Physical Review Letters,
Journal Year:
2023,
Volume and Issue:
131(1)
Published: July 7, 2023
High-dimensional
quantum
steering
can
be
seen
as
a
test
for
the
dimensionality
of
entanglement,
where
devices
at
one
side
are
not
characterized.
As
such,
it
is
an
important
component
in
informational
protocols
that
make
use
high-dimensional
entanglement.
Although
has
been
recently
observed
experimentally,
phenomenon
lacking
general
certification
procedure.
We
provide
necessary
and
sufficient
conditions
to
certify
entanglement
dimension
scenario.
These
stated
terms
hierarchy
semidefinite
programs,
which
also
used
quantify
using
robustness.
To
demonstrate
practical
viability
our
method,
we
characterize
scenarios
prepared
with
maximally
entangled
states
measured
mutually
unbiased
bases.
Our
methods
give
significantly
stronger
bounds
on
noise
robustness
experimentally
Reviews of Modern Physics,
Journal Year:
2023,
Volume and Issue:
95(1)
Published: Feb. 6, 2023
Some
measurements
in
quantum
mechanics
disturb
each
other.
This
has
puzzled
physicists
since
the
formulation
of
theory,
but
only
recent
decades
incompatibility
been
analyzed
depth
and
detail,
using
notion
joint
measurability
generalized
measurements.
In
this
Colloquium
are
reviewed
from
perspective
information
science.
The
starts
by
discussing
basic
definitions
concepts.
An
overview
on
applications
incompatibility,
such
as
measurement
uncertainty
relations,
characterization
correlations,
or
processing
tasks
like
state
discrimination,
is
then
presented.
Finally,
emerging
directions
research,
a
resource
theory
well
other
concepts
to
grasp
nature
mechanics,
discussed.
Physical Review Letters,
Journal Year:
2022,
Volume and Issue:
128(9)
Published: March 1, 2022
Following
the
rising
interest
in
quantum
information
science,
extension
of
a
heat
engine
to
regime
by
exploring
microscopic
systems
has
seen
boon
last
decade.
Although
coherence
system
working
medium
been
investigated
play
nontrivial
role,
complete
understanding
intrinsic
advantage
engines
remains
elusive.
We
experimentally
demonstrate
that
correlation
between
and
thermal
bath
is
critical
for
Szilárd
engine,
where
naturally
excluded.
By
quantifying
nonclassical
through
steering,
we
reveal
when
demon
can
truly
steer
medium.
The
average
work
obtained
taking
different
ways
extraction
on
be
used
verify
real
engine.
Physical Review Letters,
Journal Year:
2025,
Volume and Issue:
134(9)
Published: March 7, 2025
We
introduce
semidefinite
programming
hierarchies
for
benchmarking
relevant
entanglement
properties
in
the
high-dimensional
steering
scenario.
Firstly,
we
provide
a
general
method
detecting
dimensionality
through
certification
of
Schmidt
number.
Its
key
feature
is
that
computational
cost
independent
number
under
consideration.
Secondly,
to
estimate
fidelity
source
with
any
maximally
entangled
state.
Using
only
basic
means,
demonstrate
usefulness
these
methods,
which
can
be
directly
used
analyze
experiments
on
systems.
Quantum,
Journal Year:
2020,
Volume and Issue:
4, P. 376 - 376
Published: Dec. 24, 2020
Photons
offer
the
potential
to
carry
large
amounts
of
information
in
their
spectral,
spatial,
and
polarisation
degrees
freedom.
While
state-of-the-art
classical
communication
systems
routinely
aim
maximize
this
information-carrying
capacity
via
wavelength
spatial-mode
division
multiplexing,
quantum
based
on
multi-mode
entanglement
usually
suffer
from
low
state
quality,
long
measurement
times,
limited
encoding
capacity.
At
same
time,
certification
methods
often
rely
assumptions
that
compromise
security.
Here
we
show
photonic
high-dimensional
transverse
position-momentum
degree-of-freedom
with
a
record
speed,
dimensionality,
without
making
any
about
or
channels.
Using
tailored
macro-pixel
basis,
precise
measurements,
modified
witness,
demonstrate
fidelities
up
94.4%
19-dimensional
state-space,
55
local
dimensions,
an
entanglement-of-formation
4
ebits.
Furthermore,
our
times
improvement
more
than
two
orders
magnitude
over
previous
demonstrations.
Our
results
pave
way
for
noise-robust
networks
saturate
single
photons.
Physical Review Letters,
Journal Year:
2022,
Volume and Issue:
128(24)
Published: June 16, 2022
One
of
the
most
often
implied
benefits
high-dimensional
(HD)
quantum
systems
is
to
lead
stronger
forms
correlations,
featuring
increased
robustness
noise.
Here,
we
experimentally
demonstrate
n-setting
linear
HD
steering
criterion.
We
verify
large
violation
inequalities
without
full-state
tomography.
The
lower
bound
2.24±0.01
in
11
dimensions,
exceeding
(V<2)
two-setting
criteria.
Hence,
a
higher
strength
has
been
revealed.
Moreover,
method
for
enhancing
noise
increasing
dimension,
alternatively,
by
measurement
settings.
Using
entanglement
retrieve
nonlocality
with
63.4±1.4%
isotropic
fraction,
surpassing
50%
limitation
Our
Letter
offers
potential
practical
one-sided
device-independent
information
processing
that
tolerates
noisy
environment,
lossy
detection,
and
transcends
present
transmission
distance
limitation.
Physical Review Letters,
Journal Year:
2022,
Volume and Issue:
129(10)
Published: Aug. 30, 2022
We
report
an
experimental
investigation
of
quantum
correlations
in
a
two-qutrit
spin
system
single
nitrogen-vacancy
center
diamond
at
room
temperatures.
Quantum
entanglement
between
two
qutrits
was
observed
temperature,
and
the
existence
nonclassical
beyond
qutrit
case
has
been
revealed.
Our
work
demonstrates
potential
NV
centers
as
multiqutrit
to
execute
information
tasks
provides
powerful
platform
for
studying
fundamental
physics
high-dimensional
systems
future.
The European Physical Journal C,
Journal Year:
2022,
Volume and Issue:
82(8)
Published: Aug. 17, 2022
Using
two
different
types
of
quantification
for
quantum
steering,
we
study
the
influence
Hawking
radiation
on
steering
fermionic
fields
in
Schwarzschild
spacetime.
The
degradation
between
physically
accessible
observers
and
generation
inaccessible
induced
by
are
studied.
We
also
reveal
difference
find
some
monogamy
relations
entanglement.
Furthermore,
show
properties
bosonic
