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Simulation of the spin-boson model with superconducting phase qubit coupled to a transmission line

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Abstract

Based on the rapid experimental developments of circuit QED, we propose a feasible scheme to simulate the spin-boson model with superconducting circuits, which can be used to detect quantum Kosterlitz-Thouless (KT) phase transition. We design the spinboson model by using a superconducting phase qubit coupled to a semi-infinite transmission line, which is regarded as a bosonic reservoir with a continuum spectrum. By tuning the bias current or the coupling capacitance, the quantum KT transition can be directly detected through tomography measurement on the states of the phase qubit. We also estimate the experimental parameters using the numerical renormalization group method.

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Authors and Affiliations

  1. Laboratory of Quantum Information Technology, and School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, 510006, China

    LongBao Yu, ZhengYuan Xue & ShiLiang Zhu

  2. School of Electronic and Information Electronic Engineering, Hefei Normal University, Hefei, 230601, China

    LongBao Yu

  3. Department of Physics, Renmin University of China, Beijing, 100872, China

    NingHua Tong

  4. Department of Physics and Center of Theoretical and Computational Physics, the University of Hong Kong, Pokfulam Road, Hong Kong, China

    ZiDan Wang

Authors
  1. LongBao Yu
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  2. NingHua Tong
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  3. ZhengYuan Xue
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  4. ZiDan Wang
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  5. ShiLiang Zhu
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Correspondence to ShiLiang Zhu.

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Yu, L., Tong, N., Xue, Z. et al. Simulation of the spin-boson model with superconducting phase qubit coupled to a transmission line. Sci. China Phys. Mech. Astron. 55, 1557–1561 (2012). https://doi.org/10.1007/s11433-012-4863-x

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  • DOI: https://doi.org/10.1007/s11433-012-4863-x

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