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View article: Research on the Impact of Digital Inclusive Finance on the Urban-Rural Income Gap ——Panel Analysis Based on Province-Level Data in China
Research on the Impact of Digital Inclusive Finance on the Urban-Rural Income Gap ——Panel Analysis Based on Province-Level Data in China Open
With the rise of digital technology, digital inclusive finance has emerged as a game-changing innovation in modern finance. It's been instrumental in making financial services more accessible and convenient, reshaping income distribution p…
View article: Energetic Advantages for Quantum Agents in Online Execution of Complex Strategies
Energetic Advantages for Quantum Agents in Online Execution of Complex Strategies Open
Agents often execute complex strategies, adapting their response to each input stimulus depending on past observations and actions. Here, we derive the minimal energetic cost for classical agents to execute a given strategy, highlighting t…
View article: Thermodynamic overfitting and generalization: energetics of predictive intelligence
Thermodynamic overfitting and generalization: energetics of predictive intelligence Open
Overfitting is a crucial concern in machine learning, where an unnecessarily complex model closely captures the details of its training data but fails to generalize to new inputs. Regularization acts as a speed-bump to increasing complexit…
View article: Near-Term Pseudorandom and Pseudoresource Quantum States
Near-Term Pseudorandom and Pseudoresource Quantum States Open
A pseudorandom quantum state (PRS) is an ensemble of quantum states indistinguishable from Haar-random states to observers with efficient quantum computers. It allows one to substitute the costly Haar-random state with efficiently preparab…
View article: Enhancement of Energy Storage Performance in NaNbO3-Modified BNT-ST Ceramics
Enhancement of Energy Storage Performance in NaNbO3-Modified BNT-ST Ceramics Open
Relaxor ferroelectrics based on sodium bismuth titanate (Bi0.5Na0.5TiO3, BNT) have attracted more interest recently as potential ecologically acceptable materials for pulse power technology because of their excellent full-energy storage ca…
View article: Bi-Josephson effect in a driven-dissipative supersolid
Bi-Josephson effect in a driven-dissipative supersolid Open
The Josephson effect is a macroscopic quantum tunneling phenomenon in a system with superfluid property, when it is split into two parts by a barrier. Here, we examine the Josephson effect in a driven-dissipative supersolid realized by cou…
View article: Undecidability in Physics: a Review
Undecidability in Physics: a Review Open
The study of undecidability in problems arising from physics has experienced a renewed interest, mainly in connection with quantum information problems. The goal of this review is to survey this recent development. After a historical intro…
View article: Simple Construction of Qudit Floquet Codes on a Family of Lattices
Simple Construction of Qudit Floquet Codes on a Family of Lattices Open
Dynamical quantum error-correcting codes (QECC) offer wider possibilities in how one can protect logical quantum information from noise and perform fault-tolerant quantum computation compared to static QECCs. A family of dynamical QECCs ca…
View article: Metasurface-enabled broadband multidimensional photodetectors
Metasurface-enabled broadband multidimensional photodetectors Open
Light encodes multidimensional information, such as intensity, polarization, and spectrum. Traditional extraction of this light information requires discrete optical components by subdividing the detection area into many "one-to-one" funct…
View article: Causal Classification of Spatiotemporal Quantum Correlations
Causal Classification of Spatiotemporal Quantum Correlations Open
From correlations in measurement outcomes alone, can two otherwise isolated parties establish whether such correlations are atemporal? That is, can they rule out that they have been given the same system at two different times? Classical s…
View article: Thermodynamically Ideal Quantum State Inputs to Any Device
Thermodynamically Ideal Quantum State Inputs to Any Device Open
We investigate and ascertain the ideal inputs to any finite-time physical process. We demonstrate that the expectation values of entropy flow, heat, and work can all be determined via Hermitian observables of the initial state. These Hermi…
View article: Relative Entropy of Coherence Quantifies Performance in Bayesian Metrology
Relative Entropy of Coherence Quantifies Performance in Bayesian Metrology Open
The ability of quantum states to be in superposition is one of the key features that sets them apart from the classical world. This “coherence” is rigorously quantified by resource theories, which aim to understand how such properties may …
View article: Quasiprobability as a resource for memory reduction in stochastic process modeling
Quasiprobability as a resource for memory reduction in stochastic process modeling Open
In stochastic modeling, the excess entropy -- the mutual information shared between a processes past and future -- represents the fundamental lower bound of the memory needed to simulate its dynamics. However, this bound cannot be saturate…
View article: Variational Quantum Circuit Decoupling
Variational Quantum Circuit Decoupling Open
Decoupling systems into independently evolving components has a long history of simplifying seemingly complex systems. They enable a better understanding of the underlying dynamics and causal structures while providing more efficient means…
View article: Strategic Code: A Unified Spatio-Temporal Framework for Quantum Error-Correction
Strategic Code: A Unified Spatio-Temporal Framework for Quantum Error-Correction Open
Quantum error-correcting code (QECC) is the central ingredient in fault-tolerant quantum information processing. An emerging paradigm of dynamical QECC shows that one can robustly encode logical quantum information both temporally and spat…
View article: Classically Spoofing System Linear Cross Entropy Score Benchmarking
Classically Spoofing System Linear Cross Entropy Score Benchmarking Open
In recent years, several experimental groups have claimed demonstrations of ``quantum supremacy'' or computational quantum advantage. A notable first claim by Google Quantum AI revolves around a metric called the Linear Cross Entropy Bench…
View article: Dimension reduction in quantum sampling of stochastic processes
Dimension reduction in quantum sampling of stochastic processes Open
Quantum technologies offer a promising route to the efficient sampling and analysis of stochastic processes, with potential applications across the sciences. Such quantum advantages rely on the preparation of a quantum sample state of the …
View article: Embedding memory-efficient stochastic simulators as quantum trajectories
Embedding memory-efficient stochastic simulators as quantum trajectories Open
By exploiting the complexity intrinsic to quantum dynamics, quantum technologies promise a host of computational advantages. One such advantage lies in the field of stochastic modeling, where it has been shown that quantum stochastic simul…
View article: Thermodynamic Overfitting and Generalization: Energetic Limits on Predictive Complexity
Thermodynamic Overfitting and Generalization: Energetic Limits on Predictive Complexity Open
Efficiently harvesting thermodynamic resources requires a precise understanding of their structure. This becomes explicit through the lens of information engines -- thermodynamic engines that use information as fuel. Maximizing the work ha…
View article: Virtual quantum resource distillation: General framework and applications
Virtual quantum resource distillation: General framework and applications Open
We develop the general framework of virtual resource distillation -- an\nalternative distillation strategy proposed in [Phys. Rev. Lett. 132, 050203\n(2024)], which extends conventional quantum resource distillation by\nintegrating the pow…
View article: The relative entropy of coherence quantifies performance in Bayesian metrology
The relative entropy of coherence quantifies performance in Bayesian metrology Open
The ability of quantum states to be in superposition is one of the key features that sets them apart from the classical world. This `coherence' is rigorously quantified by resource theories, which aim to understand how such properties may …
View article: Quantum-optimal information encoding using noisy passive linear optics
Quantum-optimal information encoding using noisy passive linear optics Open
The amount of information that a noisy channel can transmit has been one of the primary subjects of interest in information theory. In this work we consider a practically-motivated family of optical quantum channels that can be implemented…
View article: Engines for predictive work extraction from memoryful quantum stochastic processes
Engines for predictive work extraction from memoryful quantum stochastic processes Open
Quantum information-processing techniques enable work extraction from a system's inherently quantum features, in addition to the classical free energy it contains. Meanwhile, the science of computational mechanics affords tools for th…
View article: Universal Sampling Lower Bounds for Quantum Error Mitigation
Universal Sampling Lower Bounds for Quantum Error Mitigation Open
Numerous quantum error-mitigation protocols have been proposed, motivated by the critical need to suppress noise effects on intermediate-scale quantum devices. Yet, their general potential and limitations remain elusive. In particular, to …
View article: Quantum limits of covert target detection
Quantum limits of covert target detection Open
In covert target detection, Alice attempts to send optical or microwave probes to determine the presence or absence of a weakly-reflecting target embedded in thermal background radiation within a target region, while striving to remain und…
View article: Causal Asymmetry of Classical and Quantum Autonomous Agents
Causal Asymmetry of Classical and Quantum Autonomous Agents Open
Why is it that a ticking clock typically becomes less accurate when subject to outside noise but rarely the reverse? Here, we formalize this phenomenon by introducing process causal asymmetry - a fundamental difference in the amount of pas…
View article: Nondestructively probing the thermodynamics of quantum systems with qumodes
Nondestructively probing the thermodynamics of quantum systems with qumodes Open
Quantum systems are by their very nature fragile. The fundamental backaction on a state due to quantum measurement notwithstanding, there is also in practice often a destruction of the system itself due to the means of measurement. This be…