Long-range interacting quantum devices provides a promising route for quantum technology applications. Here, the presence of long-range interactions is shown to enhance the performances of a quantum heat engine featuring a many-body working substance. We focus on the paradigmatic example of a Kitaev chain undergoing a quantum Otto cycle and show that a substantial thermodynamic advantage may be achieved as the range of the interactions among its constituents increases. The advantage is most significant for the realistic situation of a finite time cycle: the presence of long-range interactions reduces the non-adiabatic energy losses, by suppressing the detrimental effects of dynamically generated excitations. This effect allows mitigating the trade-off between power and efficiency, paving the way for a wide range of experimental and technological applications.

Quantum heat engine with long-range advantages / Solfanelli, Andrea; Giachetti, Guido; Campisi, Michele; Ruffo, Stefano; Defenu, Nicolò. - In: NEW JOURNAL OF PHYSICS. - ISSN 1367-2630. - 25:3(2023), pp. 1-26. [10.1088/1367-2630/acc04e]

Quantum heat engine with long-range advantages

Andrea Solfanelli;Guido Giachetti;Michele Campisi;Stefano Ruffo;Nicolò Defenu
2023-01-01

Abstract

Long-range interacting quantum devices provides a promising route for quantum technology applications. Here, the presence of long-range interactions is shown to enhance the performances of a quantum heat engine featuring a many-body working substance. We focus on the paradigmatic example of a Kitaev chain undergoing a quantum Otto cycle and show that a substantial thermodynamic advantage may be achieved as the range of the interactions among its constituents increases. The advantage is most significant for the realistic situation of a finite time cycle: the presence of long-range interactions reduces the non-adiabatic energy losses, by suppressing the detrimental effects of dynamically generated excitations. This effect allows mitigating the trade-off between power and efficiency, paving the way for a wide range of experimental and technological applications.
2023
25
3
1
26
033030
10.1088/1367-2630/acc04e
https://iopscience.iop.org/article/10.1088/1367-2630/acc04e/meta
https://arxiv.org/abs/2208.09492
Solfanelli, Andrea; Giachetti, Guido; Campisi, Michele; Ruffo, Stefano; Defenu, Nicolò
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/132093
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