Results 81 to 90 of about 31,457 (170)

Efficient algorithm for optimizing data pattern tomography

, 2014
We give a detailed account of an efficient search algorithm for the data pattern tomography proposed by J. Rehacek, D. Mogilevtsev, and Z. Hradil [Phys. Rev. Lett.~\textbf{105}, 010402 (2010)], where the quantum state of a system is reconstructed without
Harder, G., Hradil, Z., Karasek, V., Mogilevtsev, D., Motka, L., Rehacek, J., Sanchez-Soto, L. L., Silberhorn, C., Stoklasa, B.   +8 more
core   +1 more source

Full characterization of a three-photon GHZ state using quantum state tomography

, 2004
We have performed the first experimental tomographic reconstruction of a three-photon polarization state. Quantum state tomography is a powerful tool for fully describing the density matrix of a quantum system.
A. Zeilinger, D. M. Greenberger, I. L. Chuang, J. Bell, K. J. Resch, P. Walther   +5 more
core   +1 more source

Experimental Quantum Detector Tomography

, 2016
We present the first quantum tomography of a detector, using as examples an avalanche photodiode and a photon-number resolving detector. The resulting POVM set agrees well with one derived from a model of the detector. © 2008 Optical Society of America.
Coldenstrodt-Ronge, H, Lundeen, J, Pregnell, K, Feito, A, Smith, B, Silberhorn, C, Eisert, J, Plenio, M, Walmsley, I, IEEE   +9 more
openaire   +1 more source

Enhancing high-energy powder X-ray diffraction applications using a PILATUS4 CdTe detector

Journal of Synchrotron Radiation
Hybrid photon counting detectors have significantly advanced synchrotron research. In particular, the introduction of large cadmium telluride-based detectors in 2015 enabled a whole new range of high-energy X-ray measurements.
Tilman Donath, Sofia Trampari, Lucas Wagner, Mads R. V. Jørgensen, Frederik H. Gjørup, Stefano Checchia, Marco Di Michiel, Emmanuel Papillon, Gavin Vaughan   +8 more
doaj   +1 more source

High-Fidelity, Multiqubit Generalized Measurements with Dynamic Circuits

PRX Quantum
Generalized measurements, also called positive operator-valued measures (POVMs), can offer advantages over projective measurements in various quantum information tasks. Here, we realize a generalized measurement of one and two superconducting qubits with
Petr Ivashkov, Gideon Uchehara, Liang Jiang, Derek S. Wang, Alireza Seif   +4 more
doaj   +1 more source

Quantum Edge Detection on Industrial X-ray Data via Quantum Circuits

e-Journal of Nondestructive Testing
Edge detection is a vital component of industrial image-processing and evaluation workflows, particularly in X-ray computed tomography (XCT), where it underpins segmentation, feature extraction, and defect localization.
Anastasia Papadaki, Thomas Lang, Martin Blaimer, Anja Heim, Kilian Dremel, Dimitri Prjamkov, Markus Firsching, Stefan Kasperl, Theobald O.J. Fuchs   +8 more
doaj   +1 more source

Extending the quantum tomography of a quasi-photon-number-resolving detector

Optics Express
The ability to discriminate the number of photons in a radiation field has a critical role in the implementation of quantum optical technologies. True photon-number-resolving detectors are rare and complex devices, while a quasi-photon-number-resolving detector (qPNRD) is a practical alternative for real-world applications.
Ted S. Santana, Christian Daniel Muñoz, Robert A. Starkwood, Christopher J. Chunnilall   +3 more
openaire   +2 more sources

Low-dose, high-resolution CT of infant-sized lungs via propagation-based phase contrast

Scientific Reports
Many lung diseases require high-resolution imaging for accurate diagnosis and treatment. Computed tomography (CT) is the gold-standard technique for non-invasive lung disease detection, but it presents a risk to the patient through the relatively high ...
James A. Pollock, Kaye Morgan, Linda C. P. Croton, Emily J. Pryor, Kelly J. Crossley, Christopher J. Hall, Daniel Häusermann, Anton Maksimenko, Stuart B. Hooper, Marcus J. Kitchen   +9 more
doaj   +1 more source

Visibility of Intracranial Perforating Arteries Using Ultra-High-Resolution Photon-Counting Detector Computed Tomography (CT) Angiography

Tomography
Background/Objectives: Photon-counting detector computed tomography (PCD-CT) offers energy-resolved CT data with enhanced resolution, reduced electronic noise, and improved tissue contrast.
Takashi Okazaki, Tetsu Niwa, Ryoichi Yoshida, Takatoshi Sorimachi, Jun Hashimoto   +4 more
doaj   +1 more source

Tomography of quantum detectors using neural networks

IFAC-PapersOnLine, 2023
Hailan Ma, Shuixin Xiao, Daoyi Dong, Ian R. Petersen   +3 more
openaire   +1 more source