期刊
PHYSICAL REVIEW B
卷 82, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.024514
关键词
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资金
- DFG [SFB 631]
- Nanosystems Initiative Munich (NIM)
- Emmy-Noether program
- Elings grant
- UPV/EHU [GIU07/40]
- Spanish MICINN [FIS2009-12773-C02-01]
- Basque Government [IT472-10]
- EuroSQIP
- SOLID European projects
- Swiss NSF
We propose the implementation of fast resonant gates in circuit quantum electrodynamics for quantum information processing. We show how a suitable utilization of three-level superconducting qubits inside a resonator constitutes a key tool to perform diverse two-qubit resonant gates, improving the operation speed when compared to slower dispersive techniques. To illustrate the benefit of resonant two-qubit gates in circuit quantum electrodynamics, we consider the implementation of a two-dimensional cluster state in an array of N x N superconducting qubits by using resonant controlled-phase and one-qubit gates, where the generation time grows linearly with N. For N = 3, and taking into account decoherence mechanisms, a fidelity over 60% for the generation of this cluster state is obtained.
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