Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum metrology with a quantum-chaotic sensor   Quantum metrology promises high-precision measurements of classical
parameters with far reaching implications for science and technology. So far,
research has concentrated almost exclusively on quantum-enhancements in
integrable systems, such as precessing spins or harmonic oscillators prepared
in non-classical states. Here we show that large benefits can be drawn from
rendering integrable quantum sensors chaotic, both in terms of achievable
sensitivity as well as robustness to noise, while avoiding the challenge of
preparing and protecting large-scale entanglement. We apply the method to
spin-precession magnetometry and show in particular that the sensitivity of
state-of-the-art magnetometers can be further enhanced by subjecting the
spin-precession to non-linear kicks that renders the dynamics chaotic.

25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph