Photonics,
Год журнала:
2024,
Номер
11(4), С. 370 - 370
Опубликована: Апрель 15, 2024
Numerous
optoelectronic
devices
based
on
low-dimensional
nanostructures
have
been
developed
in
recent
years.
Among
these,
pyramidal
semiconductors
(zero-
and
one-dimensional
nanomaterials)
favored
the
field
of
optoelectronics.
In
this
review,
we
discuss
detail
structures,
preparation
methods,
band
electronic
properties,
applications
(photocatalysis,
photoelectric
detection,
solar
cells,
light-emitting
diodes,
lasers,
optical
quantum
information
processing)
demonstrate
their
excellent
performances.
More
specifically,
semiconductor
dots
(PSQDs)
possess
higher
mobilities
longer
lifetimes,
which
would
be
more
suitable
for
photovoltaic
requiring
fast
carrier
transport.
addition,
linear
polarization
direction
exciton
emission
is
easily
controlled
via
magnetic
PSQDs
with
C3v
symmetry,
so
that
all-optical
multi-qubit
gates
electron
spin
as
a
bit
could
realized.
Therefore,
use
(e.g.,
InAs,
GaN,
InGaAs,
InGaN)
effective
candidates
constructing
examined
due
to
growing
interest
processing.
Pyramidal
nanorods
(PSNRs)
nanowires
(PSNWRs)
also
exhibit
efficient
separation
electron-hole
pairs
strong
light
absorption
effects,
are
expected
widely
utilized
light-receiving
devices.
Finally,
review
concludes
summary
current
problems
suggestions
potential
future
research
directions
context
semiconductors.
Advances in Optics and Photonics,
Год журнала:
2023,
Номер
15(3), С. 613 - 613
Опубликована: Июль 10, 2023
The
generation,
manipulation,
storage,
and
detection
of
single
photons
play
a
central
role
in
emerging
photonic
quantum
information
technology.
Individual
serve
as
flying
qubits
transmit
the
at
high
speed
with
low
losses,
for
example
between
individual
nodes
networks.
Due
to
laws
mechanics,
communication
is
fundamentally
tap-proof,
which
explains
enormous
interest
this
modern
On
other
hand,
stationary
or
states
computers
can
potentially
lead
increases
performance
through
parallel
data
processing,
outperform
classical
specific
tasks
when
advantage
achieved.
Here,
we
discuss
depth
great
potential
dots
(QDs)
In
context,
QDs
form
key
resource
implementation
networks
because
they
generate
on-demand.
Moreover,
are
compatible
mature
semiconductor
technology,
so
that
be
integrated
comparatively
easily
into
nanophotonic
structures,
basis
light
sources
circuits.
After
thematic
introduction,
present
numerical
methods
theoretical
approaches
device
design
physical
description
dot
devices.
We
then
technical
solutions
epitaxial
growth
deterministic
nanoprocessing
devices
based
on
QDs.
Furthermore,
most
promising
concepts
circuits
include
active
elements
applications
these
novel
close
an
overview
open
issues
outlook
future
developments.
npj 2D Materials and Applications,
Год журнала:
2023,
Номер
7(1)
Опубликована: Янв. 27, 2023
To
date,
quantum
communication
widely
relies
on
attenuated
lasers
for
secret
key
generation.
In
future
networks
fundamental
limitations
resulting
from
their
probabilistic
photon
distribution
must
be
overcome
by
using
deterministic
light
sources.
Confined
excitons
in
monolayers
of
transition
metal
dichalcogenides
(TMDCs)
constitute
an
emerging
type
emitter
These
atomically-thin
solid-state
sources
show
appealing
prospects
large-scale
and
low-cost
device
integration,
meeting
the
demands
information
technologies.
Here,
we
pioneer
practical
suitability
TMDC
devices
communication.
We
employ
a
$\mathrm{WSe}_2$
monolayer
single-photon
source
to
emulate
BB84
protocol
(QKD)
setup
achieve
click
rates
up
66.95
kHz
antibunching
values
down
0.034
-
performance
competitive
with
QKD
experiments
semiconductor
dots
or
color
centers
diamond.
Our
work
opens
route
towards
wider
applications
technologies
IEEE Internet of Things Journal,
Год журнала:
2024,
Номер
11(11), С. 19070 - 19093
Опубликована: Март 7, 2024
Industry
5.0
is
the
next
stage
in
industrial
evolution,
collaborating
between
human
ingenuity
and
intelligent
technologies
to
provide
manufacturing
solutions.
Integrating
modern
technology
like
Artificial
Intelligence
(AI),
robotics,
Internet
of
Things
(IoT)
into
production
processes
characterizes
5.0.
On
other
hand,
edge
computing
provides
real-time
data
processing
analysis
at
networks
edge,
closer
source
a
vital
component
Edge
enables
access
communicate
information
about
their
sectors
using
more
accessible,
standard
hardware
software
resources.
However,
no
recent
survey
papers
have
examined
importance
This
study
aims
fill
that
gap
by
presenting
on
discussing
variety
could
be
used
implement
support
this
new
paradigm.
First,
we
outline
an
overview
fundamentals
architecture.
Then
objectives
are
summarized
address
various
research
challenges,
including
privacy,
human-robot
co-working,
sustainability,
robust
networks.
Afterwards,
paper
extensive
emerging
for
5.0,
such
as
collaborative
robots,
AI,
Digital
Twins,
many
more.
In
addition,
highlights
open
challenges
potential
solutions
should
addressed
further
achieve
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Апрель 18, 2024
Abstract
Single
indistinguishable
photons
at
telecom
C-band
wavelengths
are
essential
for
quantum
networks
and
the
future
internet.
However,
high-throughput
technology
single-photon
generation
1550
nm
remained
a
missing
building
block
to
overcome
present
limitations
in
communication
information
technologies.
Here,
we
demonstrate
fabrication
of
quantum-photonic
integrated
devices
operating
based
on
epitaxial
semiconductor
dots.
Our
technique
enables
deterministic
integration
single
pre-selected
emitters
into
microcavities
circular
Bragg
gratings.
Respective
feature
triggered
with
ultra-high
purity
record-high
photon
indistinguishability.
Further
improvements
yield
coherence
properties
will
pave
way
implementing
non-linear
advanced
wavelengths.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(30)
Опубликована: Апрель 1, 2024
Abstract
In
this
review,
the
current
landscape
of
emergent
quantum
materials
for
photonic
applications
is
described.
The
review
focuses
on
three
specific
solid‐state
platforms:
single
emitters
in
monolayers
transition
metal
dichalcogenides
(TMDs),
defects
hexagonal
boron
nitride
(hBN),
and
colloidal
dots
perovskites
(PQDs).
These
platforms
share
a
unique
technological
accessibility,
enabling
rapid
implementation
testbed
applications,
all
while
being
verge
becoming
technologically
mature
enough
first
generation
real‐world
applications.
begins
with
comprehensive
overview
state‐of‐the‐art
relevant
single‐photon
sources
solid‐state,
introducing
most
important
performance
criteria
experimental
characterization
techniques
along
way.
Progress
each
novel
then
benchmarked
against
more
established
(yet
complex)
platforms,
highlighting
performance,
material‐specific
advantages,
giving
an
outlook
This
will
thus
provide
reader
snapshot
latest
developments
fast‐paced
field
including
required
concepts
experiments
to
technology.
ACS Photonics,
Год журнала:
2024,
Номер
11(2), С. 339 - 347
Опубликована: Янв. 23, 2024
Semiconductor
quantum
dots
(QDs)
enable
the
generation
of
single
and
entangled
photons,
which
are
useful
for
various
applications
in
photonic
technologies.
Specifically
communication
via
fiber-optical
networks,
operation
telecom
C-band
centered
around
1550
nm
is
ideal.
The
direct
QD-photons
this
spectral
range
with
high
quantum-optical
quality,
however,
remained
challenging.
Here,
we
demonstrate
coherent
on-demand
indistinguishable
photons
from
QD
devices
consisting
InAs/InP
QD-mesa
structures
heterogeneously
integrated
a
metallic
reflector
on
silicon
wafer.
Using
pulsed
two-photon
resonant
excitation
biexciton-exciton
radiative
cascade,
observe
Rabi
rotations
up
to
pulse
areas
4π
single-photon
purity
terms
npj Quantum Information,
Год журнала:
2024,
Номер
10(1)
Опубликована: Янв. 2, 2024
Abstract
Quantum-dot-based
single-photon
sources
are
key
assets
for
quantum
information
technology,
supplying
on-demand
scalable
resources
computing
and
communication.
However,
long-lasting
issues
such
as
limited
long-term
stability
source
brightness
have
traditionally
impeded
their
adoption
in
real-world
applications.
Here,
we
realize
a
distribution
field
trial
using
true
single
photons
across
an
18-km-long
dark
fibre,
located
the
Copenhagen
metropolitan
area,
optimized,
state-of-the-art,
quantum-dot
frequency-converted
to
telecom
wavelength.
A
secret
generation
rate
of
>
2
kbits/s
realized
over
9.6
dB
channel
loss
is
achieved
with
polarization-encoded
BB84
scheme,
showing
remarkable
more
than
24
hours
continuous
operation.
Our
results
highlight
maturity
deterministic
technology
while
paving
way
advanced
single-photon-based
communication
protocols,
including
fully
device-independent
distribution,
towards
goal
internet.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Фев. 23, 2024
Quantum
dots
are
promising
candidates
for
telecom
single
photon
sources
due
to
their
tunable
emission
across
the
different
low-loss
telecommunications
bands,
making
them
compatible
with
existing
fiber
networks.
Their
suitability
integration
into
photonic
structures
allows
enhanced
brightness
through
Purcell
effect,
supporting
efficient
quantum
communication
technologies.
Our
work
focuses
on
InAs/InP
QDs
created
via
droplet
epitaxy
MOVPE
operate
within
telecoms
C-band.
We
observe
a
short
radiative
lifetime
of
340
ps,
arising
from
factor
5,
owing
QD
low-mode-volume
crystal
cavity.
Through
in-situ
control
sample
temperature,
we
show
both
temperature
tuning
QD's
wavelength
and
preserved
purity
at
temperatures
up
25K.
These
findings
suggest
viability
QD-based,
cryogen-free
C-band
sources,
applicability
in
