Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement Swapping for Generation of Heralded
  Time-Frequency-Entangled Photon Pairs   Photonic time-frequency entanglement is a promising resource for quantum
information processing technologies. We investigate swapping of
continuous-variable entanglement in the time-frequency degree of freedom using
three-wave mixing in the low-gain regime with the aim of producing heralded
biphoton states with high purity and low multi-pair probability. Heralding is
achieved by combining one photon from each of two biphoton sources via
sum-frequency generation to create a herald photon. We present a realistic
model with pulsed pumps, investigate the effects of resolving the frequency of
the herald photon, and find that frequency-resolving measurement of the herald
photon is necessary to produce high-purity biphotons. We also find a trade-off
between the rate of successful entanglement swapping and both the purity and
quantified entanglement resource (negativity) of the heralded biphoton state.

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The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas