Quantum State Transfer via Multi‐Passage Landau‐Zener‐Stückelberg Interferometry in a Three‐Qubit System
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS(2020)
摘要
In quantum information processing, it is necessary to transfer quantum state between different systems. Herein, a scheme to transfer quantum state using multi-passage Landau-Zener-Stuckelberg interferometry in three superconducting qubits is proposed. A periodic triangle waveform quickly drives the system across the energy level anticrossing multiple times, inducing multiphoton Rabi oscillations. Using the 0-photon Rabi oscillations, the dynamical quantum state transfer with probability close to 100% is realized. The fidelity of the state transfer is insensitive to local distortion of the driving waveform. This scheme can be extended to a system where multiple qubits are coupled to a frequency-tunable qubit, as a quantum medium. It provides a useful tool for scalable quantum computing.
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关键词
Landau-Zener-Stuckelberg interferometry,quantum state transfer,superconducting qubits
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