Quantum Heat Engine Using Electromagnetically Induced Transparency

Zou, Yueyang; Jiang, Yue; Mei, Yefeng; Guo, Xianxin; Du, Shengwang

doi:10.1103/physrevlett.119.050602

Cited by 81 publications

(57 citation statements)

References 16 publications

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“…In addition, the effects of the profound quantum nature of the QHE such as such as cooperativity [27][28][29][30][31], coherence and correlations [32][33][34] on the performance of QHEs have also been investigated. Following the demonstration of a singleion engine cycle [35], genuine QHE experiments have been reported [36] with a single spin in a nuclear magnetic resonance (NMR) set up [36,37], a cold Rb atom [38], and an nitrogen-vacancy (NV) center in diamond [39]. Here we consider finite-time QHEs with single and two-spin working systems subject to shortcuts to adiabaticity.…”

Section: Introductionmentioning

confidence: 99%

Spin quantum heat engines with shortcuts to adiabaticity

Çakmak

Müstecaplıoğlu

2019

Phys. Rev. E

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We consider a finite-time quantum Otto cycle with single and two-spin-1/2 systems as its working medium. In order to mimic adiabatic dynamics at a finite time, we employ a shortcut-to-adiabaticity technique and evaluate the performance of the engine including the cost of the shortcut. We compare our results with the true adiabatic and non-adiabatic performances of the same cycle. Our findings indicate that the use of the shortcutto-adiabaticity scheme significantly enhances the performance of the quantum Otto engine as compared to its adiabatic and non-adiabatic counterparts for different figures of merit. *

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Section: Introductionmentioning

confidence: 99%

Spin quantum heat engines with shortcuts to adiabaticity

Çakmak

Müstecaplıoğlu

2019

Phys. Rev. E

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“…Heat engines that are using working substances requiring quantum mechanical descriptions are called as quantum heat engines (QHEs), whose cycles [16] are studied under a quantum thermodynamical framework, which is an emerging and rapidly progressing field of research [16][17][18][19][20]. Experimental demonstrations of a single-atom heat engine [5] and QHEs with nitrogen-vacancy centers in diamond [21] and with cold Rb atoms [22] have been shown. Typically the working system of the engine remains in a single-phase during a thermodynamic cycle.…”

Section: Introductionmentioning

confidence: 99%

Topological phase transition in quantum-heat-engine cycles

2018

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We explore signatures of a topological phase transition (TPT) in the work and efficiency of a quantum heat engine, which uses a single layer topological insulator, stanene, in an external electric field as a working substance. The magnitude of the electric field controls the trivial and topological insulator phases of the stanene. The effect of TPT is investigated in two types of thermodynamic cycles, with and without adiabatic stages. We examine a quantum Otto cycle for the adiabatic and an idealized Stirling cycle for the non-adiabatic case. In both cycles, investigations are done for high and low temperatures. It is found that Otto cycle can distinguish the critical point of the TPT as an extremum point in the work output with respect to applied fields at all temperatures. Stirling cycle can identify the critical point of the TPT as the maximum work point with respect to the applied fields only at relatively lower temperatures. As temperatures increase towards the room temperature maximum work point of the Stirling cycle shifts away from the critical point of the TPT. In both cycles, increasing the temperature causes considerable enhancement in work and efficiency from the order of meV to eV.

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“…Several intriguing works exist, such as extracting work from a single bath, increase in power aided by noise-induced quantum coherence [15,18], surpassing Carnot efficiency using squeezed versions of thermal baths [19] as well as experimental realization of a Paul trapped single Ca + ion heat engine [20]. QHEs have also been experimentally realized in laser cooled Rb atoms [21] using principles based on electromagnetically induced transparency [22]. Despite the progress, the issue of GP in QHEs have not yet been addressed, both within and beyond the linear response regime of finite-time thermodynamics.…”

Section: Introductionmentioning

confidence: 99%

Geometric phaselike effects in a quantum heat engine

Giri

Goswami

2017

Phys. Rev. E

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By periodically driving the temperature of reservoirs in a quantum heat engine, geometric or Pancharatnam-Berry phase-like (PBp) effects in the thermodynamics can be observed. The PBp can be identified from a generating function (GF) method within an adiabatic quantum Markovian master equation formalism. The GF is shown not to lead to a standard open quantum system's fluctuation theorem in presence of phase-different modulations with an inapplicability in the use of large deviation theory. Effect of quantum coherences in optimizing the flux is nullified due to PBp contributions. The linear coefficient, 1/2, which is universal in the expansion of the efficiency at maximum power in terms of Carnot efficiency no longer holds true in presence of PBp effects.

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Quantum Heat Engine Using Electromagnetically Induced Transparency

Cited by 81 publications

References 16 publications

Spin quantum heat engines with shortcuts to adiabaticity

Spin quantum heat engines with shortcuts to adiabaticity

Topological phase transition in quantum-heat-engine cycles

Geometric phaselike effects in a quantum heat engine

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