Shimony-Holt inequality cannot be used to show device-independent security for energy-time entanglement setups based on Franson's configuration. However, device-independent security can be reestablished, and we conclude by listing a number of improved tests and experimental setups that would protect against all current and future attacks of this type.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- fysik
- Physics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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