Zobrazeno 1 - 10
of 828
pro vyhledávání: '"Paris, Matteo G A"'
Conventional formulation of quantum sensing has been mostly developed in the context of local estimation, where the unknown parameter is roughly known. In contrast, global sensing, where the prior information is incomplete and the unknown parameter i
Externí odkaz:
http://arxiv.org/abs/2410.12050
Autor:
Danelli, Maria, Paris, Matteo G. A.
Intrinsic decoherence models (IDMs) have been proposed in order to solve the measurement problem in quantum mechanics. In this work, we assess the status of two of these models as physical theories by establishing the ultimate bounds on the estimabil
Externí odkaz:
http://arxiv.org/abs/2410.06750
Autor:
Frigerio, Massimo, Paris, Matteo G. A.
Multi-parameter statistical models may depend only on some functions of the parameters that are fewer than the number of initial parameters themselves. Such \emph{sloppy} statistical models are characterized by a degenerate Fisher Information matrix,
Externí odkaz:
http://arxiv.org/abs/2410.02989
Autor:
Montenegro, Victor, Mukhopadhyay, Chiranjib, Yousefjani, Rozhin, Sarkar, Saubhik, Mishra, Utkarsh, Paris, Matteo G. A., Bayat, Abolfazl
The main power of quantum sensors is achieved when the probe is composed of several particles. In this situation, quantum features such as entanglement contribute in enhancing the precision of quantum sensors beyond the capacity of classical sensors.
Externí odkaz:
http://arxiv.org/abs/2408.15323
We treat privacy in a network of quantum sensors where accessible information is limited to specific functions of the network parameters, and all other information remains private. We develop an analysis of privacy in terms of a manipulation of the q
Externí odkaz:
http://arxiv.org/abs/2408.01711
Routing classical and quantum information is a fundamental task for most quantum information technologies and processes. Here, we consider information encoded in the position of a quantum walker on a graph, and design an optimal structure to achieve
Externí odkaz:
http://arxiv.org/abs/2406.11834
Publikováno v:
APL Quantum 1, 036118 (2024)
We address characterization of lossy and dephasing channels in the presence of self-Kerr interaction using coherent probes. In particular, we investigate the ultimate bounds to precision in the joint estimation of loss and nonlinearity and of dephasi
Externí odkaz:
http://arxiv.org/abs/2406.10226
We examine metrological scenarios where the parameter of interest is encoded onto a quantum state through the action of a noisy quantum gate and investigate the ultimate bound to precision by analyzing the behaviour of the Quantum Fisher Information
Externí odkaz:
http://arxiv.org/abs/2406.01590
We address quantum metrology in critical spin chains with anisotropy and Dzyaloshinskii-Moriya (DM) interaction, and show how local and quasi-local measurements may be exploited to characterize global properties of the systems. In particular, we eval
Externí odkaz:
http://arxiv.org/abs/2405.20296
Discrete-time quantum walk (DTQW) represents a convenient mathematical framework for describing the motion of a particle on a discrete set of positions when this motion is conditioned by the values of certain internal degrees of freedom, which are us
Externí odkaz:
http://arxiv.org/abs/2405.17354