Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Swapping of Gaussian Einstein-Podolsky-Rosen steering   Einstein-Podolsky-Rosen (EPR) steering is a quantum mechanical phenomenon
that allows one party to steer the state of a distant party by exploiting their
shared entanglement. It has potential applications in secure quantum
communication. In this paper, we present two swapping schemes of Gaussian EPR
steering, single-channel and dual-channel schemes, by the technique of
entanglement swapping. Two space-separated independent EPR steering states
without a direct interaction present EPR steering after deterministic swapping.
By comparing the EPR steering of the single-channel and dual-channel schemes,
we show that the transmission distance of the single-channel scheme is much
longer than that of the symmetric dual-channel scheme. Different from
entanglement swapping, one-way EPR steering is presented after swapping over
lossy channels. The most interesting thing is that the change of the EPR
steering direction is observed in the dual-channel scheme. We also show that
excess noise in a quantum channel will shorten the transmission distance of the
swapping, even leading to the sudden death of EPR steering. The presented
schemes provide a technical reference for remote quantum communications with
EPR steering.

20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph