Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Compact, Mobile, Low-Threshold Squeezed Light Source   Strongly squeezed light finds many important applications within the fields
of quantum metrology, quantum communication and quantum computation. However,
due to the bulkiness and complexity of most squeezed light sources of today,
they are still not a standard tool in quantum optics labs. We have taken the
first steps in realizing a compact, high-performance 1550 nm squeezing source
based on commercially available fiber components combined with a free-space
double-resonant parametric down-conversion source. The whole setup, including
single-pass second-harmonic generation in a waveguide, fits on a small
breadboard and produces 9.3 dB of squeezing at a 5 MHz sideband-frequency. The
setup is currently limited by phase noise, but further optimization and
development should allow for a 19" sized turn-key squeezing source capable of
delivering more than 10 dB of squeezing.

35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph