A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement
We show that if the ground state entanglement exceeds the total entropy of a given system, then this system is in an entangled state. This is a universal entanglement witness that applies to any physical system and yields a temperature below which we are certain to find some entanglement. Our witnes...
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| Format: | Conference item |
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2009
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| _version_ | 1797064950831644672 |
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| author | Vedral, V |
| author_facet | Vedral, V |
| author_sort | Vedral, V |
| collection | OXFORD |
| description | We show that if the ground state entanglement exceeds the total entropy of a given system, then this system is in an entangled state. This is a universal entanglement witness that applies to any physical system and yields a temperature below which we are certain to find some entanglement. Our witness is then applied to generic bosonic and fermionic many-body systems to derive the corresponding "critical" temperatures that have a very broad validity. © 2009 World Scientific Publishing Company. |
| first_indexed | 2024-03-06T21:21:39Z |
| format | Conference item |
| id | oxford-uuid:41a44219-638d-4762-8f39-6514c1a3cbc1 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:21:39Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:41a44219-638d-4762-8f39-6514c1a3cbc12022-03-26T14:44:52ZA Simple Thermodynamical Witness Showing Universality of Macroscopic EntanglementConference itemhttp://purl.org/coar/resource_type/c_5794uuid:41a44219-638d-4762-8f39-6514c1a3cbc1Symplectic Elements at Oxford2009Vedral, VWe show that if the ground state entanglement exceeds the total entropy of a given system, then this system is in an entangled state. This is a universal entanglement witness that applies to any physical system and yields a temperature below which we are certain to find some entanglement. Our witness is then applied to generic bosonic and fermionic many-body systems to derive the corresponding "critical" temperatures that have a very broad validity. © 2009 World Scientific Publishing Company. |
| spellingShingle | Vedral, V A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title | A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title_full | A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title_fullStr | A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title_full_unstemmed | A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title_short | A Simple Thermodynamical Witness Showing Universality of Macroscopic Entanglement |
| title_sort | simple thermodynamical witness showing universality of macroscopic entanglement |
| work_keys_str_mv | AT vedralv asimplethermodynamicalwitnessshowinguniversalityofmacroscopicentanglement AT vedralv simplethermodynamicalwitnessshowinguniversalityofmacroscopicentanglement |