Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity

Details Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity

2009-08-27

arxiv.org/abs/0908.3937v1

Phys. Rev. B 80 (2009) 214535

Physics

Condensed Matter

Superconductivity

5 pages incl. 5 figures

Scientific paper

10.1103/PhysRevB.80.214535

We propose a superconducting phase qubit on the basis of the radio-frequency SQUID with the screening parameter value $\beta_L = (2\pi/\Phi_0)LI_c \approx 1$, biased by a half flux quantum $\Phi_e=\Phi_0/2$. Significant anharmonicity ($> 30%$) can be achieved in this system due to the interplay of the cosine Josephson potential and the parabolic magnetic-energy potential that ultimately leads to the quartic polynomial shape of the well. The two lowest eigenstates in this global minimum perfectly suit for the qubit which is insensitive to the charge variable, biased in the optimal point and allows an efficient dispersive readout. Moreover, the transition frequency in this qubit can be tuned within an appreciable range allowing variable qubit-qubit coupling.

Affiliated with

Also associated with

No associations

Rating

Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconducting phase qubit based on the Josephson oscillator with strong anharmonicity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-411264