Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zeno and anti-Zeno polarization control of spin-ensembles by induced
  dephasing   We experimentally and theoretically demonstrate the purity (polarization)
control of qubits entangled with multiple spins, using induced dephasing in
nuclear magnetic resonance (NMR) setups to simulate repeated quantum
measurements. We show that one may steer the qubit ensemble towards a
quasi-equilibrium state of certain purity, by choosing suitable time intervals
between dephasing operations. These results demonstrate that repeated dephasing
at intervals associated with the anti-Zeno regime lead to ensemble
purification, whereas those associated with the Zeno regime lead to ensemble
mixing.

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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: chem-ph
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The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
1
The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ