Journal
PHYSICAL REVIEW RESEARCH
Volume 2, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.2.033498
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Funding
- H2020-FETOPEN-2018-2020 project TEQ [766900]
- DfE-SFI Investigator Programme [15/IA/2864]
- COST Action [CA15220]
- UK ESPRC [EP/T028106/1]
- Royal Society Wolfson Research Fellowship [RSWF\R3\183013]
- Royal Society International Exchanges Programme [IEC\R2\192220]
- Leverhulme Trust [RGP-2018-266]
- UK EPSRC [EP/T028106/1]
- Angelo Della Riccia Foundation [979]
- MIUR, Rita Levi-Montalcini Fellowship
- EPSRC [EP/T028106/1] Funding Source: UKRI
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The dimensionality of a thermometer is key in the design of quantum thermometry schemes. In general, the phenomenology that is typical of qubit-based quantum thermometry does not apply to infinite-dimensional ones. We analyze the dynamical and metrological features of nonequilibrium Gaussian quantum thermometers: On one hand, we highlight how quantum entanglement can enhance the readiness of composite Gaussian thermometers; on the other hand, we show that nonequilibrium conditions do not guarantee the best sensitivities in temperature estimation, thus suggesting the reassessment of some of the working principles underpinning quantum thermometry.
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