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Photonic phase transition in circuit quantum electrodynamics lattices coupled to superconducting phase qubits

Photonic phase transition in circuit quantum electrodynamics lattices coupled to superconducting phase qubits
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摘要 A hybrid quantum architecture was proposed to engineer a localization-delocalization phase transition of light in a two-dimension square lattices of superconducting coplanar waveguide resonators,which are interconnected by current-biased Josephson junction phase qubits.We find that the competition between the on-site repulsion and the nonlocal photonic hopping leads to the Mott insulator-superfluid transition.By using the mean-field approach and the quantum master equation,the phase boundary between these two different phases could be obtained when the dissipative effects of superconducting resonators and phase qubit are considered.The good tunability of the effective on-site repulsion and photon-hopping strengths enable quantum simulation on condensed matter physics and many-body models using such a superconducting resonator lattice system.The experimental feasibility is discussed using the currently available technology in the circuit QED. A hybrid quantum architecture was proposed to engineer a localization-delocalization phase transition of light in a two-dimension square lattices of superconducting coplanar waveguide resonators,which are interconnected by current-biased Josephson junction phase qubits.We find that the competition between the on-site repulsion and the nonlocal photonic hopping leads to the Mott insulator-superfluid transition.By using the mean-field approach and the quantum master equation,the phase boundary between these two different phases could be obtained when the dissipative effects of superconducting resonators and phase qubit are considered.The good tunability of the effective on-site repulsion and photon-hopping strengths enable quantum simulation on condensed matter physics and many-body models using such a superconducting resonator lattice system.The experimental feasibility is discussed using the currently available technology in the circuit QED.
出处 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第11期2092-2097,共6页 中国科学:物理学、力学、天文学(英文版)
基金 supported by the National Science Foundation of China(Grant Nos.11372122,10874122 and 11074070) the Program for Excellent Talents at the University of Guangdong Province(Guangdong Teacher Letter[1010]No.79)
关键词 hopping resonator waveguide junction engineer currently insulator enable photonic condensed 超导谐振器 正方形晶格 量子比特 相变耦合 量子电动力学 相位 光子 电路
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