Physical review. A/Physical review, A,
Journal Year:
2024,
Volume and Issue:
110(1)
Published: July 3, 2024
Recently,
handling
of
contextual
sets,
in
particular
Kochen-Specker
(KS)
higher
dimensions
has
been
given
an
increasing
attention,
both
theoretically
and
experimentally.However,
methods
their
generation
are
diverse,
not
generally
applicable
every
dimension,
exponential
complexity.Therefore,
we
design
a
dimensional
upscaling
method,
whose
complexity
does
scale
with
dimension.As
proof
principle
generate
manageable-sized
KS
master
sets
up
to
27
spaces
show
that
well
over
32
can
be
reached.From
these
obtain
ample
number
smaller
sets.We
discuss
three
kinds
applications
work
dimensions.We
anticipate
other
for
quantum
information
processing
make
use
large
families
nonisomorphic
sets.8.
Communications Physics,
Journal Year:
2023,
Volume and Issue:
6(1)
Published: Sept. 28, 2023
Abstract
High-dimensional
quantum
entanglement
is
a
cornerstone
for
advanced
technology
enabling
large-scale
noise-tolerant
systems,
fault-tolerant
computing,
and
distributed
networks.
The
recently
developed
biphoton
frequency
comb
(BFC)
provides
powerful
platform
high-dimensional
information
processing
in
its
spectral
temporal
modes.
Here
we
propose
generate
singly-filtered
BFC
via
spontaneous
parametric
down-conversion
by
spectrally
shaping
only
the
signal
photons
with
Fabry-Pérot
cavity.
energy-time
verified
through
Franson-interference
recurrences
correlation
low-jitter
detectors.
Frequency-
temporal-
of
our
then
quantified
Schmidt
mode
decomposition.
Subsequently,
distribute
state
over
10
km
fiber
link
post-distribution
time-bin
dimension
lower
bounded
to
be
at
least
168.
Our
demonstrations
distribution
show
comb’s
capability
high-efficiency
high-capacity
Quantum Science and Technology,
Journal Year:
2025,
Volume and Issue:
10(2), P. 025010 - 025010
Published: Jan. 20, 2025
Abstract
We
propose
a
protocol
for
the
preparation
of
generalized
Greenberger–Horne–Zeilinger
(GHZ)
states
N
atoms
each
with
d
=
3
or
4
internal
levels.
generalize
celebrated
one-axis
twisting
(OAT)
Hamiltonian
qubits
to
qudits
by
including
OAT
interactions
equal
strengths
between
every
pair
qudit
levels,
we
call
as
balanced
(BOAT).
Analogous
qubits,
find
that
starting
from
product
state
an
arbitrary
number
,
dynamics
under
BOAT
leads
formation
GHZ
qutrits
(
3)
and
ququarts
4).
While
could
potentially
be
realized
on
several
platforms
where
all-to-all
coupling
is
possible,
here
specific
implementations
using
trapped
ion
systems.
show
preparing
these
fidelity
above
threshold
value
rules
out
lower
dimensional
entanglement
than
states.
For
qutrits,
also
bound
requires
only
global
addressing
crystal
single-shot
readout
one
Our
results
open
path
scalable
generation
certification
high-dimensional
multipartite
current
atom-based
quantum
hardware.
Quantum,
Journal Year:
2025,
Volume and Issue:
9, P. 1711 - 1711
Published: April 18, 2025
The
use
of
higher-dimensional
photonic
encodings
(qudits)
instead
two-dimensional
(qubits)
can
improve
the
loss
tolerance
and
reduce
computational
resources
photonic-based
quantum
information
processing.
To
harness
this
potential,
efficient
schemes
for
entangling
operations
such
as
high-dimensional
generalization
a
linear
optics
Bell
measurement
will
be
required.
We
show
how
an
entangled
state
analyzer
implemented
with
interferometer
auxiliary
states.
degree
entanglement
is
much
less
than
in
previous
protocols
quantified
by
exponentially
smaller
Schmidt
rank.
In
addition,
only
occupies
single
spatial
mode,
allowing
it
to
generated
deterministically
from
emitter
coupled
small
qubit
register.
reduced
complexity
states
results
high
robustness
imperfections
we
that
fidelities
above
0.9
qudit
dimensions
4
presence
error
rates
on
order
10%.
This
paves
way
experimental
demonstrations
current
hardware.
Physical Review Letters,
Journal Year:
2025,
Volume and Issue:
134(20)
Published: May 20, 2025
We
propose
a
quantum
measurement
that
probabilistically
projects
pair
of
qudits
dimension
d
onto
Bell
state
in
two-qubit
subspace.
It
can
be
implemented
using
linear-optical
circuits
with
the
success
probabilities
1−d−1
without
ancilla
photons
and
1−d−(k+1)2(2k−1)
photons.
allows
us
to
entangle
two
independently
prepared
high-dimensional
entangled
states
dimensionally
higher
than
ones
fusion
gates
on
qubits.
As
an
application,
we
fast
repeater
protocol
three-qudit
GHZ
memories.
Published
by
American
Physical
Society
2025
npj Quantum Information,
Journal Year:
2024,
Volume and Issue:
10(1)
Published: July 3, 2024
Abstract
We
propose
a
graph
method
for
systematically
searching
schemes
that
can
generate
multipartite
entanglement
in
linear
bosonic
systems
with
heralding.
While
heralded
generation
offers
more
tolerable
quantum
tasks
than
postselected
ones,
it
is
generally
challenging
to
find
appropriate
circuits
systems.
show
our
mapping
from
boson
subtractions
provides
handy
tactics
overcome
the
limitations
circuit
designs.
Within
framework,
we
identify
enhanced
qubit
N-partite
GHZ,
W,
and
superposition
of
N
=
3
GHZ
W
states.
Furthermore,
have
found
qudit
state
scheme,
which
requires
substantially
fewer
particles
previous
proposals.
These
results
demonstrate
power
approach
discovering
optimized
solutions
intricate
entangled
expect
serve
as
promising
tool
generating
diverse
entanglement.
Physical Review Letters,
Journal Year:
2023,
Volume and Issue:
130(20)
Published: May 18, 2023
We
propose
a
linear
optical
quantum
computation
scheme
using
time-frequency
degree
of
freedom.
In
this
scheme,
qubit
is
encoded
in
single-photon
frequency
combs,
and
manipulation
the
qubits
performed
time-resolving
detectors,
beam
splitters,
interleavers.
This
does
not
require
active
devices
such
as
high-speed
switches
electro-optic
modulators
robust
against
temporal
spectral
errors,
which
are
mainly
caused
by
detectors'
finite
resolution.
show
that
current
technologies
almost
meet
requirements
for
fault-tolerant
computation.
Quantum,
Journal Year:
2022,
Volume and Issue:
6, P. 836 - 836
Published: Oct. 13, 2022
Logic
Artificial
Intelligence
(AI)
is
a
subfield
of
AI
where
variables
can
take
two
defined
arguments,
True
or
False,
and
are
arranged
in
clauses
that
follow
the
rules
formal
logic.
Several
problems
span
from
physical
systems
to
mathematical
conjectures
be
encoded
into
these
solved
by
checking
their
satisfiability
(SAT).
In
contrast
machine
learning
approaches
results
approximations
local
minima,
delivers
mathematically
exact
solutions
those
problems.
this
work,
we
propose
use
logic
for
design
optical
quantum
experiments.
We
show
how
map
SAT
problem
experimental
preparation
an
arbitrary
state
logic-based
algorithm,
called
Klaus,
find
interpretable
representation
photonic
setup
generates
it.
compare
performance
Klaus
with
state-of-the-art
algorithm
purpose
based
on
continuous
optimization.
also
combine
both
numeric
strategies
significantly
improves
resolution
problem,
paving
path
developing
more
formal-based
context
physics
Frontiers of Optoelectronics,
Journal Year:
2022,
Volume and Issue:
15(1)
Published: April 11, 2022
Photonics
is
poised
to
play
a
unique
role
in
quantum
technology
for
computation,
communications
and
sensing.
Meanwhile,
integrated
photonic
circuits-with
their
intrinsic
phase
stability
high-performance,
nanoscale
components-offer
route
scaling.
However,
each
platform
has
set
of
advantages
pitfalls,
which
can
limit
power.
So
far,
the
most
advanced
demonstrations
circuitry
been
silicon
photonics.
thin-film
lithium
niobate
(TFLN)
emerging
as
powerful
with
capabilities;
advances
fabrication
have
yielded
loss
metrics
competitive
any
photonics
platform,
while
its
large
second-order
nonlinearity
provides
efficient
nonlinear
processing
ultra-fast
modulation.
In
this
short
review,
we
explore
prospects
dynamic
circuits-such
multiplexed
photon
sources
entanglement
generation-on
hybrid
TFLN
on
(TFLN/Si)
argue
that
TFLN/Si
may
capability
deliver
tomorrow.
Physical Review Letters,
Journal Year:
2024,
Volume and Issue:
132(11)
Published: March 13, 2024
Simulators
can
realize
novel
phenomena
by
separating
them
from
the
complexities
of
a
full
physical
implementation.
Here,
we
put
forward
scheme
that
simulate
exotic
statistics
D(S3)
non-Abelian
anyons
with
minimal
resources.
The
qudit
lattice
representation
this
planar
code
supports
local
encoding
D(S3)
anyons.
As
proof-of-principle
demonstration,
employ
classical
photonic
simulator
to
encode
single
qutrit
and
manipulate
it
perform
fusion
braiding
properties
D(S3)
technology
allows
us
required
nonunitary
operations
much
higher
fidelity
than
what
be
achieved
current
quantum
computers.
Our
approach
directly
generalized
larger
systems
or
different
anyonic
models,
thus
enabling
advances
in
exploration
error
correction
fundamental
physics
alike.
Published
American
Physical
Society
2024
