Strict Hierarchy between Parallel, Sequential, and Indefinite-Causal-Order Strategies for Channel Discrimination. [PDF]
Physical Review Letters, 2020 We present an instance of a task of minimum-error discrimination of two qubit-qubit quantum channels for which a sequential strategy outperforms any parallel strategy.
J. Bavaresco +2 more
semanticscholar +1 more source
Quantum Refrigeration with Indefinite Causal Order. [PDF]
Physical Review Letters, 2020 We propose a thermodynamic refrigeration cycle which uses indefinite causal orders to achieve nonclassical cooling. The cycle cools a cold reservoir while consuming purity in a control qubit.
David Felce, V. Vedral
semanticscholar +1 more source
On Randomized Trace Estimates for Indefinite Matrices with an Application to Determinants [PDF]
Foundations of Computational Mathematics, 2020 Randomized trace estimation is a popular and well-studied technique that approximates the trace of a large-scale matrix B by computing the average of xTBx\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts ...
Alice Cortinovis, D. Kressner
semanticscholar +1 more source
ENGLISH INDEFINITE PRONOUN ANY AND ITS SERBIAN TRANSLATION EQUIVALENTS
Filolog, 2023 This study aims to analyse a contrastive relation between the English indefinite pronoun any and its Serbian equivalents. Beside the simple pronoun any, the study also focuses on how its compounds with other words – nouns (-body, -thing), numerals (-one)
Irena M. Pantić
doaj +1 more source
Quantum operations with indefinite time direction [PDF]
Communications Physics, 2020 The fundamental dynamics of quantum particles is neutral with respect to the arrow of time. And yet, our experiments are not: we observe quantum systems evolving from the past to the future, but not the other way round.
G. Chiribella, Zi-Wen Liu
semanticscholar +1 more source
Indefinite kernels in least squares support vector machines and principal component analysis
Applied and Computational Harmonic Analysis, 2017 Xiaolin Huang +2 more
exaly +2 more sources
Indefinite mean-field type linear-quadratic stochastic optimal control problems [PDF]
at - Automatisierungstechnik, 2020 This paper focuses on indefinite stochastic mean-field linear-quadratic (MF-LQ, for short) optimal control problems, which allow the weighting matrices for state and control in the cost functional to be indefinite.
Na Li, Xunjing Li, Zhiyong Yu
semanticscholar +1 more source
Quantum Metrology with Indefinite Causal Order. [PDF]
Physical Review Letters, 2019 We address the study of quantum metrology enhanced by indefinite causal order, demonstrating a quadratic advantage in the estimation of the product of two average displacements in a continuous variable system.
Xiaobin Zhao +2 more
semanticscholar +1 more source
Complexity/informativeness trade-off in the domain of indefinite pronouns
Annual Meeting of the Cognitive Science Society, 2021 The vocabulary of human languages has been argued to support efficient communication by optimizing the trade-off between complexity and informativeness (Kemp & Regier 2012).
M. Denic +2 more
semanticscholar +1 more source
Indefinite Causal Order in a Quantum Switch. [PDF]
Physical Review Letters, 2018 Quantum mechanics allows events to happen with no definite causal order: this can be verified by measuring a causal witness, in the same way that an entanglement witness verifies entanglement.
K. Goswami +6 more
semanticscholar +1 more source