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37 results for “quantum measurement”
Verifiable measurement-based quantum random sampling with trapped ions
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Measurement-free, scalable and fault-tolerant universal quantum computing
<p>The repository is supporting the publication "Measurement-free, scalable and fault-tolerant universal quantum computing". </p> <p>It includes the data shown in the manuscript as well as the simulation code and circuits that were used to obtain this data. </p>
Measuring the Capabilities of Quantum Computers
<p>This is supplemental data and code for: T. Proctor et al., <em><a href="https://www.nature.com/articles/s41567-021-01409-7">Measuring the Capabilities of Quantum Computers</a>,</em> Nature Physics <strong>18</strong>, 75-79 (2022).</p> <p>This folder contains all the data and the analysis code to generate the results presented in that paper. The core data analysis routines use PyGSTi, which can be found at <a href="https://github.com/pyGSTio/pyGSTi">https://github.com/pyGSTio/pyGSTi</a>.</p> <p>Please direct any questions to Timothy Proctor (tjproct@sandia.gov).</p>
Data for: Fluid fermionic fragments for optimizing quantum measurements of electronic Hamiltonians in the variational quantum eigensolver
<p>Data for publication: S. Choi, I. Loaiza, and A. F. Izmaylov, "Fluid fermionic fragments for optimizing quantum measurements of electronic Hamiltonians in the variational quantum eigensolver" arXiv:2208.14490 (2022).</p> <p> </p> <p> </p>
Coincidence measurements of two quantum-correlated photon pairs widely separated in the frequency domain
<p>Quantum correlation is a key concept characterizing the properties of quantum light sources and is important for developing quantum applications with superior performance. In particular, it enables photon pairs that are widely separated in the frequency domain, one in the visible region, the other in the infrared region, to be used for quantum infrared sensing without direct detection of infrared photons. Here, simultaneous multiwavelength and broadband phase matching in a nonlinear crystal could provide versatile photon-pairs source for broadband infrared quantum sensing. This paper describes direct generation and detection of two quantum-correlated photon pairs produced via simultaneous phase-matched processes in periodic crystals. These simultaneous photon pairs provide a correlated state with two frequency modes in a single pass. To confirm the correlation, we constructed an infrared-photon counting system with two repetition-synchronized fiber lasers. We performed coincidence measurements between two pairs, 980 nm and 3810 nm, and 1013 nm and 3390 nm, which yielded coincidence-to-accidental ratios of 6.2 and 6.5, respectively. We believe that our novel correlated light source with two separate pairs in the visible and infrared region complements a wide-range of multi-dimensional quantum infrared processing applications.</p>
Data from: Species distributions, quantum theory, and the enhancement of biodiversity measures
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Dataset for Noisy quantum metrology enhanced by continuous nondemolition measurement
<p>Datasets used for generating the figures.</p> <p>Please see included <strong>README.md</strong>.</p>
State of polarization measurements in quantum channel
<p>The dataset contains simulated measurements of the polarization state of the received photons in the case that the quantum channel is affected by both environmental events and eavesdropping.</p>
Quantum memristor experiment - Raw measurement data
<p>Raw data from photonic quantum memristor experiment.</p>
Dataset for Increasing the Measured Effective Quantum Volume with Zero Noise Extrapolation
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Replication Data for: Characterising transport in a quantum gas by measuring Drude weights
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Quantum information phases in space-time: measurement-induced entanglement and teleportation on a noisy quantum processor
<p>Data for the manuscript at https://arxiv.org/abs/2303.04792</p>
ATom: Measurements from the Quantum Cascade Laser System (QCLS), Version 2
This dataset provides atmospheric concentrations of CO2, CH4, CO, and N2O measured by the Harvard Quantum Cascade Laser System (QCLS) instruments during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. The QCLS (DUAL and CO2) instrument package contains two separate optical assemblies and calibration systems, and a common data system and power supply. The QCLS DUAL instrument simultaneously measures CO, CH4, and N2O concentrations, in situ, using two thermoelectrically cooled pulsed-quantum cascade lasers light sources, a multiple pass absorption cell, and two liquid nitrogen-cooled solid-state detectors. The QCLS CO2 instrument measures CO2 concentrations in situ using a thermoelectrically cooled pulsed-quantum cascade laser light source, gas cells, and liquid nitrogen cooled solid-state detectors. The CO2 mixing ratio of air flowing through the sample gas cell is determined by measuring absorption from a single infrared transition line at 4.32 microns relative to a reference gas of known concentration.
Supporting data for "Repetitive Quantum Nondemolition Measurement of a Silicon Spin Qubit Using..."
<p>Supporting data for "Repetitive Quantum Nondemolition Measurement of a Silicon Spin Qubit Using Different Decodings"</p> <p>Data for Fig.2-3 are in the file 'QND_data'.</p> <p>To run the scripts, QCoDeS needs to be installed. Please refer to:</p> <p>http://qcodes.github.io/Qcodes/</p> <p>for instructions about installation and Dataset. If there's a problem, try to use an earlier version 0.1.7.</p> <p>For more information, contact the author: Xiao Xue, x.xue-1@tudelft.nl </p>
Dataset for "Quantum paraelectric varactors for radiofrequency measurements at millikelvin temperatures"
<p>Dataset for "Quantum paraelectric varactors for radiofrequency measurements at millikelvin temperatures"</p>
Measurement dataset for Impedance Standard Substrate Characterization and EM model Definition for Cryogenic and Quantum-Computing Applications
<p>dataset for the data presented in the paper "Impedance Standard Substrate Characterization and EM model definition for Cryogenic and Quantum-Computing Applications"</p> <p>In this contribution, we describe the modeling approaches and the characterization procedures used to develop accurate standard models for cryogenic, probe-level, calibrations substrates.The key electrical and mechanical parameters of the impedance terminations and the lines used in commercially available impedance standard substrates are first characterized versus temperature. After, these component are simulated using 2.5D EM solvers including their mechanical variation when exposed to cryogenic temperatures, to extract their nominal response at 7 Kelvin. The quality of the resulting calibrations at cryogenic is evaluated first using independent CPW lines on the calibration substrates and then by measuring the response of a transformer-based resonator realized on a Si-based technology.Ambient temperature models are used as a comparison, to highlight the accuracy improvement that can be achieved employing optimized Cryo-EM based models.</p>
Datasets of M. Marzano et al, Acta Imeko 10 (2021), "Design and development of a coaxial cryogenic probe for precision measurements of the quantum Hall effect in the AC regime"
<p>Compilation of the datasets used to generate the figures in the following journal publication: </p> <p>"Design and development of a coaxial cryogenic probe for precision measurements of the quantum Hall effect in the AC regime"</p> <p>by M. Marzano, N.T. Mai Tran, V. D'Elia, D. Serazio, E. Enrico, M. Ortolano, K. Pierz , J. Kučera, L.Callegaro,</p> <p>Acta Imeko 10 (2021),</p> <p>DOI:10.21014/acta_imeko.v10i2.925</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.