Two Cell Josephson Junction Qubits (Briefing Charts)
Abstract
The basic two cell qubit contains four josephson junctions, two residing on the conductor common to the two cell loops, and one on each loop's perimeter. In the limit of zero inductance the qubit potential is described by two phase variables and two orthogonal external magnetic flux parameters (the symmetric and anti symmetric combinations of external flux). The barrier height of the effective double well potential is controlled by the symmetric external flux and the potential tilt by the anti symmetric flux. We will discuss the effect of non-zero inductance and defects on the qubit energy levels, circulating currents, matrix elements, and on the relaxation and phase decoherence times.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 25, 2007
- Accession Number
- ADA472609
Entities
People
- Stanford P. Yukon
Organizations
- Air Force Research Laboratory