Controlled-NOT logic with nonresonant Josephson phase qubits

Abstract

We establish theoretical bounds on qubit detuning for high fidelity controlled-NOT logic gate implementations with weakly coupled Josephson phase qubits. It is found that the value of qubit detuning during the entangling pulses must not exceed 2g for two-step, and g for single-step control sequences, where g is the relevant coupling constant.

7 pages, 4 figures

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Cited by in corpus (6)

• Synthesis of Multivalued Quantum Logic Circuits by Elementary Gates
• Toolbox of resonant quantum gates in Circuit QED
• Quantum information processing on nitrogen-vacancy ensembles with the local resonance assisted by circuit QED
• Quantum logic with weakly coupled qubits
• Controlled-NOT gate with weakly coupled qubits: Dependence of fidelity on the form of interaction
• Controlled-NOT logic gate for phase qubits based on conditional spectroscopy