Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: All-optical control of the silicon-vacancy spin in diamond at
  millikelvin temperatures   The silicon-vacancy center in diamond offers attractive opportunities in
quantum photonics due to its favorable optical properties and optically
addressable electronic spin. Here, we combine both to achieve all-optical
coherent control of its spin states. We utilize this method to explore spin
dephasing effects in an impurity-rich sample beyond the limit of phonon-induced
decoherence: Employing Ramsey and Hahn-echo techniques at 12mK base temperature
we identify resonant coupling to a substitutional nitrogen spin bath as the
limiting decoherence source for the electron spin.

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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc