Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of the Quantum Zeno Effect on a Single Solid State Spin   The quantum Zeno effect, i.e. the inhibition of coherent quantum dynamics by
projective measurements is one of the most intriguing predictions of quantum
mechanics. Here we experimentally demonstrate the quantum Zeno effect by
inhibiting the microwave driven coherent spin dynamics between two ground state
spin levels of the nitrogen vacancy center in diamond nano-crystals. Our
experiments are supported by a detailed analysis of the population dynamics via
a semi-classical model.

14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol