Dissipative generation for steady-state entanglement of two transmons in circuit QED

doi:10.1088/1674-1056/28/8/080303

摘要/Abstract

摘要： We present a dissipative scheme to generate an entangled steady-state between two superconducting transmon qutrits separately embedded in two coupled transmission line resonators in a circuit quantum electrodynamics (QED) setup. In our scheme, the resonant qutrit-resonator interaction and photon hopping between resonators jointly induce asymmetric energy gaps in the dressed state subspaces. The coherent driving fields induce the specific dressed state transition and the dissipative processes lead to the gradual accumulation in the population of target state, combination of both drives the system into a steady-state entanglement. Numerical simulation shows that the maximally entangled state can be produced with high fidelity and strong robustness against the cavity decay and qutrit decay, and no requirements for accurate time control. The scheme is achievable with the current experimental technologies.

关键词: steady-state entanglement, dissipation, dressed state

Abstract: We present a dissipative scheme to generate an entangled steady-state between two superconducting transmon qutrits separately embedded in two coupled transmission line resonators in a circuit quantum electrodynamics (QED) setup. In our scheme, the resonant qutrit-resonator interaction and photon hopping between resonators jointly induce asymmetric energy gaps in the dressed state subspaces. The coherent driving fields induce the specific dressed state transition and the dissipative processes lead to the gradual accumulation in the population of target state, combination of both drives the system into a steady-state entanglement. Numerical simulation shows that the maximally entangled state can be produced with high fidelity and strong robustness against the cavity decay and qutrit decay, and no requirements for accurate time control. The scheme is achievable with the current experimental technologies.

Key words: steady-state entanglement, dissipation, dressed state

中图分类号: (Quantum information)

03.67.-a

03.67.Bg (Entanglement production and manipulation) 32.80.Ee (Rydberg states)

何爽, 刘丹, 李明浩. Dissipative generation for steady-state entanglement of two transmons in circuit QED[J]. 中国物理B, 2019, 28(8): 80303-080303.

Shuang He(何爽), Dan Liu(刘丹), Ming-Hao Li(李明浩). Dissipative generation for steady-state entanglement of two transmons in circuit QED[J]. Chin. Phys. B, 2019, 28(8): 80303-080303.

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