Thermodynamically free quantum measurements
Thermal channels—the free processes allowed in the resource theory of quantum thermodynamics—are generalised to thermal instruments, which we interpret as implementing thermodynamically free quantum measurements; a Maxwellian demon using such measurements never violates the second law of thermodynam...
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| Veröffentlicht in: | Journal of physics. A, Mathematical and theoretical Mathematical and theoretical, 2022-12, Vol.55 (50), p.505304 |
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| container_title | Journal of physics. A, Mathematical and theoretical |
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| creator | Mohammady, M Hamed |
| description | Thermal channels—the free processes allowed in the resource theory of quantum thermodynamics—are generalised to thermal instruments, which we interpret as implementing thermodynamically free quantum measurements; a Maxwellian demon using such measurements never violates the second law of thermodynamics. Further properties of thermal instruments are investigated and, in particular, it is shown that they only measure observables commuting with the Hamiltonian, and they thermalise the measured system when performing a complete measurement, the latter of which indicates a thermodynamically induced information-disturbance trade-off. The demarcation of measurements that are not thermodynamically free paves the way for a resource-theoretic quantification of their thermodynamic cost. |
| doi_str_mv | 10.1088/1751-8121/acad4a |
| format | Article |
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| ispartof | Journal of physics. A, Mathematical and theoretical, 2022-12, Vol.55 (50), p.505304 |
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| subjects | measurement disturbance quantum measurement quantum thermodynamics |
| title | Thermodynamically free quantum measurements |
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