Results 131 to 140 of about 27,088 (288)
Fisher information rates in sequentially measured quantum systems
New Journal of PhysicsWe consider the impact that temporal correlations in the measurement statistics can have on the achievable precision in a sequential metrological protocol.
Eoin O’Connor +2 more
doaj +1 more source
Coherence-Enhanced Single-Qubit Thermometry out of Equilibrium
EntropyThe metrological limits of thermometry operated in nonequilibrium dynamical regimes are analyzed. We consider a finite-dimensional quantum system, employed as a quantum thermometer, in contact with a thermal bath inducing Markovian thermalization ...
Gonçalo Frazão +4 more
doaj +1 more source
Maximum Fisher Information in Mixed State Quantum Systems
, 2004 The paper concerns the maximization of classical Fisher information in a quantum system depending on an unknown parameter. This problem has been raised by physicists, who defined (Helstrom, 1967) a quantum counterpart of classical Fisher information ...
LUATI, ALESSANDRA, Alessandra Luati
core +1 more source
Material Strategies for Stimulation and Recording in Neural Biocomputing Platforms
Advanced Electronic Materials, EarlyView.Material strategies enabling stimulation and recording are central to neural biocomputing systems. This review examines how electronic materials govern the encoding of inputs and decoding of outputs in living neural networks. Advances in electrical, optical, and multimodal interfaces highlight emerging design principles for biocomputing platforms ...
Sehong Kang +5 more
wiley +1 more source
Geometry of State-Update Processes and Wave Function Collapse
Quantum ReportsWe develop an information-geometric framework for describing quantum state-update processes associated with measurement and statistical distinguishability.
Angelo Plastino
doaj +1 more source
Behavior of Quantum Fisher Information of Bell Pairs under Decoherence Channels
, 2014 Quantum Fisher information has recently been an essential tool for analyzing the phase sensitivity of the quantum states in various quantum tasks, requiring high precision, such as quantum clock synchronization, positioning and many applications which ...
Özaydın, Fatih +8 more
core +1 more source
Compressing Quantum Fisher Information
We show that the quantum Fisher information about any phase parameter encoded in a family of pure quantum states can be faithfully compressed into a single qubit, accompanied by a logarithmic amount of classical bits. When the phase is encoded into many identical copies of a qubit state on the equator of the Bloch sphere, we show that the compression ...
Tang, Rui Jie +7 more
openaire +2 more sources
Advanced Energy Materials, EarlyView.This work clarifies why organic semiconductors perform differently in photovoltaic devices and photocatalytic nanoparticles. By examining D18:Y5 and PM6:Y6 systems, we show how aggregation, exciton lifetime, and interfacial charge transfer behavior govern energy‐conversion pathways.
Gayoung Ham +14 more
wiley +1 more source
Optimizing Fisher Information In Quantum Technology
Fisher information is a statistical metric whose inverse represents a lower bound on the variance of an unbiased estimator. Naturally, in order to make the best estimates of a given unknown parameter, one would desire to find ways to minimize the value ...
Purvis, Bran
core +1 more source
Advanced Energy Materials, EarlyView.Thin‐shell InAs/ZnSe quantum dots functionalized with metal chalcogenide ligands were employed as electron transport layers in organic optoelectronic devices, yielding optimized conduction band alignment and film morphology. Consequently, the devices achieved enhanced charge transport, a detectivity of ∼1013 Jones, and a power conversion efficiency of ...
Yonghoon Choi +8 more
wiley +1 more source