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Brief Communications

Splitting of the energy level of a Josephson-junction qubit with an anharmonic current-phase relation

I. N. Askerzade<sup>ab

a</sup> Department of Computer Engineering, Engineering Faculty of Ankara University, Aziz Kansu Building Tandogan Kampus, 06100, Tandopan, Ankara, Turkey
^b Institute of Physics Azerbaijan Academy of Sciences

Abstract: A Josephson-junction qubit with an anharmonic current-phase relation is studied. An analytical expression for the split of the ground energy level is derived.

Received: 15.09.2010

 English version: Technical Physics, 2011, 56:5, 744–746

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