Critical quantum thermometry and its feasibility in spin systems
In this work, we study temperature sensing with finite-sized strongly correlated systems exhibiting quantum phase transitions. We use the quantum Fisher information (QFI) approach to quantify the sensitivity in the temperature estimation, and apply a finite-size scaling framework to link this sensit...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2022-09-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2022-09-19-808/pdf/ |
| _version_ | 1797995380845051904 |
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| author | Enes Aybar Artur Niezgoda Safoura S. Mirkhalaf Morgan W. Mitchell Daniel Benedicto Orenes Emilia Witkowska |
| author_facet | Enes Aybar Artur Niezgoda Safoura S. Mirkhalaf Morgan W. Mitchell Daniel Benedicto Orenes Emilia Witkowska |
| author_sort | Enes Aybar |
| collection | DOAJ |
| description | In this work, we study temperature sensing with finite-sized strongly correlated systems exhibiting quantum phase transitions. We use the quantum Fisher information (QFI) approach to quantify the sensitivity in the temperature estimation, and apply a finite-size scaling framework to link this sensitivity to critical exponents of the system around critical points. We numerically calculate the QFI around the critical points for two experimentally-realizable systems: the spin-1 Bose-Einstein condensate and the spin-chain Heisenberg XX model in the presence of an external magnetic field. Our results confirm finite-size scaling properties of the QFI. Furthermore, we discuss experimentally-accessible observables that (nearly) saturate the QFI at the critical points for these two systems. |
| first_indexed | 2024-04-11T10:00:40Z |
| format | Article |
| id | doaj.art-806edef9a6ce4852a750c5a0d4f9bcc7 |
| institution | Directory Open Access Journal |
| issn | 2521-327X |
| language | English |
| last_indexed | 2024-04-11T10:00:40Z |
| publishDate | 2022-09-01 |
| publisher | Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| record_format | Article |
| series | Quantum |
| spelling | doaj.art-806edef9a6ce4852a750c5a0d4f9bcc72022-12-22T04:30:26ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2022-09-01680810.22331/q-2022-09-19-80810.22331/q-2022-09-19-808Critical quantum thermometry and its feasibility in spin systemsEnes AybarArtur NiezgodaSafoura S. MirkhalafMorgan W. MitchellDaniel Benedicto OrenesEmilia WitkowskaIn this work, we study temperature sensing with finite-sized strongly correlated systems exhibiting quantum phase transitions. We use the quantum Fisher information (QFI) approach to quantify the sensitivity in the temperature estimation, and apply a finite-size scaling framework to link this sensitivity to critical exponents of the system around critical points. We numerically calculate the QFI around the critical points for two experimentally-realizable systems: the spin-1 Bose-Einstein condensate and the spin-chain Heisenberg XX model in the presence of an external magnetic field. Our results confirm finite-size scaling properties of the QFI. Furthermore, we discuss experimentally-accessible observables that (nearly) saturate the QFI at the critical points for these two systems.https://quantum-journal.org/papers/q-2022-09-19-808/pdf/ |
| spellingShingle | Enes Aybar Artur Niezgoda Safoura S. Mirkhalaf Morgan W. Mitchell Daniel Benedicto Orenes Emilia Witkowska Critical quantum thermometry and its feasibility in spin systems Quantum |
| title | Critical quantum thermometry and its feasibility in spin systems |
| title_full | Critical quantum thermometry and its feasibility in spin systems |
| title_fullStr | Critical quantum thermometry and its feasibility in spin systems |
| title_full_unstemmed | Critical quantum thermometry and its feasibility in spin systems |
| title_short | Critical quantum thermometry and its feasibility in spin systems |
| title_sort | critical quantum thermometry and its feasibility in spin systems |
| url | https://quantum-journal.org/papers/q-2022-09-19-808/pdf/ |
| work_keys_str_mv | AT enesaybar criticalquantumthermometryanditsfeasibilityinspinsystems AT arturniezgoda criticalquantumthermometryanditsfeasibilityinspinsystems AT safourasmirkhalaf criticalquantumthermometryanditsfeasibilityinspinsystems AT morganwmitchell criticalquantumthermometryanditsfeasibilityinspinsystems AT danielbenedictoorenes criticalquantumthermometryanditsfeasibilityinspinsystems AT emiliawitkowska criticalquantumthermometryanditsfeasibilityinspinsystems |