All Outputs (101)

Robustness- and weight-based resource measures without convexity restriction: Multicopy witness and operational advantage in static and dynamical quantum resource theories (2024)
Journal Article

Quantum resource theories (QRTs) provide a unified framework to analyze quantum properties as resources for achieving advantages in quantum information processing. The generalized robustness and the weight of resource have been gaining increasing att... Read More about Robustness- and weight-based resource measures without convexity restriction: Multicopy witness and operational advantage in static and dynamical quantum resource theories.

Every quantum helps: Operational advantage of quantum resources beyond convexity (2024)
Journal Article

Identifying what quantum-mechanical properties are useful to untap a superior performance in quantum technologies is a pivotal question. Quantum resource theories provide a unified framework to analyze and understand such properties, as successfully... Read More about Every quantum helps: Operational advantage of quantum resources beyond convexity.

A Post-Quantum Associative Memory (2023)
Journal Article

Associative memories are devices storing information that can be fully retrieved given partial disclosure of it. We examine a toy model of associative memory and the ultimate limitations it is subjected to within the framework of general probabilisti... Read More about A Post-Quantum Associative Memory.

Fundamental limitations to key distillation from Gaussian states with Gaussian operations (2023)
Journal Article

We establish fundamental upper bounds on the amount of secret key that can be extracted from quantum Gaussian states by using only local Gaussian operations, local classical processing, and public communication. For one-way public communication, or w... Read More about Fundamental limitations to key distillation from Gaussian states with Gaussian operations.

Towards the ultimate brain: Exploring scientific discovery with ChatGPT AI (2023)
Journal Article

This paper presents a novel approach to scientific discovery using an artificial intelligence (AI) environment known as ChatGPT, developed by OpenAI. This is the first paper entirely generated with outputs from ChatGPT. We demonstrate how ChatGPT can... Read More about Towards the ultimate brain: Exploring scientific discovery with ChatGPT AI.

Catalytic Gaussian thermal operations (2022)
Journal Article

We examine the problem of state transformations in the framework of Gaussian thermal resource theory in the presence of catalysts. To this end, we introduce an expedient parametrisation of covariance matrices in terms of principal mode temperatures a... Read More about Catalytic Gaussian thermal operations.

Quantum-enhanced passive remote sensing (2022)
Journal Article

We investigate theoretically the ultimate resolution that can be achieved with passive remote sensing in the microwave regime used, e.g., on board of satellites observing Earth, such as the soil moisture and ocean salinity (SMOS) mission. We give a f... Read More about Quantum-enhanced passive remote sensing.

Holographic entanglement in spin network states: A focused review (2022)
Journal Article

In the long-standing quest to reconcile gravity with quantum mechanics, profound connections have been unveiled between concepts traditionally pertaining to a quantum information theory, such as entanglement, and constitutive features of gravity, lik... Read More about Holographic entanglement in spin network states: A focused review.

Activation of indistinguishability-based quantum coherence for enhanced metrological applications with particle statistics imprint (2022)
Journal Article

Quantum coherence, an essential feature of quantum mechanics allowing quantum superposition of states, is a resource for quantum information processing. Coherence emerges in a fundamentally different way for nonidentical and identical particles. For... Read More about Activation of indistinguishability-based quantum coherence for enhanced metrological applications with particle statistics imprint.

Thermality versus objectivity: Can they peacefully coexist? (2021)
Journal Article

Under the influence of external environments, quantum systems can undergo various different processes, including decoherence and equilibration. We observe that macroscopic objects are both objective and thermal, thus leading to the expectation that b... Read More about Thermality versus objectivity: Can they peacefully coexist?.

General Expressions for the Quantum Fisher Information Matrix with Applications to Discrete Quantum Imaging (2021)
Journal Article

The quantum Fisher information matrix is a central object in multiparameter quantum estimation theory. It is usually challenging to obtain analytical expressions for it because most calculation methods rely on the diagonalization of the density matri... Read More about General Expressions for the Quantum Fisher Information Matrix with Applications to Discrete Quantum Imaging.

Quantum secure learning with classical samples (2021)
Journal Article

Studies addressing the question “Can a learner complete the learning securely?” have recently been spurred from the standpoints of fundamental theory and potential applications. In the relevant context of this question, we present a classical-quantum... Read More about Quantum secure learning with classical samples.

Mixing indistinguishable systems leads to a quantum Gibbs paradox (2021)
Journal Article

The classical Gibbs paradox concerns the entropy change upon mixing two gases. Whether an observer assigns an entropy increase to the process depends on their ability to distinguish the gases. A resolution is that an "ignorant" observer, who cannot d... Read More about Mixing indistinguishable systems leads to a quantum Gibbs paradox.

Mixing indistinguishable systems leads to a quantum Gibbs paradox (2021)
Journal Article

The classical Gibbs paradox concerns the entropy change upon mixing two gases. Whether an observer assigns an entropy increase to the process depends on their ability to distinguish the gases. A resolution is that an “ignorant” observer, who cannot d... Read More about Mixing indistinguishable systems leads to a quantum Gibbs paradox.

Entanglement between Identical Particles Is a Useful and Consistent Resource (2020)
Journal Article

The existence of fundamentally identical particles represents a foundational distinction between classical and quantum mechanics. Due to their exchange symmetry, identical particles can appear to be entangled - another uniquely quantum phenomenon wit... Read More about Entanglement between Identical Particles Is a Useful and Consistent Resource.

Analysis of the conditional mutual information in ballistic and diffusive non-equilibrium steady-states (2020)
Journal Article

The conditional mutual information (CMI) $\mathcal{I}(A\! : \! C|B)$ quantifies the amount of correlations shared between $A$ and $C$ \emph{given} $B$. It therefore functions as a more general quantifier of bipartite correlations in multipartite scen... Read More about Analysis of the conditional mutual information in ballistic and diffusive non-equilibrium steady-states.

Assisted concentration of Gaussian resources (2020)
Journal Article

In spite of their outstanding experimental relevance, Gaussian operations in continuous-variable quantum systems are subjected to fundamental limitations, as it is known that general resources cannot be distilled within the Gaussian paradigm. We show... Read More about Assisted concentration of Gaussian resources.

Gaussian Thermal Operations and The Limits of Algorithmic Cooling (2020)
Journal Article

The study of thermal operations allows one to investigate the ultimate possibilities of quantum states and of nanoscale thermal machines. Whilst fairly general, these results typically do not apply to continuous variable systems and do not take into... Read More about Gaussian Thermal Operations and The Limits of Algorithmic Cooling.

Demonstrating Quantum Coherence and Metrology that is Resilient to Transversal Noise (2019)
Journal Article

© 2019 American Physical Society. Quantum systems can be exploited for disruptive technologies but in practice quantum features are fragile due to noisy environments. Quantum coherence, a fundamental such feature, is a basis-dependent property that i... Read More about Demonstrating Quantum Coherence and Metrology that is Resilient to Transversal Noise.

One-shot quantum state exchange (2019)
Journal Article

© 2019 American Physical Society. Quantum state exchange is a quantum communication task in which two users exchange their respective quantum information in the asymptotic setting. In this paper, we consider a one-shot version of the quantum state ex... Read More about One-shot quantum state exchange.