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arxiv: cond-mat/0412452 · v1 · submitted 2004-12-16 · ❄️ cond-mat.mes-hall · cond-mat.supr-con

Bang-Bang refocusing of a qubit exposed to telegraph noise

classification ❄️ cond-mat.mes-hall cond-mat.supr-con
keywords bang-bangnoisepulsesqubitrefocusingtelegraphallowsanalysis
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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.

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