Optica Quantum,
Journal Year:
2023,
Volume and Issue:
1(1), P. 19 - 19
Published: Sept. 29, 2023
Parametric
sources
in
quantum
optics
usually
require
some
form
of
spectro-temporal
control
for
conditional
generation
high-purity
single-photon
states,
but
their
properties
have
not
yet
been
optimized
using
integrated
microchips.
Using
external
short-pulse
lasers
and
separate
devices
pump
preparation
photon
generation,
as
is
traditional,
incurs
many
impediments
such
reduced
performance,
increased
loss,
high
cost,
limited
scalability.
To
overcome
these
limitations,
here
we
demonstrate
a
circuit
including
high-bandwidth,
high-extinction
ratio
electro-optic
modulators
pump-pulse
fully
with
high-quality
factor
(
Q
)
microresonators
efficient
parametric
nonlinearity,
together
seamlessly
interconnecting
waveguides.
The
microchip
uses
different
optical
materials
on
common
platform
multi-layer
photonic
architecture.
this,
the
joint
spectrum
room-temperature
biphoton
first
time
single
microchip,
that
theoretical
purity
bound
can
be
achieved.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: March 27, 2023
Abstract
Integrated
electro-optic
(EO)
modulators
are
fundamental
photonics
components
with
utility
in
domains
ranging
from
digital
communications
to
quantum
information
processing.
At
telecommunication
wavelengths,
thin-film
lithium
niobate
exhibit
state-of-the-art
performance
voltage-length
product
(
V
π
L
),
optical
loss,
and
EO
bandwidth.
However,
applications
imaging,
optogenetics,
science
generally
require
devices
operating
the
visible-to-near-infrared
(VNIR)
wavelength
range.
Here,
we
realize
VNIR
amplitude
phase
featuring
’s
of
sub-1
⋅
cm,
low
high
bandwidth
response.
Our
Mach-Zehnder
a
as
0.55
cm
at
738
nm,
on-chip
loss
~0.7
dB/cm,
bandwidths
excess
35
GHz.
Furthermore,
highlight
opportunities
these
high-performance
offer
by
demonstrating
integrated
frequency
combs
over
50
lines
tunable
spacing,
shifting
pulsed
light
beyond
its
intrinsic
(up
7x
Fourier
limit)
an
shearing
method.
Advances in Physics X,
Journal Year:
2024,
Volume and Issue:
9(1)
Published: March 12, 2024
The
lithium
niobate
on
insulator
devices
confine
the
light
field
to
submicron
size
in
monocrystalline
niobate,
achieve
ultra-strong
electro-optical
interaction
and
nonlinear
optical
interaction,
thus
extend
frontiers
of
photonic
research
past
decade.
Such
are
manufactured
using
nano-fabrication
technology
over
thin-film
wafer,
which
usually
stands
a
silica
layer
above
substrate
material,
including
low-loss
waveguides,
modulators,
domain
engineered
structures,
high-Q
microring
resonators
electrical
filters
etc.,
lead
breakthroughs
communication,
microwave
photonics
quantum
integration.
Physical Review Letters,
Journal Year:
2023,
Volume and Issue:
131(24)
Published: Dec. 11, 2023
An
optical
frequency
comb
is
a
spectrum
of
radiation
which
consists
evenly
spaced
and
phase-coherent
narrow
spectral
lines
initially
invented
in
laser
for
metrology
purposes.
A
direct
analog
combs
the
magnonic
systems
has
not
been
demonstrated
to
date.
In
our
experiment,
we
generate
new
resonator
with
giant
mechanical
oscillations
through
magnomechanical
interaction.
We
observe
contains
up
20
lines,
are
separated
by
10.08
MHz.
The
thermal
effect
based
on
strong
pump
power
induces
cyclic
oscillation
magnon
shift,
leads
periodic
comb.
Moreover,
demonstrate
stabilization
control
spacing
via
injection
locking.
Our
Letter
lays
groundwork
fields
sensing
metrology.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
2(1)
Published: Jan. 7, 2025
The
stability
of
integrated
photonic
circuits
is
crucial
for
applications
requiring
high
frequency
precision
or
robust
operation
over
time,
such
as
optomechanical
sensing,
conversion,
optical
communication,
and
quantum
optics.
Photonic
memory
useful
low-energy
computing
interconnects.
Thin-film
lithium
niobate
(TFLN),
an
emerging
platform,
exhibits
complex
material
properties
including
pyroelectric
photorefractive
effects
which
could
cause
intra-device
drift
excess
noise
under
different
conditions
enable
memory.
However,
the
long-term
effect
these
remain
unexplored.
Herein,
we
discovered
a
long-lived
refractive
index
change
in
Z-cut
TFLN
microresonators
induced
by
light
excitation
temperature
variation,
with
recovery
times
exceeding
10
h.
This
instability
strongly
depends
on
thin
film's
crystal
orientations.
Leveraging
memory,
realize
trimming
cavity
resonance
frequencies.
Our
result
offers
insights
towards
understanding
fundamental
dynamic
behavior
devices.
Optics Letters,
Journal Year:
2024,
Volume and Issue:
49(7), P. 1729 - 1729
Published: Feb. 27, 2024
Soliton
microcombs
are
regarded
as
an
ideal
platform
for
applications
such
optical
communications,
sensing,
low-noise
microwave
sources,
atomic
clocks,
and
frequency
synthesizers.
Many
of
these
require
a
broad
comb
spectrum
that
covers
octave,
essential
implementing
the
f
-
2f
self-referencing
techniques.
In
this
work,
we
have
successfully
generated
octave-spanning
soliton
microcomb
based
on
z-cut
thin-film
lithium
niobate
(TFLN)
microresonator.
This
achievement
is
realized
under
on-chip
pumping
at
340
mW
through
extensive
research
into
broadening
dual
dispersive
waves
(DWs).
Furthermore,
repetition
rate
octave
accurately
measured
using
electro-optic
by
x-cut
TFLN
racetrack
Our
results
represent
crucial
step
toward
realization
practical,
integrated,
fully
stabilized
systems
TFLN.
ACS Photonics,
Journal Year:
2024,
Volume and Issue:
11(5), P. 2114 - 2122
Published: April 18, 2024
A
light
source
is
an
indispensable
component
in
on-chip
systems.
Compared
with
hybrid
or
heterogeneous
integrated
laser,
monolithically
laser
more
suitable
for
high-density
photonic
circuits
because
of
the
capability
large-scale
manufacturing,
lower
active-passive
coupling
loss,
and
less
test
complexity.
Recent
years
have
seen
spark
research
on
rare-earth
ion-doped
thin
film
lithium
niobate,
demonstrations
been
made
both
classical
quantum
chips.
However,
low
output
power
limited
emitting
efficiency
hinder
application
chip-scale
based
this
platform.
Here
a
highly
efficient
assisted
by
amplifier
proposed
experimentally
prepared
Erbium-doped
niobate.
slope
0.43%
linewidth
47.86
kHz
are
obtained.
The
maximum
7.989
μW.
Our
results
show
viable
solution
to
improve
without
changing
intrinsic
material,
our
design
has
potential
applications
being
incorporated
functional
devices
such
as
optical
communications,
memory,
emission.
Optics Letters,
Journal Year:
2023,
Volume and Issue:
48(12), P. 3159 - 3159
Published: May 15, 2023
In
this
work,
we
report
a
highly
efficient
and
tunable
on-chip
sum-frequency
generation
(SFG)
on
thin-film
lithium
niobate
platform
via
modal
phase
matching
(e
+
e→e).
It
provides
SFG
solution
with
both
high
efficiency
poling-free
by
using
the
highest
nonlinear
coefficient
d
33
instead
of
31
.
The
conversion
is
approximately
2143%W
−1
full
width
at
half
maximum
(FWHM)
4.4
nm
in
3-mm-long
waveguide.
can
find
applications
chip-scale
quantum
optical
information
processing
based
nonreciprocity
devices.
Critical Reviews in Analytical Chemistry,
Journal Year:
2023,
Volume and Issue:
unknown, P. 1 - 26
Published: Jan. 5, 2023
Despite
being
extremely
old
concepts,
plasmonics
and
surface
plasmon
resonance-based
biosensors
have
been
increasingly
popular
in
the
recent
two
decades
due
to
growing
interest
nanooptics
are
now
of
relevant
significance
regards
applications
associated
with
human
health.
Plasmonics
integration
into
point-of-care
devices
for
health
surveillance
has
enabled
significant
levels
sensitivity
limit
detection
be
achieved
encouraged
expansion
fields
study
market
niches
devoted
creation
quick
incredibly
sensitive
label-free
detection.
The
trend
reflects
wearable
plasmonic
sensor
development
as
well
widespread
applications,
demonstrating
potential
impact
new
generation
on
well-being
through
concepts
personalized
medicine
global
In
this
context,
aim
here
is
discuss
potential,
limitations,
opportunities
improvement
that
arisen
a
result
microsystems
lab-on-chip
over
past
five
years.
Recent
performance
analyzed.
final
analysis
focuses
microfluidics
lab-on-a-chip
quantum
technology
prospecting
it
promising
solution
chemical
biological
sensing.
Here
underlined
how
research
field
sensing
flourished
decade
overcome
limits
given
by
fluctuations
noise.
advances
nanophotonics,
used
create
effective
would
continue
benefit
if
harnessed
properly.
Abstract
High‐dimensional
photonic
entanglement
is
a
promising
candidate
for
error‐protected
quantum
information
processing
with
improved
capacity.
Encoding
high‐dimensional
qudits
in
the
carrier
frequency
of
photons
combines
ease
generation,
universal
single‐photon
gates,
and
compatibility
fiber
transmission
high‐capacity
communication.
Recent
landmark
experiments
have
impressively
demonstrated
interference
few
modes,
yet
certification
massive‐dimensional
has
remained
an
open
challenge.
This
study
shows
how
to
harness
large
frequency‐entanglement
inherent
standard
continuous‐wave
spontaneous
parametric
down‐conversion
processes.
It
further
reports
record
discretized
entanglement,
combined
novel
approach
that
both
highly
efficient
nonlocally
implementable.
technique
requires
very
measurements
does
not
require
assumptions
on
state.
The
work
opens
possibility
utilizing
this
encoding
communications
science
general.