Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scheme for media conversion between electronic spin and photonic orbital
  angular momentum based on photonic nanocavity   Light with nonzero orbital angular momentum (OAM) or twisted light is
promising for quantum communication applications such as OAM-entangled photonic
qubits. There exist photonic OAM to photonic spin angular momentum (SAM), as
well as photonic SAM to electronic SAM interfaces but not any direct photonic
OAM-electronic SAM (flying to stationary) media converter within a single
device. Here, we propose a scheme which converts photonic OAM to electronic SAM
and vice versa within a single nanophotonic device. We employed a photonic
crystal nanocavity with an embedded quantum dot (QD) which confines an electron
spin as a stationary qubit. Spin polarized emission from the QD drive the
rotation of the nanocavity modes via the strong optical spin-orbit interaction.
The rotating modes then radiate light with nonzero OAM, allowing this device to
serve as a transmitter. As this can be a unitary process, the time-reversed
case enables the device to function as a receiver. This scheme could be
generalized to other systems of resonator and quantum emitters such as a
microdisk and defects in diamond for example. Our scheme shows the potential
for realizing an (ultra)compact electronic SAM-photonic OAM interface to
accommodate OAM as an additional degree of freedom for quantum information
purposes.

34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat