Resonant interaction scheme for GHZ state preparation and quantum phase gate with superconducting qubits in a cavity
| Autor: | Xin Liu, Shutian Liu, Qinghong Liao, Yue-Yuan Wang, Guangyu Fang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
Quantum decoherence Physics::Optics General Physics and Astronomy Quantum Physics Resonator Computer Science::Emerging Technologies Greenberger–Horne–Zeilinger state Qubit Quantum mechanics Physics::Accelerator Physics Quantum information Superconducting quantum computing Quantum Microwave cavity |
| Zdroj: | Chinese Physics B. 23:020311 |
| ISSN: | 1674-1056 |
| DOI: | 10.1088/1674-1056/23/2/020311 |
| Popis: | A scheme is proposed to generate GHZ state and realize quantum phase gate for superconducting qubits placed in a microwave cavity. This scheme uses resonant interaction between the qubits and the cavity mode, so that the interaction time is short, which is important in view of decoherence. In particular, the phase gate can be realized simply with a single interaction between the qubits and the cavity mode. With cavity decay being considered, the fidelity and success probability are both very close to unity. |
| Databáze: | OpenAIRE |
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