npj Quantum Materials,
Journal Year:
2025,
Volume and Issue:
10(1)
Published: Feb. 10, 2025
Abstract
Multidimensional
spectroscopy
has
a
long
history
originating
from
nuclear
magnetic
resonance,
and
now
found
widespread
application
at
infrared
optical
frequencies
as
well.
However,
the
energy
scales
of
traditional
multidimensional
probes
have
been
ill-suited
for
studying
quantum
materials.
Recent
technological
advancements
enabled
extension
these
techniques
to
terahertz
frequency
range,
in
which
collective
excitations
materials
are
typically
found.
This
Perspective
introduces
technique
two-dimensional
(2DTS)
unique
physics
revealed
by
2DTS
spectra,
accompanied
selection
rapidly
expanding
experimental
theoretical
literature.
While
so
far
primarily
applied
equilibrium,
we
provide
an
outlook
its
towards
understanding
their
dynamical
non-equilibrium
states
beyond.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
35(3)
Published: Oct. 26, 2022
Artificial
chiral
nanostructures
have
been
subjected
to
extensive
research
for
their
unique
chiroptical
activities.
Planarized
films
of
ultrathin
thicknesses
are
in
particular
demand
easy
on-chip
integration
and
improved
energy
efficiency
as
polarization-sensitive
metadevices.
Recently,
controlled
twisted
stacking
two
or
more
layers
nanomaterials,
such
2D
van
der
Waals
materials,
films,
traditional
metasurfaces,
at
an
angle
has
emerged
a
general
strategy
introduce
optical
chirality
into
achiral
solid-state
systems.
This
method
endows
new
degrees
freedom,
e.g.,
the
interlayer
twist
angle,
flexibly
engineer
tune
responses
without
having
change
material
design,
thus
greatly
facilitating
development
multifunctional
metamaterials.
In
this
review,
recent
exciting
progress
planar
metasurfaces
summarized
discussed
from
viewpoints
building
blocks,
fabrication
methods,
well
circular
dichroism
modulation
thereof
stacked
nanostructures.
The
review
further
highlights
ever-growing
portfolio
applications
these
including
polarization
conversion,
information
encryption,
sensing,
engineering
platform
hybrid
Finally,
forward-looking
prospects
provided.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(23)
Published: March 18, 2023
Extremely
strong-field
terahertz
(THz)
radiation
in
free
space
has
compelling
applications
nonequilibrium
condensed
matter
state
regulation,
all-optical
THz
electron
acceleration
and
manipulation,
biological
effects,
etc.
However,
these
practical
are
constrained
by
the
absence
of
high-intensity,
high-efficiency,
high-beam-quality,
stable
solid-state
light
sources.
Here,
generation
single-cycle
13.9-mJ
extreme
pulses
from
cryogenically
cooled
lithium
niobate
crystals
a
1.2%
energy
conversion
efficiency
800
nm
to
demonstrated
experimentally
using
tilted
pulse-front
technique
driven
home-built
30-fs,
1.2-Joule
Ti:sapphire
laser
amplifier.
The
focused
peak
electric
field
strength
is
estimated
be
7.5
MV
cm-1
.
A
record
1.1-mJ
single-pulse
at
450
mJ
pump
room
temperature
produced
observed
that
self-phase
modulation
optical
can
induce
saturation
behavior
substantially
nonlinear
regime.
This
study
lays
foundation
for
sub-Joule
will
inspire
more
innovations
science
applications.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(7)
Published: Sept. 4, 2023
Abstract
The
vector
characteristics
of
light
and
the
vectorial
transformations
during
its
transmission
lay
a
foundation
for
polarized
photodetection
objects,
which
broadens
applications
related
detectors
in
complex
environments.
With
breakthrough
low‐dimensional
materials
(LDMs)
optics
electronics
over
past
few
years,
combination
these
novel
LDMs
traditional
working
modes
is
expected
to
bring
new
development
opportunities
this
field.
Here,
state‐of‐the‐art
progress
LDMs,
as
polarization‐sensitive
components
even
imaging,
main
focus,
with
emphasis
on
relationship
between
principle
photodetectors
(PPs)
photoresponse
mechanisms
LDMs.
Particularly,
from
view
constitutive
equations,
existing
works
are
reorganized,
reclassified,
reviewed.
Perspectives
challenges
also
discussed.
It
hoped
that
work
can
provide
more
general
overview
use
field,
sorting
out
way
devices
“more
than
Moore”
or
“beyond
research.
Science China Information Sciences,
Journal Year:
2024,
Volume and Issue:
67(6)
Published: May 29, 2024
Abstract
Over
the
past
70
years,
semiconductor
industry
has
undergone
transformative
changes,
largely
driven
by
miniaturization
of
devices
and
integration
innovative
structures
materials.
Two-dimensional
(2D)
materials
like
transition
metal
dichalcogenides
(TMDs)
graphene
are
pivotal
in
overcoming
limitations
silicon-based
technologies,
offering
approaches
transistor
design
functionality,
enabling
atomic-thin
channel
transistors
monolithic
3D
integration.
We
review
important
progress
application
2D
future
information
technology,
focusing
particular
on
microelectronics
optoelectronics.
comprehensively
summarize
key
advancements
across
material
production,
characterization
metrology,
electronic
devices,
optoelectronic
heterogeneous
silicon.
A
strategic
roadmap
challenges
for
from
basic
research
to
industrial
development
outlined.
To
facilitate
such
a
transition,
technologies
tools
dedicated
must
be
developed
meet
standards,
employment
AI
growth,
characterizations,
circuit
will
essential.
It
is
time
academia
actively
engage
with
drive
next
10
years
research.
Physics Reports,
Journal Year:
2024,
Volume and Issue:
1078, P. 1 - 59
Published: May 24, 2024
The
interaction
of
light
and
matter
at
the
single-photon
level
is
central
importance
in
various
fields
physics,
including,
e.g.,
condensed
astronomy,
quantum
optics,
information.
Amplification
such
light–matter
can
be
highly
beneficial
to,
improve
device
performance,
explore
novel
phenomena,
understand
fundamental
has
therefore
been
a
long-standing
goal.
Furthermore,
simulation
regime
ultrastrong
coupling,
where
strength
comparable
to
bare
frequencies
uncoupled
systems,
also
become
hot
research
topic,
considerable
progress
made
both
theoretically
experimentally
past
decade.
In
this
review,
we
provide
detailed
introduction
recent
advances
amplification
interaction,
particularly
cavity
circuit
electrodynamics
optomechanics.
npj Quantum Materials,
Journal Year:
2025,
Volume and Issue:
10(1)
Published: Feb. 9, 2025
The
interplay
between
different
degrees
of
freedom
governs
the
emergence
correlated
electronic
states
in
quantum
materials,
with
charge
density
waves
(CDW)
often
coexisting
other
exotic
phases.
Under
thermal
equilibrium,
traditional
CDW
are
consequentially
accompanied
by
structural
phase
transitions.
In
contrast,
ultrafast
photoexcitation
allows
access
to
where
a
single
degree
dominates
time
domain,
enabling
study
underlying
physics
without
interference.
Here,
we
report
realization
long-lived
metastable
state
lattice
distortion
at
photoinduced
interfaces
GdTe3
using
time-
and
angle-resolved
photoemission
spectroscopy.
After
optical
excitation
above
melting
threshold,
identified
emerged
through
inverting
CDW-coupled
distortions,
lifetimes
on
order
10
picoseconds.
These
represent
novel
lacking
usual
amplitude
mode
allowing
quantification
dominant
role
instabilities
order.
This
work
provides
new
approach
disentangling
from
electron-phonon
coupling
nonequilibrium
method.
Abstract
Nonlinear
optics
is
of
crucial
importance
in
several
fields
science
and
technology
with
applications
frequency
conversion,
entangled‐photon
generation,
self‐referencing
combs,
crystal
characterization,
sensing,
ultra‐short
light
pulse
generation
characterization.
In
recent
years,
layered
materials
related
heterostructures
have
attracted
huge
attention
this
field,
due
to
their
nonlinear
optical
susceptibilities,
ease
integration
on
photonic
platforms,
2D
nature
which
relaxes
the
phase‐matching
constraints
thus
offers
a
practically
unlimited
bandwidth
for
parametric
processes.
review
most
advances
highlighting
impact
both
fundamental
technological
aspects,
are
reported
explained,
an
outlook
future
research
directions
atomically
thin
provided.
