Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum state transfer between valley and photon qubits   The electron-photon interaction in 2D materials obeys the rule of electron
valley-photon polarization correspondence. At the quantum level, such
correspondence can be utilized to entangle valleys and polarizations and attain
the transfer of quantum states (or information) between valley and photon
qubits. Our work presents a theoretical study of the interaction between the
two types of qubits and the resultant quantum state transfer. A generic setup
is introduced, which involves optical cavities enhancing the electron-photon
interaction as well as facilitating both the entanglement and un-entanglement
between valleys and polarizations required by the transfer. The quantum system
considered consists of electrons, optically excited trions, and cavity photons,
with photons moving in and out of the system. A wave equation based analysis is
performed, and analytical expressions are derived for the two important figures
of merits that characterize the transfer, namely, yield and fidelity, allowing
for the investigation of their dependences on various qubit and cavity
parameters. A numerical study of the yield and fidelity has also been carried
out. Overall, this work shows promising characteristics in the valley-photon
state transfer, with the conclusion that the valley-polarization correspondence
can be exploited to achieve the transfer with good yield and high fidelity.

33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int