6 papers
Performance bounds of non-adiabatic quantum harmonic Otto engine and refrigerator under a squeezed thermal reservoir
Varinder Singh, Özgür E. Müstecaplıoğlu
We analyze the performance of a quantum Otto cycle, employing time-dependent harmonic oscillator as the working fluid undergoing sudden expansion and compression strokes during the…
Optimal operation of a three-level quantum heat engine and universal nature of efficiency
Varinder Singh
We present a detailed study of a three-level quantum heat engine operating at maximum efficient power function, a trade-off objective function defined by the product of the efficie…
Optimal Performance of a Three-level Quantum Refrigerator
Varinder Singh, Tanmoy Pandit, Ramandeep S. Johal
We study the optimal performance of a three-level quantum refrigerator using two different objective functions: cooling power and -function. For both cases, we obtain general ex…
Three-level laser heat engine at optimal performance with ecological function
Varinder Singh, Ramandeep S. Johal
Although classical and quantum heat engines work on entirely different fundamental principles, there is an underlying similarity. For instance, the form of efficiency at optimal pe…
Low-dissipation Carnot-like heat engines at maximum efficient power
Varinder Singh, Ramandeep S. Johal
We study the optimal performance of Carnot-like heat engines working in low dissipation regime using the product of the efficiency and the power output, also known as the efficient…
Feynman-Smoluchowski engine at high temperatures and the role of constraints
Varinder Singh, Ramandeep S. Johal
Feynman's ratchet and pawl is a paradigmatic model for energy conversion using thermal fluctuations in the mesoscopic regime. Here, we optimize the power output of the ratchet as a…