2018
DOI: 10.1103/physreve.98.032121
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Performance of shortcut-to-adiabaticity quantum engines

Abstract: We consider a paradigmatic quantum harmonic Otto engine operating in finite time. We investigate its performance when shortcut-to-adiabaticity techniques are used to speed up its cycle. We compute efficiency and power by taking the energetic cost of the shortcut driving explicitly into account. We analyze in detail three different shortcut methods, counterdiabatic driving, local counterdiabatic driving and inverse engineering. We demonstrate that all three lead to a simultaneous increase of efficiency and powe… Show more

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Cited by 104 publications
(153 citation statements)
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“…It was soon clear that this quantity could not represent all relevant energy flows, which led to the consideration of alternative measures [7]. Several disparate definitions of energy cost have been proposed in the context of quantum thermodynamics to characterize quantum engines and refrigerators [8][9][10][11][12][13][14][15][16][17][18]. These definitions have been systematically formulated in terms of the cycling system (PS) alone.…”
Section: Introductionmentioning
confidence: 99%
“…It was soon clear that this quantity could not represent all relevant energy flows, which led to the consideration of alternative measures [7]. Several disparate definitions of energy cost have been proposed in the context of quantum thermodynamics to characterize quantum engines and refrigerators [8][9][10][11][12][13][14][15][16][17][18]. These definitions have been systematically formulated in terms of the cycling system (PS) alone.…”
Section: Introductionmentioning
confidence: 99%
“…Regardless, one can use the above approach to assess the performance of a quantum Otto-cycle facilitated using a STA, as depicted in figure 1. To this end, and in line with the analysis of [44,45] where the case of the exactly solvable harmonic oscillator was treated, we calculate the efficiency of the cycle…”
Section: Performance Enhanced Otto Cycle With a Soliton Matter Wavementioning
confidence: 99%
“…While these approaches have often centered around non-interacting systems, STAs have also been explored in interacting, nonlinear, and other systems [20][21][22][23][24][25]. Remarkably, STAs have fundamental implications on quantum speed limits (QSL) [26][27][28][29][30], time-energy uncertainty relations (or energy cost) [31][32][33][34][35][36][37][38], and the quantification of the third law of thermodynamics in the context of quantum refrigerators [39,40], which results in intriguing practical applications in heat engines [41][42][43][44][45][46][47].…”
Section: Introductionmentioning
confidence: 99%
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“…The cost for the projective measurement for one qubit is k B T ln 2 [52], which is the same as the cost of classical measurement of one bit. This leads to modified definition of the efficiency [53] as…”
Section: Effect Of Measurementmentioning
confidence: 99%