Controlled-NOT logic gate for phase qubits based on conditional spectroscopy

Details Controlled-NOT logic gate for phase qubits based on conditional spectroscopy Controlled-NOT logic gate for phase qubits based on conditional spectroscopy

2011-02-02

arxiv.org/abs/1102.0353v2

Quantum Inf. Proc. , 2011

Physics

Quantum Physics

5 pages, 5 figures, To appear in Quantum Inf. Proc

Scientific paper

10.1007/s11128-011-0274-6

A controlled-NOT logic gate based on conditional spectroscopy has been demonstrated recently for a pair of superconducting flux qubits [Plantenberg et al., Nature 447, 836 (2007)]. Here we study the fidelity of this type of gate applied to a phase qubit coupled to a resonator (or a pair of capacitively coupled phase qubits). Our results show that an intrinsic fidelity of more than 99% is achievable in 45ns.

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