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Parametric coupling for superconducting qubits
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DOI：10.1103/PhysRevB.73.064512.png)
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Abstract
En 中文
We propose a scheme to couple two superconducting charge or flux qubits biased at their symmetry points with unequal energy splittings. Modulating the coupling constant between two qubits at the sum or difference of their two frequencies allows to bring them into resonance in the rotating frame. Switching on and off the modulation amounts to switching on and off the coupling which can be realized at a nanosecond speed. We discuss various physical implementations of this idea, and find that our scheme can lead to rapid operation of a two-qubit gate.
Keywords:
QUANTUM DYNAMICS
CHARGE QUBITS
FLUX QUBIT
CIRCUIT
STATE
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