Results 11 to 20 of about 654,704 (296)

Observing the quantum Cheshire cat effect with noninvasive weak measurement

open access: yesnpj Quantum Information, 2021
One of the common conceptions of nature, typically derived from the experiences with classical systems, is that attributes of the matter coexist with the substance. In the quantum regime, however, the quantum particle itself and its physical property may
Yosep Kim   +6 more
doaj   +1 more source

Quantum observable generalized orthoalgebras [PDF]

open access: yesPositivity, 2019
Let ${\cal S}(\mathcal{H})$ denote the set of all self-adjoint operators (not necessarily bounded) on a Hilbert space $\mathcal{H}$, which is the set of all physical quantities on a quantum system $\mathcal{H}$. We introduce a binary relation $\bot$ on ${\cal S}(\mathcal{H})$. We show that if $A\bot B$, then $A$ and $B$ are affiliated with some abelian
Lei, Qiang   +3 more
openaire   +2 more sources

The Quantum Manifestation of Information

open access: yesProceedings, 2021
Information is already clearly presented in quantum theory; yet, concealed by matter/energy, it can be revealed only on the premise that the data of information is highlighted.
Tianen Wang
doaj   +1 more source

Noise-robust ground state energy estimates from deep quantum circuits [PDF]

open access: yesQuantum, 2023
In the lead up to fault tolerance, the utility of quantum computing will be determined by how adequately the effects of noise can be circumvented in quantum algorithms. Hybrid quantum-classical algorithms such as the variational quantum eigensolver (VQE)
Harish J. Vallury   +5 more
doaj   +1 more source

Observables on quantum structures [PDF]

open access: yesInformation Sciences, 2014
An observable on a quantum structure is any $\sigma$-homomorphism of quantum structures from the Borel $\sigma$-algebra into the quantum structure. We show that our partial information on an observable known only for all intervals of the form $(-\infty,t)$ is sufficient to determine uniquely the whole observable defined on quantum structures like ...
Dvurečenskij, Anatolij, Kuková, Mária
openaire   +3 more sources

Spatiotemporal observation of quantum crystallization of electrons

open access: yesNature Communications, 2023
Liquids crystallize as they cool; however, when crystallization is avoided in some way, they supercool, maintaining their liquidity, and freezing into glass at low temperatures, as ubiquitously observed.
Hideaki Murase   +4 more
doaj   +1 more source

Estimating Quantum Mutual Information of Continuous-Variable Quantum States by Measuring Purity and Covariance Matrix

open access: yesEntropy, 2022
We derive accessible upper and lower bounds for continuous-variable (CV) quantum states on quantum mutual information. The derivations are based on the observation that some functions of purities bound the difference between quantum mutual information of
Jiyong Park
doaj   +1 more source

Observation of spin-space quantum transport induced by an atomic quantum point contact

open access: yesNature Communications, 2021
Cold atoms have recently become a versatile platform for the study of quantum transport phenomena. Here the authors realize an alternative experimental scheme for quantum transport with cold atoms, by using spin-dependent impurity scattering in a spinful
Koki Ono   +5 more
doaj   +1 more source

Quantum Algorithms Applied to Satellite Mission Planning for Earth Observation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Earth imaging satellites are a crucial part of our everyday lives that enable global tracking of industrial activities. Use cases span many applications, from weather forecasting to digital maps, carbon footprint tracking, and vegetation monitoring ...
Serge Rainjonneau   +10 more
doaj   +1 more source

Intentional Observer Effects on Quantum Randomness: A Bayesian Analysis Reveals Evidence Against Micro-Psychokinesis

open access: yesFrontiers in Psychology, 2018
Intentional effects of human observation on the output of quantum-based random number generators (tRNG) have been studied for decades now. This research has been known as micro-psychokinesis (micro-PK) and many studies in the field reported evidence for ...
Markus A. Maier   +2 more
doaj   +1 more source

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