Witnesses of non-classicality for simulated hybrid quantum systems
The task of testing whether quantum theory applies to all physical systems and all scales requires considering situations where a quantum probe interacts with another system that need not obey quantum theory in full. Important examples include the cases where a quantum mass probes the gravitational...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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IOP Publishing
2020
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| _version_ | 1797100958050680832 |
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| author | Jones, JA Bhole, G Marletto, C Vedral, V |
| author_facet | Jones, JA Bhole, G Marletto, C Vedral, V |
| author_sort | Jones, JA |
| collection | OXFORD |
| description | The task of testing whether quantum theory applies to all physical systems and all scales requires considering situations where a quantum probe interacts with another system that need not obey quantum theory in full. Important examples include the cases where a quantum mass probes the gravitational field, for which a unique quantum theory of gravity does not yet exist, or a quantum field, such as light, interacts with a macroscopic system, such as a biological molecule, which may or may not obey unitary quantum theory. In this context a class of experiments has recently been proposed, where the non-classicality of a physical system that need not obey quantum theory (the gravitational field) can be tested indirectly by detecting whether or not the system is capable of entangling two quantum probes. Here we illustrate some of the subtleties of the argument, to do with the role of locality of interactions and of non-classicality, and perform proof-of-principle experiments illustrating the logic of the proposals, using a Nuclear Magnetic Resonance quantum computational platform with four qubits. |
| first_indexed | 2024-03-07T05:45:07Z |
| format | Journal article |
| id | oxford-uuid:e6f7b911-38e7-4086-8b37-8a34a97a1b7d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:45:07Z |
| publishDate | 2020 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:e6f7b911-38e7-4086-8b37-8a34a97a1b7d2022-03-27T10:34:58ZWitnesses of non-classicality for simulated hybrid quantum systemsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e6f7b911-38e7-4086-8b37-8a34a97a1b7dEnglishSymplectic ElementsIOP Publishing2020Jones, JABhole, GMarletto, CVedral, VThe task of testing whether quantum theory applies to all physical systems and all scales requires considering situations where a quantum probe interacts with another system that need not obey quantum theory in full. Important examples include the cases where a quantum mass probes the gravitational field, for which a unique quantum theory of gravity does not yet exist, or a quantum field, such as light, interacts with a macroscopic system, such as a biological molecule, which may or may not obey unitary quantum theory. In this context a class of experiments has recently been proposed, where the non-classicality of a physical system that need not obey quantum theory (the gravitational field) can be tested indirectly by detecting whether or not the system is capable of entangling two quantum probes. Here we illustrate some of the subtleties of the argument, to do with the role of locality of interactions and of non-classicality, and perform proof-of-principle experiments illustrating the logic of the proposals, using a Nuclear Magnetic Resonance quantum computational platform with four qubits. |
| spellingShingle | Jones, JA Bhole, G Marletto, C Vedral, V Witnesses of non-classicality for simulated hybrid quantum systems |
| title | Witnesses of non-classicality for simulated hybrid quantum systems |
| title_full | Witnesses of non-classicality for simulated hybrid quantum systems |
| title_fullStr | Witnesses of non-classicality for simulated hybrid quantum systems |
| title_full_unstemmed | Witnesses of non-classicality for simulated hybrid quantum systems |
| title_short | Witnesses of non-classicality for simulated hybrid quantum systems |
| title_sort | witnesses of non classicality for simulated hybrid quantum systems |
| work_keys_str_mv | AT jonesja witnessesofnonclassicalityforsimulatedhybridquantumsystems AT bholeg witnessesofnonclassicalityforsimulatedhybridquantumsystems AT marlettoc witnessesofnonclassicalityforsimulatedhybridquantumsystems AT vedralv witnessesofnonclassicalityforsimulatedhybridquantumsystems |