$\mathcal{PT}$-symmetric effects in measurement-based quantum thermal
machines
- URL: http://arxiv.org/abs/2302.01181v2
- Date: Fri, 10 Nov 2023 18:17:04 GMT
- Title: $\mathcal{PT}$-symmetric effects in measurement-based quantum thermal
machines
- Authors: Jonas F. G. Santos, Pritam Chattopadhyay
- Abstract summary: Measurement-based quantum thermal machines are fascinating models of thermodynamic cycles.
We consider in this class of cycle $mathcalPT$-symmetric non-Hermitian Hamiltonians.
We present theoretical results indicating that $mathcalPT$-symmetric effects and measurement protocols are related along the cycle.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Measurement-based quantum thermal machines are fascinating models of
thermodynamic cycles where measurement protocols play an important role in the
performance and functioning of the cycle. Despite theoretical advances,
interesting experimental implementations have been reported. Here we move a
step further by considering in this class of cycle $\mathcal{PT}$-symmetric
non-Hermitian Hamiltonians and their implications in quantum thermal machines
fueled by generalized measurements. We present theoretical results indicating
that $\mathcal{PT}$-symmetric effects and measurement protocols are related
along the cycle. Furthermore, tuning the parameters suitably it is possible to
improve the power output (engine configuration) and the cooling rate
(refrigerator configuration), operating in the Otto limit, in a finite-time
cycle that satisfies the quantum adiabatic theorem. Our model also allows
switching the configuration of the cycle, engine, or refrigerator, depending on
the strength of the measurement protocol.
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