Berry phase quantum thermometer. (English) Zbl 1451.81251
Summary: We show how the Berry phase can be used to construct a high-precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations.
MSC:
| 81Q70 | Differential geometric methods, including holonomy, Berry and Hannay phases, Aharonov-Bohm effect, etc. in quantum theory |
| 81P15 | Quantum measurement theory, state operations, state preparations |
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