Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Jump Metrology   Quantum metrology exploits quantum correlations in specially prepared
entangled or other non-classical states to perform measurements that exceed the
standard quantum limit. Typically though, such states are hard to engineer,
particularly when larger numbers of resources are desired. As an alternative,
this paper aims to establish quantum jump metrology which is based on
generalised sequential measurements as a general design principle for quantum
metrology and discusses how to exploit open quantum systems to obtain a quantum
enhancement. By analysing a simple toy model, we illustrate that
parameter-dependent quantum feedback can indeed be used to exceed the standard
quantum limit without the need for complex state preparation.

8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol