| Télécharger | - Voir la version finale : Breaking the limits of purification: postselection enhances heat-bath algorithmic cooling (PDF, 1 Mo)
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| DOI | Trouver le DOI : https://doi.org/10.1088/2399-6528/acb414 |
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| Auteur | Rechercher : Goldberg, Aaron Z1Identifiant ORCID : https://orcid.org/0000-0002-3301-7672; Rechercher : Heshami, Khabat1Identifiant ORCID : https://orcid.org/0000-0003-3864-1930 |
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| Affiliation du nom | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Bailleur de fonds | Rechercher : Natural Sciences and Engineering Research Council of Canada |
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| Format | Texte, Article |
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| Sujet | heat bath algorithmic cooling; postselection; quantum refrigeration; quantum thermodynamics; purification |
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| Résumé | Quantum technologies require pure states, which are often generated by extreme refrigeration. Heat-bath algorithmic cooling is the theoretically optimal refrigeration technique: it shuttles entropy from a multiparticle system to a thermal bath, thereby generating a quantum state with a high degree of purity. Here, we show how to surpass this hitherto-optimal technique by taking advantage of a single binary-outcome measurement. Our protocols can create arbitrary numbers of pure quantum states without any residual mixedness by using a recently discovered device known as a quantum switch to put two operations in superposition, with postselection certifying the complete purification. |
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| Date de publication | 2023-01-27 |
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| Maison d’édition | IOP Publishing |
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 75dbc78b-2f43-4ba8-9140-43037cc74f9a |
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| Enregistrement créé | 2023-03-03 |
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| Enregistrement modifié | 2023-03-15 |
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