Physical Review Research,
Journal Year:
2024,
Volume and Issue:
6(4)
Published: Nov. 26, 2024
Subwavelength
atomic
lattices
have
been
established
as
a
promising
platform
for
quantum
applications,
utilizing
collective
superradiant
and
subradiant
behavior
to
enhance
atom-light
interactions.
While
previous
work
has
demonstrated
high-fidelity
atom-photon
entanglement
in
these
systems,
the
generation
of
atom–atom
entanglement,
crucial
ingredient
full
scalability,
remains
conceptual
challenge.
Here,
we
propose
methods
between
qubits
by
identifying
specific
atoms
within
ring
array
qubits.
The
is
achieved
excitation
involving
both
states
leveraging
novel
symmetry
properties
array.
Specifically,
utilize
breaking
preparing
superpositions
detunings
our
protocols.
A
fidelity
analysis
protocols
provides
practical
experimental
parameters
state-of-the-art
setups.
Published
American
Physical
Society
2024
Physical Review Research,
Journal Year:
2025,
Volume and Issue:
7(1)
Published: Feb. 5, 2025
Superradiance,
in
which
the
collective
behavior
of
emitters
can
generate
enhanced
radiative
decay,
was
first
predicted
by
a
model,
now
known
as
Dicke
that
contains
collection
two-level
systems
(the
emitters)
all
interacting
with
same
photonic
mode.
In
this
article,
we
extend
original
model
to
elucidate
influence
nuclear
motion
on
superradiant
emission.
Our
dynamical
simulations
combined
electronic,
nuclear,
and
system
reveal
new
time
scale
attributed
population
leakage
dark,
subradiant
states.
Furthermore,
dark-state
emission
pathway
be
controlled
tuning
potential
energy
landscape.
These
findings
impact
how
states
molecular
degrees
freedom
leveraged
utilized
quantum
optical
systems.
Published
American
Physical
Society
2025
Physical Review Research,
Journal Year:
2025,
Volume and Issue:
7(2)
Published: April 14, 2025
For
a
single
particle,
relaxation
into
different
ground
states
is
governed
by
fixed
branching
ratios
determined
the
transition
matrix
element
and
environment.
Here,
we
show
that
in
many-body
open
quantum
systems
occupation
probability
of
one
state
can
be
boosted
well
beyond
what
dictated
single-particle
ratios.
Despite
competition,
interactions
suppress
all
but
dominant
decay
transition,
leading
to
“winner
takes
all”
dynamic
where
system
primarily
settles
state.
We
prove
that,
presence
permutation
symmetry,
this
problem
exactly
solvable
for
any
number
competing
channels.
Additionally,
develop
an
approximate
model
dynamics
mapping
evolution
onto
fluid
continuity
equation,
analytically
demonstrate
ratio
converges
unity
as
power
law
with
increasing
size,
This
near-deterministic
preparation
has
broad
applicability.
As
example,
discuss
protocol
molecular
photoassociation
collective
effectively
acts
catalyst,
amplifying
yield
specific
final
Our
results
avenues
strategies
control
systems.
Published
American
Physical
Society
2025
ACS Nano,
Journal Year:
2024,
Volume and Issue:
19(1), P. 963 - 971
Published: Dec. 26, 2024
Collective
optical
properties
can
emerge
from
an
ordered
ensemble
of
emitters
due
to
interactions
between
the
individual
units.
Superlattices
halide
perovskite
nanocrystals
exhibit
collective
light
emission,
influenced
by
dipole–dipole
simultaneously
excited
nanocrystals.
This
coupling
changes
both
emission
energy
and
rate
compared
uncoupled
We
demonstrate
how
quantum
confinement
governs
nature
in
ensemble.
The
extent
is
modified
controlling
nanocrystal
size
or
compositional
control
over
Bohr
radius.
In
superlattices
made
weakly
confined
nanocrystals,
red-shifted
with
a
faster
rate,
showing
key
characteristics
superfluorescence.
contrast,
stronger
quantum-confined
blue-shifted
slower
rate.
Both
types
correlative
multiphoton
bursts,
distinct
photon
bunching
statistics.
preferred
alignment
transition
dipoles
within
switches
relative
dipole
orientation
neighbors,
resulting
opposite
behaviors.
Our
results
extend
these
effects
relatively
high
temperatures
provide
better
understanding
exciton
phenomena
at
solid
state.
Physical Review Letters,
Journal Year:
2024,
Volume and Issue:
133(17)
Published: Oct. 22, 2024
We
report
a
driven-dissipative
mechanism
to
generate
stationary
entangled
W
states
among
strongly
interacting
quantum
emitters
placed
within
cavity.
Driving
the
ensemble
into
highest
energy
state-whether
coherently
or
incoherently-enables
subsequent
cavity-enhanced
decay
an
steady
state
consisting
of
single
deexcitation
shared
all
emitters,
i.e.,
state,
well
known
for
its
robustness
against
qubit
loss.
The
nonharmonic
structure
allows
this
transition
be
resonantly
selected
by
cavity,
while
quenching
off-resonant
decays.
Evidence
purely
dissipative
should
observable
in
state-of-the-art
cavity
QED
systems
solid
enabling
new
prospects
scalable
stabilization
platforms.
Physical Review Research,
Journal Year:
2024,
Volume and Issue:
6(4)
Published: Oct. 22, 2024
Two
nonidentical
quantum
emitters,
when
placed
within
a
cavity
and
coherently
excited
at
the
two-photon
resonance,
can
reach
stationary
states
of
nearly
maximal
entanglement.
In
Vivas-Viaña,
Martín-Cano,
Sánchez
Muñoz
[],
we
introduce
frequency-resolved
Purcell
effect
stabilizing
entangled
W
among
strongly
interacting
emitters
embedded
in
cavity.
Here
delve
deeper
into
specific
configuration
with
particularly
rich
phenomenology:
two
under
coherent
excitation
resonance.
This
scenario
yields
resonant
frequencies
where
combination
driving
Purcell-enhanced
decay
stabilizes
system
subradiant
superradiant
states,
respectively.
By
considering
case
nondegenerate
exploring
parameter
space
system,
show
that
this
mechanism
is
merely
one
complex
family
phenomena
generate
both
metastable
entanglement
We
provide
global
perspective
landscape
mechanisms
contribute
analytical
characterizations
insights
these
phenomena,
establishing
connections
previous
reports
literature
discussing
how
some
effects
be
optically
detected.
Published
by
American
Physical
Society
2024
Physical Review Research,
Journal Year:
2024,
Volume and Issue:
6(2)
Published: May 24, 2024
The
interaction
between
quantum
emitters
leads
to
the
formation
of
superradiant
and
subradiant
states
with
possible
applications
in
technologies.
To
improve
characterization
light
emission
from
these
systems,
we
present
here
a
systematic
theoretical
analysis
intensity
correlation
two
strongly
interacting
at
cryogenic
temperatures
as
function
frequency
excitation
laser.
This
effectively
accounts
for
effect
vibrational
modes
phonons
environment
through
combined
Debye-Waller/Franck-Condon
factor.
First,
analyze
color-blind
show
that
it
can
be
tailored
strong
antibunching
bunching
by
tuning
laser
two-photon
resonance
transition
state.
We
also
find
particularly
complex
behavior
when
is
tuned
state,
giving
raise
possibility
emitting
bunched
antibunched
depending
on
detuning
emitters.
numerical
results
are
supported
analytical
equations
used
experimental
Additionally,
selecting
photons
particular
frequencies,
rich
landscape
frequency-resolved
correlations,
which
depend
intensity.
correlations
provides
further
information
about
different
relaxation
processes
underlying
photon
emission,
unveiling
one-photon
cannot
resolved
neither
spectrum
nor
correlation.
These
versatile
practical
source
highlight
usefulness
unveil
dynamics
this
system.
