Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pass-through Mach-Zehnder topologies for macroscopic quantum
  measurements   Several relatively small-scale experimental setups aimed on prototyping of
future laser gravitational-wave detectors and testing of new methods of quantum
measurements with macroscopic mechanical objects, are under development now. In
these devices, not devoted directly to the gravitational-wave detection,
Mach-Zehnder interferometer with pass-through Fabry-Perot cavities in the arms
can be used instead of the standard Michelson/Fabry-Perot one. The advantage of
this topology is that it does not contain high-reflectivity end mirrors with
multilayer coatings, which Brownian noise could constitute the major part of
the noise budget of the Michelson/Fabry-Perot interferometers.
  We consider here two variants of this topology: the "ordinary" position meter
scheme, and a new variant of the quantum speed meter.

32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org