Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interfacing Superconducting Qubits and Telecom Photons via a Rare-Earth
  Doped Crystal   We propose a scheme to couple short single photon pulses to superconducting
qubits. An optical photon is first absorbed into an inhomogeneously broadened
rare-earth doped crystal using controlled reversible inhomogeneous broadening.
The optical excitation is then mapped into a spin state using a series of
$\pi$-pulses and subsequently transferred to a superconducting qubit via a
microwave cavity. To overcome the intrinsic and engineered inhomogeneous
broadening of the optical and spin transitions in rare earth doped crystals, we
make use of a special transfer protocol using staggered $\pi$-pulses. We
predict total transfer efficiencies on the order of 90%.

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The categories of this paper are: plasm-ph
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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con