A close up of a computer with a light on top of it

Qubits in quantum computers using superconducting elements are、Consists of a superconducting circuit using Josephson junctions[56][57][58][59]。Charge in superconducting circuit(cooper vs.)qubit with degrees of freedom、charge qubit、またはcooper vs.箱と呼ぶ。In 1999、Nakamura at NEC、Pashkin、Realized by Cai et al.[56]。At the time, the coherence time of a qubit was about 1 nanosecond.。 Superconducting qubit circuit quantum electrodynamics（English Version）developed along with the research of、2004年にはコプレーナ導波路により実装された超伝導共振器とcharge qubitとの強結合が観測されている[60]。Circuit quantum electrodynamics combining resonators and waveguides is、Interactions between superconducting qubits and、It is a very good tool for performing quantum non-destructive measurements.。

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