20051101
Efficient evaluation of decoherence rates in complex Josephson circuits IBM Watson Theoretical analysis of the variables contributing to decoherence in Josephson flux qubits has led to order-of-magnitude extensions of coherence time in these circuits over recent years, assisting in both the design phase and control parameter optimization for increasingly-complex qubit circuitry. In cond-mat 0510843, DiVincenzo, Brito and Koch perform a complete quantitative analysis of the decoherence properties of a Josephson flux qubit, exploring relaxation and dephasing times from two different control circuits along an optimal line in the space of applied fluxes.
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