Effects of nuclear spins on the coherent evolution of a phase qubit

Details Effects of nuclear spins on the coherent evolution of a phase qubit Effects of nuclear spins on the coherent evolution of a phase qubit

2000-11-14

arxiv.org/abs/cond-mat/0011248v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

24 pages, RevTeX

Scientific paper

10.1088/0953-8984/13/48/327

The role of nuclear spins in decoherence and dephasing of a solid state phase
qubit is investigated. Both effects of static spin environment and spin
polarization fluctuations in time are considered on the basis of non-Markovian
Langevin-Bloch equations. We find conditions when coupling of a phase qubit to
a bath of nuclear spins does not impair coherent evolution of the qubit.

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