Oxford University Press eBooks, Journal Year: 2023, Volume and Issue: unknown, P. v - v
Published: Sept. 7, 2023
Reviews of Modern Physics, Journal Year: 2024, Volume and Issue: 96(2)
Published: June 27, 2024
A branch of quantum information is concerned with transformations that are possible given certain resources: for example, teleportation moves a state from one place to another, aided by entanglement and classical communication. Certain other tasks provably impossible. But, as surveyed in this review, surprising fact some become if another present, even returned untouched at the end task. This ``quantum catalysis'' enables large variety interesting tasks, applications ranging cryptography thermodynamics.
Language: Английский
Citations
22
Quantum, Journal Year: 2022, Volume and Issue: 6, P. 735 - 735
Published: June 13, 2022
Genuine
multipartite
entanglement
(GME)
is
considered
a
powerful
form
of
since
it
corresponds
to
those
states
that
are
not
biseparable,
i.e.
mixture
partially
separable
across
different
bipartitions
the
parties.
In
this
work
we
study
phenomenon
in
multiple-copy
regime,
where
many
perfect
copies
given
state
can
be
produced
and
controlled.
scenario
above
definition
leads
subtle
intricacies
as
biseparable
GME-activatable,
several
display
GME.
We
show
set
GME-activatable
admits
simple
characterization:
if
only
one
bipartition
This
second
question
whether
there
general
upper
bound
number
needs
order
observe
activation
GME,
which
answer
negative.
particular,
by
providing
an
explicit
construction,
prove
for
any
parties
Language: Английский
Citations
47
New Journal of Physics, Journal Year: 2024, Volume and Issue: 26(2), P. 023034 - 023034
Published: Jan. 15, 2024
Abstract We consider quantum metrology with several copies of bipartite and multipartite states. characterize the metrological usefulness by determining how much state outperforms separable identify a large class entangled states that become maximally useful for in limit number copies, even if is weakly not more than This way we activate metrologically genuine entanglement. Remarkably, only achievable attained exponentially fast but it can be achieved measurement few simple correlation observables. also make general statements about single copy pure surprisingly find multiqubit presented Hyllus et al (2010 Phys. Rev. A 82 012337), which are useful, embed qubits locally qutrits. discuss relation our scheme to error correction, its possible use noisy environment.
Language: Английский
Citations
8
Physical Review Letters, Journal Year: 2024, Volume and Issue: 132(7)
Published: Feb. 15, 2024
We provide a systematic method for nonlinear entanglement detection based on trace polynomial inequalities. In particular, this allows us to employ multipartite witnesses the of bipartite states, and vice versa. identify pairs entangled states which linear fails, but succeeds. With formulation great variety arise from immanant inequalities, can be implemented in laboratory through randomized measurements toolbox.
Language: Английский
Citations
7
npj Quantum Information, Journal Year: 2024, Volume and Issue: 10(1)
Published: Jan. 22, 2024
Language: Английский
Citations
5
Physical Review Letters, Journal Year: 2024, Volume and Issue: 132(15)
Published: April 8, 2024
Identifying what quantum-mechanical properties are useful to untap a superior performance in quantum technologies is pivotal question. Quantum resource theories provide unified framework analyze and understand such properties, as successfully demonstrated for entanglement coherence. While these examples of convex resources, which advantages can always be identified, many physical resources described by nonconvex set free states their interpretation has so far remained elusive. Here we address the fundamental question usefulness without convexity assumption, providing two operational interpretations generalized robustness measure general theories. First, characterize terms nonlinear witness reveal that any state more advantageous than one some multicopy channel discrimination task. Next, consider scenario where theory characterized multiple constraints show coincides with worst-case advantage single-copy setting. Based on characterizations, conclude every shows qualitative quantitative problems even specification structure states.
Language: Английский
Citations
4
Edelweiss Applied Science and Technology, Journal Year: 2025, Volume and Issue: 9(1), P. 801 - 845
Published: Jan. 14, 2025
The essential need to mitigate carbon emissions has brought the energy performance of building sector into focus. Conventional static façades, which are unable adapt dynamic external conditions, often compromise efficiency and occupant comfort. In contrast, adaptive façades present a groundbreaking opportunity transform design by responding dynamically environmental stimuli, optimizing consumption, enhancing indoor conditions. This paper explores recent advancements in façade systems, emphasizing their potential improve thermal comfort, daylight performance, most efficiency. addition, this highlights transformative role quantum smart materials advancing sustainable design. Overall, underscores using practices, offering architects, researchers, designers roadmap for integrating innovative energy-efficient solutions built environment.
Language: Английский
Citations
0
iScience, Journal Year: 2025, Volume and Issue: 28(4), P. 112174 - 112174
Published: March 11, 2025
Language: Английский
Citations
0
Quantum, Journal Year: 2025, Volume and Issue: 9, P. 1699 - 1699
Published: April 9, 2025
Multi-copy activation of genuine multipartite entanglement (GME) is a phenomenon whereby multiple copies biseparable but fully inseparable states can exhibit GME. This was shown to be generically possible in finite dimensions. Here, we extend this analysis infinite We provide examples GME-activatable non-Gaussian states. For Gaussian states, apply necessary biseparability criterion for the covariance matrix and show that it cannot detect GME activation. further identify satisfy and, some cases, even single are Thus, covariance-matrix not sufficient
Language: Английский
Citations
0
Physical review. A/Physical review, A, Journal Year: 2024, Volume and Issue: 109(4)
Published: April 8, 2024
Quantum resource theories (QRTs) provide a unified framework to analyze quantum properties as resources for achieving advantages in information processing. The generalized robustness and the weight of have been gaining increasing attention useful quantifiers. However, existing analyses these measures were restricted cases where convexity set free states is assumed, physically motivated do not necessarily satisfy this restriction. In paper, we give characterizations robustness- weight-based general QRTs without restriction through two different yet related approaches. On one hand, characterize by introducing nonlinear witness. We show construction new witness observables that detect resourcefulness given state from multiple copies and, using witnesses, operational interpretations above even any assumption. other find can also be interpreted worst-case maximum advantage variants channel-discrimination channel-exclusion tasks, respectively, consists several convex subsets corresponding restrictions. further extend results channels instruments. These every exhibits an Thus, establish usefulness robustness-based techniques beyond conventional scope QRTs, leading better understanding structure QRTs.
Language: Английский
Citations
2