Results 81 to 90 of about 12,176,929 (371)
Quantum Information Hidden in Quantum Fields [PDF]
Quantum Reports, 2020 We investigate a possible reduction mechanism from (bosonic) Quantum Field Theory (QFT) to Quantum Mechanics (QM), in a manner that could explain the apparent loss of degrees of freedom of the original theory in terms of quantum information in the reduced one. This reduction mechanism consists mainly of performing an ansatz on the boson field operator,
openaire +3 more sources
, 2020 Semiconductor quantum dots (QDs) of various material systems are being heavily researched for the development of solid state single photon emitters, which are required for optical quantum computing and related technologies such as quantum key ...
Y. Arakawa, M. Holmes
semanticscholar +1 more source
, 2012 Quantum information theory is the study of the achievable limits of information processing within quantum mechanics. Many different types of information can be accommodated within quantum mechanics, including classical information, coherent quantum information, and entanglement.
Michael A. Nielsen, Isaac L. Chuang
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Loop Quantum Gravity and Quantum Information
, 2023 We summarize recent developments at the interface of quantum gravity and quantum information, and discuss applications to the quantum geometry of space in loop quantum gravity. In particular, we describe the notions of link entanglement, intertwiner entanglement, and boundary spin entanglement in a spin-network state.
Bianchi, Eugenio, Livine, Etera R.
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Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study evaluates a novel cone‐beam computed tomography (CBCT) imaging solution integrated onto a conventional C‐arm linear accelerator (linac) with increased gantry speed. The purpose is to assess the impact of improved imaging hardware and reconstruction algorithms on image quality.
Theodore Arsenault +9 more
wiley +1 more source
Quantum State Disturbance vs. Information Gain: Uncertainty Relations for Quantum Information
, 1995 When an observer wants to identify a quantum state, which is known to be one of a given set of non-orthogonal states, the act of observation causes a disturbance to that state. We investigate the tradeoff between the information gain and that disturbance.
A. K. Ekert +16 more
core +1 more source
Practical Real-Time Phase Drift Compensation Scheme for Quantum Communication Systems
Entropy, 2023 Quantum communication systems are susceptible to various perturbations and drifts arising from the operational environment, with phase drift being a crucial challenge.
Xiaotian Song +6 more
doaj +1 more source
A method for measuring spatial resolution based on clinical chest CT sequence images
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study aimed to develop and validate a method for characterizing the spatial resolution of clinical chest computed tomography (CT) sequence images. Methods An algorithm for characterizing spatial resolution based on clinical chest CT sequence images was developed in Matlab (2021b).
Ying Liu +3 more
wiley +1 more source
Quantum Information Processing and Relativistic Quantum Fields
, 2014 It is shown that an ideal measurement of a one-particle wave packet state of a relativistic quantum field in Minkowski spacetime enables superluminal signalling. The result holds for a measurement that takes place over an intervention region in spacetime
Aharonov Y +16 more
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Cosmology from Quantum Information
, 2020 We describe inflation in terms of a time dependent quantum density matrix with time playing the role of a stochastic variable. Using a quasi-de Sitter model we compute the corresponding quantum Fisher information function as the second derivative of the ...
Gomez, Cesar, Jimenez, Raul
core +1 more source