Quantum speed limit for a three-qubit system in spin-chain environment with multisite interaction |
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Institution: | 1. Department of Physics, Harbin Institute of Technology, Harbin 150001, China;2. Department of Physics, Harbin University, Harbin 150086, China |
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Abstract: | We study the relationship between the quantum speed limit (QSL) time of a three-qubit system, and the quantum phase transitions (QPTs) of a spin-chain environment with the three-spin interaction. We find that the three-spin interaction can effectively manipulate the critical value of the QSL time. It makes the QSL time mark more clearly the quantum phase transition of the one-dimensional spin-chain models, especially the XX model. The dynamical evolution of the QSL time presents a periodic behavior in quantum-critical environment, whereas the three-spin interaction and external magnetic field can destroy this periodicity. |
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Keywords: | Open quantum system Quantum speed limit Spin chain Three-spin interaction |
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