Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Protecting qubit coherence by spectrally engineered driving of the spin
  environment   Modern quantum technologies rely crucially on techniques to mitigate quantum
decoherence; these techniques can be either passive, achieved for example via
materials engineering, or active, typically achieved via pulsed monochromatic
driving fields applied to the qubit. Using a solid-state defect spin coupled to
a microwave-driven spin bath, we experimentally demonstrate a decoherence
mitigation method based on spectral engineering of the environmental noise with
a polychromatic drive waveform, and show that it outperforms monochromatic
techniques. Results are in agreement with quantitative modeling, and open the
path to active decoherence protection using custom-designed waveforms applied
to the environment rather than the qubit.

14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph