Erratum: Arbitrarily Loss-Tolerant Einstein-Podolsky-Rosen Steering Allowing a Demonstration over 1 km of Optical Fiber with No Detection Loophole [Phys. Rev. X<b>2</b>, 031003 (2012)]

Bennet, Adam; Evans, D. A.; Saunders, D. J.; Branciard, Cyril; Cavalcanti, Eric G.; Wiseman, Howard M.; Pryde, Geoff J.

doi:10.1103/physrevx.6.019902

Cited by 34 publications

(79 citation statements)

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“…In doing so, we demonstrate a method for optimising similar tests of EPR-steering, and show that the optimal measurement strategies for such an experiment are just as practicable, significantly more more loss-tolerant in some regimes, and are (unlike those used in Ref. [15]) applicable for an arbitrary number of different measurements by Alice.…”

Section: Introductionmentioning

confidence: 99%

“…The ability of an entangled quantum state to nonlocally affect another (though not necessarily vice versa [10][11][12]; see also [27]) has come to be known as EPR-steering [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Another closed the detection loophole with only two different measurements (as in the original EPR scenario) by employing state-of-the-art transition edge detectors [20]. The remaining paper closed the detection loophole using commonplace photon detectors while also enduring the losses of transmitting the measured photons through an arXiv:1404.5707v2 [quant-ph] 4 Aug 2014 extra kilometre of fibre-optic cable [15].…”

Section: Introductionmentioning

confidence: 99%

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Optimal measurements for tests of Einstein-Podolsky-Rosen steering with no detection loophole using two-qubit Werner states

Evans

Wiseman

2014

Phys. Rev. A

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It has been shown in earlier works that the vertices of Platonic solids are good measurement choices for tests of Einstein-Podolsky-Rosen (EPR)-steering using isotropically entangled pairs of qubits. Such measurements are regularly spaced, and measurement diversity is a good feature for making EPR-steering inequalities easier to violate in the presence of experimental imperfections. However, such measurements are provably suboptimal. Here, we develop a method for devising optimal strategies for tests of EPR-steering, in the sense of being most robust to mixture and inefficiency (while still closing the detection loophole, of course), for a given number n of measurement settings. We allow for arbitrary measurement directions, and arbitrary weightings of the outcomes in the EPR-steering inequality. This is a difficult optimisation problem for large n, so we also consider more practical ways of constructing near-optimal EPR-steering inequalities in this limit.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimal measurements for tests of Einstein-Podolsky-Rosen steering with no detection loophole using two-qubit Werner states

Evans

Wiseman

2014

Phys. Rev. A

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“…Unconditional security is possible provided there is an observation of a loopholefree Bell inequality violation. During the last years there have been important advances towards this accomplishment [15][16][17][18][19][20][21][22][23]. In this work we present another step towards fiber-based loophole-free Bell tests, which are specially relevant for device-independent quantum communication due to the existing optical telecommunication networks.…”

Section: Fig 2 (Color Online)mentioning

confidence: 99%

“…However, if loopholes are present in the experimental implementation, security can no longer be guaranteed [14]. Although considerable progress has taken place in the last few years, and Bell inequality violations have been observed free of some loopholes [15][16][17][18][19][20][21][22][23], the goal of a violation free of all loopholes is still missing.…”

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confidence: 99%

Postselection-Loophole-Free Bell Test Over an Installed Optical Fiber Network

et al. 2015

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Device-independent quantum communication will require a loophole-free violation of Bell inequalities. In typical scenarios where line of sight between the communicating parties is not available, it is convenient to use energy-time entangled photons due to intrinsic robustness while propagating over optical fibers. Here we show an energy-time Clauser-Horne-Shimony-Holt Bell inequality violation with two parties separated by 3.7 km over the deployed optical fiber network belonging to the University of Concepción in Chile. Remarkably, this is the first Bell violation with spatially separated parties that is free of the postselection loophole, which affected all previous in-field long-distance energy-time experiments. Our work takes a further step towards a fiber-based loophole-free Bell test, which is highly desired for secure quantum communication due to the widespread existing telecommunication infrastructure.

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Analysis of Assumptions in BIG Bell Test Experiments

2020

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Recently, a group of experiments tested local realism with random choices prepared by humans. These various tests were subject to additional assumptions, which lead to loopholes in the interpretations of almost all of the experiments. Among these assumptions are fair sampling, no signaling, and faithful reproduction of a Bell-type quantum model. The data from 9 of 13 experiments were examined and occurring anomalies were analyzed in view of the above assumptions. It is concluded that further tests of local realism need better setup calibration to avoid apparent signaling or necessity of the complicated underlying quantum model.

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Erratum: Arbitrarily Loss-Tolerant Einstein-Podolsky-Rosen Steering Allowing a Demonstration over 1 km of Optical Fiber with No Detection Loophole [Phys. Rev. X2, 031003 (2012)]

Cited by 34 publications

References 0 publications

Optimal measurements for tests of Einstein-Podolsky-Rosen steering with no detection loophole using two-qubit Werner states

Optimal measurements for tests of Einstein-Podolsky-Rosen steering with no detection loophole using two-qubit Werner states

Postselection-Loophole-Free Bell Test Over an Installed Optical Fiber Network

Analysis of Assumptions in BIG Bell Test Experiments

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