Projective measurement scheme for solid-state qubits

Article

关键词: SINGLE-ELECTRON TRANSISTOR;    PERSISTENT-CURRENT QUBIT;    QUANTUM SUPERPOSITION;    JOSEPHSON-JUNCTIONS;    COMPUTATION;    DECOHERENCE;   

DOI  :  10.1103/PhysRevB.67.220505

来源: SCIE

【 摘 要 】

We present an effective measurement scheme for the solid-state qubits, which does not introduce extra decoherence to the qubits until the measurement is switched on by a resonant pulse. The resonant pulse then maximally entangles the qubit with the detector. The scheme has the feature of being projective, noiseless, and switchable. This method is illustrated on the superconducting persistent-current qubit, but can be applied to the measurement of a wide variety of solid-state qubits, the direct detection of the electromagnetic signals of which gives poor resolution of the qubit states.

【 授权许可】

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