Operation of universal gates in a solid-state quantum computer based on clean Josephson junctions between d-wave superconductors
نویسندگان
چکیده
Alexandre Blais* and Alexandre M. Zagoskin Département de Physique and Centre de Recherche en Physique du Solide, Université de Sherbrooke, Sherbrooke, Québec, Canada J1K 2R1 DWS Inc., 119-1600 West 6th Avenue, Vancouver, British Columbia, Canada V6J 1R3 Physics and Astronomy Department, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1 ~Received 20 May 1999; revised manuscript received 13 July 1999; published 16 March 2000!
منابع مشابه
اتصال جوزفسون بین ابررساناهای دمای بالا با ضریب عبور اختیاری
In this paper, a dc Josephson junction between two singlet superconductors (d-wave and s-wave) with arbitrary reflection coefficient has been investigated theoretically. For the case of high Tc superconductors, the c-axes are parallel to an interface with finite transparency and their ab-planes have a mis-orientation. The physics of potential barrier will be demonstrated by a transparency coeff...
متن کاملUniversal quantum gates based on both geometric and dynamic phases in quantum dots
Quantum computation has been demonstrated to be more powerful than classical computation by the algorithm of the prime factoring of an integer. Recently great interest has been sparked into the research of quantum computation. One of the focus points is how to construct an experimentally feasible quantum computer to do quantum computation task. A universal set of quantum gates, composed of two ...
متن کاملبررسی تحلیلی چگالی حالتهای موضعی در پیوندگاه جوزفسون بین ابررساناهای دمای بالا (D-I-D)
In this paper, the density of states (DOS) of a planar d-wave Josephson junction is studied analytically. Two high temperature superconductors are separated by an interface with finite transparency coefficient. The c-axes are parallel to the interface and ab-axes have a mis-orientation. The tunneling occurs via the interface because of phase difference between superconducting bulks. The effec...
متن کاملProtected qubit based on a superconducting current mirror
We propose a qubit implementation based on exciton condensation in capacitively coupled Josephson junction chains. The qubit is protected in the sense that all unwanted terms in its effective Hamiltonian are exponentially suppressed as the chain length increases. We also describe an implementation of a universal set of quantum gates. Most gates also offer exponential error suppression. The only...
متن کاملSe p 20 06 Protected qubit based on a superconducting current mirror
We propose a qubit implementation based on exciton condensation in capacitively coupled Josephson junction chains. The qubit is protected in the sense that all unwanted terms in its effective Hamiltonian are exponentially suppressed as the chain length increases. We also describe an implementation of a universal set of quantum gates. Most gates also offer exponential error suppression. The only...
متن کامل