Optimal covariant quantum measurements
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/abe752
Abstract: We discuss symmetric quantum measurements and the associated covariant observables modelled, respectively, as instruments and positive-operator-valued measures. The emphasis of this work are the optimality properties of the measurements, namely, extremality, informational completeness, and the… read more here.
Keywords: work; quantum; optimal covariant; quantum measurements ... See more keywords
A resource theory of quantum measurements
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/abed67
Abstract: Resource theories are broad frameworks that capture how useful objects are in performing specific tasks. In this paper we devise a formal resource theory quantum measurements, focusing on the ability of a measurement to acquire… read more here.
Keywords: resource; quantum measurements; resource theory; theory quantum ... See more keywords
Dynamics of quantum measurements employing two Curie–Weiss apparatuses
Sign Up to like & getrecommendations! Published in 2017 at "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rsta.2016.0386
Abstract: Two types of quantum measurements, measuring the spins of an entangled pair and attempting to measure a spin at either of two positions, are analysed dynamically by apparatuses of the Curie–Weiss type. The outcomes comply… read more here.
Keywords: dynamics quantum; measurements employing; employing two; quantum measurements ... See more keywords
Adaptive filtering of projective quantum measurements using discrete stochastic methods
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.012412
Abstract: Adaptive filtering is a powerful class of control theoretic concepts useful in extracting information from noisy data sets or performing forward prediction in time for a dynamic system. The broad utilization of the associated algorithms… read more here.
Keywords: filtering projective; quantum measurements; projective measurements; quantum systems ... See more keywords
What quantum measurements measure
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.96.032110
Abstract: A solution to the second measurement problem, determining what prior microscopic properties can be inferred from measurement outcomes ("pointer positions"), is worked out for projective and generalized (POVM) measurements, using consistent histories. The result supports… read more here.
Keywords: quantum measurements; measure; measurements measure;
Generic appearance of objective results in quantum measurements
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.96.032124
Abstract: Measurement is of central interest in quantum mechanics as it provides the link between the quantum world and the world of everyday experience. One of the features of everyday experience is its robust, objective character,… read more here.
Keywords: results quantum; generic appearance; quantum measurements; appearance objective ... See more keywords
Single-shot quantum measurements sketch quantum many-body states
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.l161101
Abstract: Quantum measurements are our eyes to the quantum systems consisting of a multitude of microscopic degrees of freedom. However, the intrinsic uncertainty of quantum measurements and the exponentially large Hilbert space pose natural barriers to… read more here.
Keywords: quantum; sketch quantum; measurements sketch; shot quantum ... See more keywords
Device-Independent Tests of Quantum Measurements.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.118.250501
Abstract: We consider the problem of characterizing the set of input-output correlations that can be generated by an arbitrarily given quantum measurement. Our main result is to provide a closed-form, full characterization of such a set… read more here.
Keywords: tests quantum; quantum measurements; device independent; independent tests ... See more keywords
Experimental Self-Characterization of Quantum Measurements.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.040402
Abstract: The accurate and reliable description of measurement devices is a central problem in both observing uniquely nonclassical behaviors and realizing quantum technologies from powerful computing to precision metrology. To date quantum tomography is the prevalent… read more here.
Keywords: quantum; characterization quantum; quantum measurements; self characterization ... See more keywords
Simulability of High-Dimensional Quantum Measurements.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.190401
Abstract: We investigate the compression of quantum information with respect to a given set M of high-dimensional measurements. This leads to a notion of simulability, where we demand that the statistics obtained from M and an… read more here.
Keywords: dimensional quantum; quantum; simulability high; quantum measurements ... See more keywords
Faithful Simulation of Distributed Quantum Measurements With Applications in Distributed Rate-Distortion Theory
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Information Theory"
DOI: 10.1109/tit.2021.3124976
Abstract: We consider the task of faithfully simulating a distributed quantum measurement, wherein we provide a protocol for the three parties, Alice, Bob and Charlie, to simulate a repeated action of a distributed quantum measurement using… read more here.
Keywords: rate distortion; quantum measurements; distributed quantum; faithful simulation ... See more keywords