Open Ising model perturbed by classical colored noise

• Main Authors: Yu, Deshui, Dumke, Rainer
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2020
• Subjects: Science::Physics; Quantum Master Equation; Superconducting Quantum Optics
• Online Access: https://hdl.handle.net/10356/141953
• Institution: Nanyang Technological University

We investigate the non-Markovian dynamics of an open Ising model simulated by a superconducting circuit. The quantum many-body system is weakly coupled to a white, pink- or blue-colored environment. The relaxation of the system in the strong interqubit interaction regime shows a metastable behavior. In comparison with the dissipative system in the Markovian limit, the negative memory of the blue-colored noise weakens the system's relaxation. However, for the pink-colored noise the relaxation rate of the system is enhanced due to the positive memory effect. The understanding of quantum many-body systems responding to different colored noise fields is necessary for designing the environment of superconducting qubits in a large scale quantum processor.