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

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 spin- boson model by using a superconducting phase qu...

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Bibliographic Details
Published inScience China. Physics, mechanics & astronomy Vol. 55; no. 9; pp. 1557 - 1561
Main Authors Yu, LongBao, Tong, NingHua, Xue, ZhengYuan, Wang, ZiDan, Zhu, ShiLiang
Format Journal Article
LanguageEnglish
Published Heidelberg SP Science China Press 01.09.2012
Springer Nature B.V
Subjects
Astronomy
Circuits
Classical and Continuum Physics
Computer simulation
Mathematical models
Observations and Techniques
Phase transformations
Phase transitions
Physics
Physics and Astronomy
Quantum electrodynamics
Qubits (quantum computing)
Superconductivity
Transmission lines
Tuning
传输线
模型仿真
玻色子模型
耦合电容
自旋
超导相
重整化群方法
量子比特
quantum phase transition
numerical renormalization group method
superconducting qubit
spin-boson model
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Summary: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 spin- boson 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.
Bibliography:11-5000/N
spin-boson model, superconducting qubit, quantum phase transition, numerical renormalization group method
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 spin- boson 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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SourceType-Scholarly Journals-1
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content type line 23
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-012-4863-x