Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-efficiency multipartite entanglement purification of electron-spin
  states with charge detection   We present a high-efficiency multipartite entanglement purification protocol
(MEPP) for electron-spin systems in a Greenberger-Horne-Zeilinger state based
on their spins and their charges. Our MEPP contains two parts. The first part
is our normal MEPP with which the parties can obtain a high-fidelity N-electron
ensemble directly, similar to the MEPP with controlled-not gates. The second
one is our recycling MEPP with entanglement link from N'-electron subsystems (2
< N' < N). It is interesting to show that the N'-electron subsystems can be
obtained efficiently by measuring the electrons with potential bit-flip errors
from the instances which are useless and are just discarded in all existing
conventional MEPPs. Combining these two parts, our MEPP has the advantage of
the efficiency higher than other MEPPs largely for electron-spin systems.

28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin