Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Passively self-error-rejecting qubit transmission over a
  collective-noise channel   We propose a passively self-error-rejecting single-qubit transmission scheme
for an arbitrary polarization state of a single qubit over a collective-noise
channel, without resorting to additional qubits and entanglement. By splitting
a single qubit into some wavepackets with some Mach-Zehnder interferometers, we
can obtain an uncorrupted state with a success probability approaching 100% via
postselection in different time bins, independent of the parameters of
collective noise. It is simpler and more flexible than the schemes utilizing
decoherence-free subspace and those with additional qubits. One can directly
apply this scheme to almost all quantum communication protocols based on single
photons or entangled photon systems against a collective noise.

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The categories of this paper are: math
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex