Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bang-Bang refocusing of a qubit exposed to telegraph noise   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.

20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat
2
The categories of this paper are: math
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The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas