Results 21 to 30 of about 93,872 (266)

Quantum Algorithms Applied to Satellite Mission Planning for Earth Observation

IEEE 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, Igor Tokarev, Sergei Iudin, Saaketh Rayaprolu, Karan Pinto, Daria Lemtiuzhnikova, Miras Koblan, Egor Barashov, Mo Kordzanganeh, Markus Pflitsch, Alexey Melnikov   +10 more
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Observation of interaction-induced phenomena of relativistic quantum mechanics

Communications Physics, 2021
Relativistic quantum mechanics is typically used to describe phenomena of high-energy physics but can also be applied to describe some features of quantum materials.
Weixuan Zhang, Hao Yuan, Wenjing He, Xingen Zheng, Na Sun, Fengxiao Di, Houjun Sun, Xiangdong Zhang   +7 more
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Probability Representation of Quantum Observables and Quantum States [PDF]

Journal of Russian Laser Research, 2017
We introduce the probability distributions describing quantum observables in conventional quantum mechanics and clarify their relations to the tomographic probability distributions describing quantum states. We derive the evolution equation for quantum observables (Heisenberg equation) in the probability representation and give examples of the spin-1/2
Chernega, Vladimir N., Man'ko, Olga V., Man'ko, Vladimir I.   +2 more
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Measuring Incompatibility and Clustering Quantum Observables with a Quantum Switch

Physical Review Letters, 2023
The existence of incompatible observables is a cornerstone of quantum mechanics and a valuable resource in quantum technologies. Here we introduce a measure of incompatibility, called the mutual eigenspace disturbance (MED), which quantifies the amount of disturbance induced by the measurement of a sharp observable on the eigenspaces of another.
Ning Gao, Dantong Li, Anchit Mishra, Junchen Yan, Kyrylo Simonov, Giulio Chiribella   +5 more
openaire   +4 more sources

Unambiguous joint detection of spatially separated properties of a single photon in the two arms of an interferometer

Communications Physics, 2023
The quantum superposition principle implies that a particle entering an interferometer evolves by simultaneously taking both arms. If a non-destructive, minimally-disturbing interaction coupling a particle property to a pointer is implemented on each arm
Surya Narayan Sahoo, Sanchari Chakraborti, Som Kanjilal, Saumya Ranjan Behera, Dipankar Home, Alex Matzkin, Urbasi Sinha   +6 more
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Quantum speed limits for observables

Physical Review A, 2022
In the Schr{ö}dinger picture, the state of a quantum system evolves in time and the quantum speed limit describes how fast the state of a quantum system evolves from an initial state to a final state. However, in the Heisenberg picture the observable evolves in time instead of the state vector.
Brij Mohan, Arun Kumar Pati
openaire   +2 more sources

Direct Observation of Quantum Anomalous Vortex in Fe(Se,Te)

Physical Review X, 2023
Vortices are topological defects of type-II superconductors in an external magnetic field. In a similar fashion to a quantum anomalous Hall insulator, quantum anomalous vortices (QAV) spontaneously nucleate due to orbital-and-spin exchange interaction ...
Y. S. Lin, S. Y. Wang, X. Zhang, Y. Feng, Y. P. Pan, H. Ru, J. J. Zhu, B. K. Xiang, K. Liu, C. L. Zheng, L. Y. Wei, M. X. Wang, Z. K. Liu, L. Chen, K. Jiang, Y. F. Guo, Ziqiang Wang, Y. H. Wang   +17 more
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Observation and Quantum Objectivity [PDF]

Philosophy of Science, 2013
Abstract The paradox of Wigner’s friend challenges the objectivity of quantum theory. A pragmatist interpretation can meet this challenge by judicious appeal to decoherence. Quantum theory provides situated agents with resources for predicting and explaining what happens in the physical world—not conscious observations of it.
openaire   +3 more sources

Interacting Quantum Observables

, 2008
We formalise the constructive content of an essential feature of quantum mechanics: the interaction of complementary quantum observables, and information flow mediated by them. Using a general categorical formulation, we show that pairs of mutually unbiased quantum observables form bialgebra-like structures.
Bob Coecke, Ross Duncan
openaire   +2 more sources

Integrated quantum polariton interferometry

Communications Physics, 2022
Recently, observation of low-density polaritons in the quantum regime has prompted interest beyond their collective behavior. Here, an integrated quantum logic device that relies on two-body polaritonic interaction is proposed theoretically.
Davide Nigro, Vincenzo D’Ambrosio, Daniele Sanvitto, Dario Gerace   +3 more
doaj   +1 more source