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Josephson-phase qubit without tunneling

M. H. S. Amin·A. Yu. Smirnov·Alec Maassen van den Brink
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Abstract

We show that a complete set of one-bit gates can be realized by coupling the two logical states of a phase qubit to a third level (at higher energy) using microwave pulses. Thus, one can achieve coherent control without invoking any tunneling between the qubit levels. We propose two implementations, using rf-SQUIDs and d-wave Josephson junctions.

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M. H. S. Amin, A. Yu. Smirnov, Alec Maassen van den Brink. 2003-03-05. Josephson-phase qubit without tunneling. https://doi.org/10.1103/physrevb.67.100508

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