Nonlocality for two particles without inequalities for almost all entangled states

Hardy, Lucién

doi:10.1103/physrevlett.71.1665

Cited by 714 publications

(910 citation statements)

References 16 publications

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“…We note that nonmaximally entangled states have specific applications that are not accessible to maximally entangled states, see e.g. [Har93] and [GMR + 13].…”

Section: Resultsmentioning

confidence: 99%

Manipulating Frequency Entangled Photons

Olislager

Cussey²,

Nguyễn

et al. 2010

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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Serge, un immense merci pour m'avoir guidé tout au long de ces années, avec un équilibre parfait entre encadrement et liberté. Merci pour tes conseils avisés, ton éclectisme, ton enthousiasme. Merci pour les agréables moments en ta compagnie. Je ne comprends toujours pas comment tu peux annoncer 90% du temps "poker" tout en en faisant une stratégie gagnante.Philippe, un tout grand merci de m'avoir "ouvert les portes du laboratoire" et pour la confiance que tu m'as témoignée. Merci de faire régner la bonne ambiance au sein d'OPÉRA et pour ta gestion des dossiers kilométriques que ma thèse en co-tutelle a notamment imposés.Jean-Marc, merci pour ton expertise dans la manipulation de photons en fréquence. Tes connaissances au laboratoire, tes ressources et ta disponibilité ont grandement facilité les débuts de ma thèse. Rien n'aurait été possible sans toi.Kien, merci pour ton incroyable taux de génération de nouvelles idées (en particulier celle qui a initié ma thèse) et pour ton aide au jour le jour. Grâce à toi, je sais (presque correctement) faire des soudures électriques.Jean-Marc et Kien, je me souviendrai longtemps de notre première semaine de manipulations à Bruxelles. Merci aussi Johann pour cette chouette expérience d'insomnies scientifiques.Les mois passés à Besançon furent passionnants scientifiquement et agréables humainement. Qui a dit qu'il ne faisait jamais beau dans cette ville? Ismaël, merci pour tout le temps partagé autour d'une PublicationsThe present thesis is based on the following publications. IntroductionIn the twentieth century, the founding fathers of quantum mechanics explored the implications of their theory by designing gedanken experiments. In recent years, continuous improvement of the experimental manipulation of individual quantum systems has opened the way to exciting research, both on blackboards and in laboratories, and even towards field experiments.From the fundamental point of view, this progress allows to test the intrinsic quantum nature of microscopic systems, and how this connects to other scientific fields, such as metrology [GLM06]. Many of the gedanken experiments have now been performed experimentally. This includes tests of wave-particle duality, wave-function collapse, quantum nonlocality, etc.[Zei99, BLS + 13, Gis14]In a more applied direction, the manipulation of individual quantum systems is the basis for quantum information processing: when an information content is associated with transformations and measurements of quantum systems, it offers a new paradigm, full of potentialities, to information theory. This leads to quantum random number generation, quantum computing, quantum communication, including quantum teleportation and quantum cryptography, etc.[NC10]One of the promises of quantum information is the realization of a quantum internet [Kim08]: quantum communication links would allow to share quantum states between the nodesquantum computers-of the network [GT07]. Quantum cryptography and quantum teleportation would open the way to absolutely secure tr...

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“…We note that nonmaximally entangled states have specific applications that are not accessible to maximally entangled states, see e.g. [Har93] and [GMR + 13].…”

Section: Resultsmentioning

confidence: 99%

Manipulating Frequency Entangled Photons

Olislager

Cussey²,

Nguyễn

et al. 2010

Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering

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“…However, the validity of (EQC) is questioned in [14] where it is shown to be responsible for the inconsistency between quantum mechanics and locality claimed by the non-locality theorems of Hardy [21], of Greenberger, Horne, Shimony and Zeilinger [22] and of Bell [3]; moreover, the quoted inconsistency is proved to disappear if (sEQC) replaces (EQC).…”

Section: The Criterion Of Reality and The Experiments Of Einstein Podmentioning

confidence: 99%

Simultaneous Elements of Reality for Incompatible Properties by Exploiting Locality

Sestito

2013

Found Phys

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We show that the extensions of quantum correlations stemming from a strict interpretation of the criterion of reality of Einstein, Podolsky and Rosen raise the inadequacy of their ideal experiment for the assignment of simultaneous elements of reality to two incompatible properties. Then, we suggest a different physical situation enabling the simultaneous assignment of objective values of two incompatible observables of a spin particle by means of measurements of two compatible properties of a second correlated spin particle.

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“…2 below, based upon a particular (classical) example. Stapp's criticism in [1] uses a quantum state introduced by Hardy [8]. That state and some associated measurements are presented in Sec.…”

Section: Introductionmentioning

confidence: 99%

Quantum Counterfactuals and Locality

Griffiths

2012

Found Phys

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Stapp's counterfactual argument for quantum nonlocality based upon a Hardy entangled state is shown to be flawed. While he has correctly analyzed a particular framework using the method of consistent histories, there are alternative frameworks which do not support his argument. The framework dependence of quantum counterfactual arguments, with analogs in classical counterfactuals, vitiates the claim that nonlocal (superluminal) influences exist in the quantum world. Instead it shows that counterfactual arguments are of limited use for analyzing these questions.

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Nonlocality for two particles without inequalities for almost all entangled states

Cited by 714 publications

References 16 publications

Manipulating Frequency Entangled Photons

Manipulating Frequency Entangled Photons

Simultaneous Elements of Reality for Incompatible Properties by Exploiting Locality

Quantum Counterfactuals and Locality

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