2004/12/16 by H. Gutmann, F. K. Wilhelm, W. M. Kaminsky +1
Physics and Astronomy · #cond-mat.mes-hall #cond-mat.supr-con
published as Quantum Information Processing, Vol. 3, 247 (2004)
arxiv created 2004/12/16 · arxiv updated 2009/12/01
We investigate the decoherence effect of telegraph noise on a single qubit, usually provoked by bistable fluctuators. To diminish the dephasing and relaxation impact an effective refocusing scheme (so-called Bang-Bang pulses) is proposed. Detailed numerical as well as analytical random walk analysis allows in particular to evaluate the applicability of non-perfect Bang-Bang pulses.