Two-qubit gate assisted heat engines

Quantum computing is an emerging field with some promising developments in recent years [1,2]. The major challenge for these technologies is to keep the quantum system isolated. Hence, it becomes important to study the effect of environment on the evolution of quantum systems. This is achieved using open quantum systems formalism. However the validity of different approximations applied to obtain final quantum master equation, depends on the parameter regime of interest [3]. In this work, we consider a CR-gate in the presence of environment. We study and compare different parameter regimes using appropriate framework [4,5].

[1] Jaseung Ku, Xuexin Xu, Markus Brink, David C. McKay, JaredB. Hertzberg, Mohammad H. Ansari, B.L.T. Plourde, Suppression of Unwanted ZZ Interactions in a Hybrid Two-Qubit System, Phys.Rev. Lett. 125, 200504 (2020), arXiv:2003.02775

[2] Xuexin Xu, M. Ansari, Parasitic-Free Gate: An Error-ProtectedCross-Resonance Switch in Weakly Tunable Architectures, Phys.Rev. Applied 19, 024057, arXiv:2212.05519

[3] Gal Shavit, Baruch Horovitz, and Moshe Goldstein, Bridging between laboratory and rotating-frame master equations for open quantum systems, Phys. Rev. B 100, 195436(2019), arXiv:1907.06945

[4] Mohammad H. Ansari, Yuli V. Nazarov, Rényi entropy flowsfrom quantum heat engines, Phys. Rev. B 91, 104303(2015), arXiv:1408.3910

[5] Mohammad H. Ansari, Alwin van Steensel, Yuli V.Nazarov, Entropy Production in Quantum Is Different, Entropy2019, 21(9), 854 (2019), arXiv:1907.09241