npj Quantum Information,
Journal Year:
2023,
Volume and Issue:
9(1)
Published: Feb. 22, 2023
Abstract
Quantum
states
of
light
and
matter
can
be
manipulated
on
the
nanoscale
to
provide
a
technological
resource
for
aiding
implementation
scalable
photonic
quantum
technologies.
Experimental
progress
relies
quality
efficiency
coupling
between
photons
internal
spin
emitters.
Here
we
demonstrate
nanophotonic
waveguide
platform
with
embedded
dots
(QDs)
that
enables
both
Purcell-enhanced
emission
strong
chiral
coupling.
The
design
uses
slow-light
effects
in
glide-plane
crystal
QD
tuning
match
frequency
region.
Simulations
were
used
map
chirality
Purcell
enhancement
depending
position
dipole
emitter
relative
air
holes.
highest
factors
occur
separate
regions,
but
there
is
still
significant
area
where
high
values
obtained.
Based
this,
first
record
large
radiative
decay
rate
17
±
2
ns
−1
(60
6
ps
lifetime)
corresponding
20
fold
enhancement.
This
was
achieved
by
electric-field
region
quasi-resonant
phonon-side
band
excitation.
We
then
5
1
dot
degree
modes,
substantially
surpassing
all
previous
measurements.
Together
these
excellent
prospects
using
QDs
implementations
on-chip
spin-photonics
relying
optics.
Reviews of Modern Physics,
Journal Year:
2023,
Volume and Issue:
95(1)
Published: March 10, 2023
Quantum
emitters
coupled
to
waveguides
experience
long-range
interactions
mediated
by
photons.
This
leads
superradiant
and
subradiant
states,
photon
bound
various
mechanisms
for
the
preparation
of
entangled
states
emitters.
article
reviews
experiments
on
a
wide
range
systems
their
description
theoretical
methods
insights
from
different
fields
physics.
Advanced Quantum Technologies,
Journal Year:
2022,
Volume and Issue:
5(7)
Published: April 15, 2022
Abstract
Worldwide,
enormous
efforts
are
directed
toward
the
development
of
so‐called
quantum
internet.
Turning
this
long‐sought‐after
dream
into
reality
is
a
great
challenge
that
will
require
breakthroughs
in
communication
and
computing.
To
establish
global,
quantum‐secured
infrastructure,
photonic
technologies
doubtlessly
play
major
role,
by
providing
interfacing
essential
resources,
for
example,
flying‐
stationary
qubits
or
memories.
Over
last
decade,
significant
progress
has
been
made
engineering
on‐demand
light
sources
based
on
semiconductor
dots,
which
enable
generation
close‐to‐ideal
single‐
entangled‐photon
states,
useful
applications
information
processing.
This
review
focuses
implementations
of,
building
blocks
for,
using
quantum‐light
epitaxial
dots.
After
reviewing
main
notions
introducing
devices
used
single‐photon
generation,
an
overview
experimental
key
distribution
protocols
dot
provided.
Furthermore,
recent
networks
as
well
thereof
summarized.
The
article
closes
with
outlook,
discussing
future
perspectives
field
identifying
challenges
to
be
solved.
Science,
Journal Year:
2023,
Volume and Issue:
379(6630), P. 389 - 393
Published: Jan. 26, 2023
Photon
emission
is
the
hallmark
of
light-matter
interaction
and
foundation
photonic
quantum
science,
enabling
advanced
sources
for
communication
computing.
Although
single-emitter
radiation
can
be
tailored
by
environment,
introduction
multiple
emitters
extends
this
picture.
A
fundamental
challenge,
however,
that
radiative
dipole-dipole
coupling
rapidly
decays
with
spatial
separation,
typically
within
a
fraction
optical
wavelength.
We
realize
distant
pairs
solid-state
embedded
in
nanophotonic
waveguide.
dynamically
probe
collective
response
identify
both
super-
subradiant
as
well
means
to
control
dynamics
proper
excitation
techniques.
Our
work
constitutes
foundational
step
toward
multiemitter
applications
scalable
quantum-information
processing.
Advances in Optics and Photonics,
Journal Year:
2023,
Volume and Issue:
15(3), P. 613 - 613
Published: July 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.
Advanced Quantum Technologies,
Journal Year:
2024,
Volume and Issue:
7(3)
Published: Jan. 18, 2024
Abstract
The
development
of
quantum‐enabled
photonic
technologies
has
opened
new
avenues
for
advanced
illumination
across
diverse
fields,
including
sensing,
computing,
materials,
and
integration.
This
review
highlights
how
Quantum‐enhanced
sensing
imaging
exploit
nonclassical
correlations
to
attain
unprecedented
accuracy
in
chaotic
environments.
As
well
as
guaranteeing
secure
communications,
quantum
cryptography,
protected
by
physical
principles,
ensures
unbreakable
cryptographic
key
exchange.
computing
speed
increases
exponentially,
previously
unimplementable
uses
classical
computers
become
feasible.
On‐chip
integration
enables
the
mass
production
components
pervasive
applications
facilitating
miniaturization
scalability.
A
powerful
flexible
platform
is
produced
when
systems
are
combined.
Quantum
spin
liquids
other
topological
materials
can
maintain
their
states
while
subject
decoherence.
Despite
challenges
with
decoherence,
production,
commercialization,
photonics
an
exciting
area
study
that
promises
lighting
techniques
impossible
conventional
optics.
To
realize
this
promise,
researchers
from
several
fields
must
work
together
solve
complex
technical
problems
decode
fundamental
physics.
Finally,
advances
have
potential
evolve
devices
cutting‐edge
methods
usher
a
age
options
based
on
dots.
npj Quantum Information,
Journal Year:
2024,
Volume and Issue:
10(1)
Published: Jan. 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.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(30)
Published: April 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.
PRX Quantum,
Journal Year:
2025,
Volume and Issue:
6(1)
Published: Jan. 8, 2025
Photon
loss
is
the
dominant
noise
mechanism
in
photonic
quantum
technologies.
Designing
fault-tolerant
schemes
with
high
tolerance
to
thus
a
central
challenge
scaling
information
processors.
Concatenation
of
construction
code
able
efficiently
correct
promising
approach
achieve
this
but
practical
ways
implement
concatenation
photons
have
been
lacking.
We
propose
for
generating
concatenated
graph
codes
using
multiphoton
emission
from
two
emitters
or
single
emitter
coupled
memory—capabilities
available
several
platforms.
show
that
these
enable
fusion-based
computation
regimes
photon
and
standard
fusion
gates
without
need
auxiliary
photons.
Published
by
American
Physical
Society
2025
