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Projects/Programs

Topic Area
Displaying 251 - 275 of 488

Interferometry: Quantum Error Coding in a 4-Blade Neutron Interferometer

Completed
Single crystal neutron interferometers are extremely sensitive to environmental noise, including vibrations. This sensitivity is a result of slow neutron velocity and the long measurement times. Most neutron interferometers require vibration isolation. Usually, massive systems are employed to damp...

Interferometry: Studying Quantum Materials using Neutron Interferometry

Ongoing
Neutron interferometry using perfect-silicon single crystals is a precision measurement technique that combines the neutron’s unique quantum nature with the neutron’s diverse set of interactions. Interferometry has traditionally been used in fundamental physics applications. However, there is...

Interferometry: Three-Dimensional Visualization of Magnetic Skyrmions

Ongoing
Magnetic Skyrmions are localized regions in a material where the atomic spins exhibit a defect swirling pattern (topological change equal to one). Skyrmions are unique because they behave like tiny, stable particles and require only ultralow current densities to manipulate. This makes them ideal...

International System of Units (SI)

Ongoing
Members of the Fundamental Constants Data Center (FCDC) participate in meetings of the Consultative Committee for Units (CCU) which advises the International Committee for Weights and Measures on matters concerning the SI. The latest meeting of the CCU, held at the BIPM in June of 2013 was attended...

Ion Traps

Ongoing
Trapped ions are sensitive to electric-field noise from trap-electrode surfaces. This noise has been an obstacle to progress in trapped-ion quantum information processing (QIP) experiments for more than a decade. It causes motional heating of the ions, and thus quantum-state decoherence. This...

Isotope Metrology

Ongoing
The application of isotope measurements drives advances in an enormous number of fields and stakeholder engagements, including federal and state government agencies, academia, and private industry including the medical industry. The objective of the NIST Isotope Metrology Program is to address the...

Johnson Noise Thermometry

Completed
The NIST Gaithersburg JNT project produces data useful for verification of the International Temperature Scale of 1990 (ITS-90) over a temperature range from 500 K to 930 K. This range overlaps those covered by other thermodynamic methods, most notably the upper-most range of Acoustic Thermometry...

Kinetic Inductance Spectrophotometry

Ongoing
The Kinetic Inductance Spectrophotometry Project is developing novel superconducting detector and readout technologies targeting next generation large-scale hyperspectral imaging applications. Within this application space, the transition-edge sensor (TES) microcalorimeter is the most mature...

Laser Power and Energy Meter Calibrations

Ongoing
We serve Industry, DoD, and research institutions by calibrating instruments used to measure the power or energy emitted by a laser, or single photon source. From Single Photons to Kilowatts, Longwave Infrared to Deep Ultraviolet, Free-space and Fiber, we can calibrate your instruments. The chart to...

Laser Stabilization and Coherence with Optical Resonators

Ongoing
Coherent laser interrogation of the narrowband electronic ‘clock’ transition is required to realize the very high spectroscopic resolution that make optical clocks so precise. At the same time, phase fluctuations in the laser interrogation can compromise the frequency stability of the optical clock...

Laser-wavelength conversion with nonlinear photonics

Ongoing
Many sophisticated technologies, including detection and characterization of biological samples, quantum sensing of magnetic and electric fields, time standards based on atomic clocks, and precision metrology, demand versatile laser sources spanning a broad range of wavelengths. Nonlinear optics...

SI Length and Traceability

Ongoing
Laser interferometry, which measures distances in terms of the wavelength of light, provides the backbone of top-level length metrology in industry and science. This project develops techniques to facilitate the tie between interferometer-based length measurements and the SI definition of length (in...

Light-matter interactions in Semiconductor Nanostructures

Ongoing
We investigate the interaction of light with semiconductor-based nanostructures. We extend concepts of entanglement and coherence in atomic physics to our solid-state systems. Our devices are based on semiconductors, like GaAs. We use InAs quantum dots (QDs) in GaAs as artificial atoms; they have...

Long Wavelength Sensors and Applications

Ongoing
Our project designs and micro-fabricates custom devices that achieve sensitivity at fundamental limits and are based on the principles of superconductivity. We often work in large collaborations to apply these devices to challenging measurements of high scientific interest, such as those which...

Low-Phase Noise Frequency Synthesis

Ongoing
Frequency synthesis plays an essential role in virtually all present-day commercial, industrial, and military technologies. State-of-the-art low-noise frequency synthesis is a crucial technical asset to high-resolution imaging and radar, high-speed telecommunications, and efficient management of the...

Lunar Spectral Irradiance (LUSI)

Ongoing
Earth observing satellite sensors were once the exclusive domain of large satellite platforms used by government agencies for the purpose of national security, defense, weather prediction and disaster mitigation. These satellites typically carry onboard radiometric calibrators that along with pre...

Machine Learning Driven Self-correcting Autonomous Metrology Systems (SAMS)

Ongoing
While NIST-on-a-Chip has produced quantum and nanophotonic measurement solutions that can significantly reduce calibration frequency, their transition from laboratory to marketplace depends on seamless integration into user workflows. Our research addresses a fundamental challenge: maintaining...

MAGIK Offspecular Reflectometer

Ongoing
Polarized-beam measurements are possible with the use of a 3He analyzer. This instrument is an evolution of the AND/R reflectometer, which was located on the NG-1 guide. MAGIK is located along the NG-D guide in the expanded guide hall (part of the NCNR's Expansion Initiative).

Magnetic Random Access Memory

Ongoing
Focus areas include (1) the fundamental understanding of the interactions between spin and magnetic materials and materials with large spin-orbit scattering; (2) the nonlinear dynamics of both individual and interacting nanoscale magnetic systems; and (3) the role of thermal noise in nanomagnetic...

Magnetic Resonance Imaging (MRI) Biomarker Measurement Service

Ongoing
Biomarkers are parameters that can be quantitatively measured in-vivo and provide information on tissue health/ pathology. Phantoms are medical imaging calibration structures designed to test scanner performance, image quality, and image-based measurements.

Magnetic Resonance Spectroscopy

Ongoing
Custom-built wafer level probes in position to perform EDMR measurements on fully processed transistors. Electronics are all around us and have completely reinvented nearly every aspect of our society. Virtually any system, large or small, contains some type of electronics that may or may not be...

Magnetic Sensing and Metrology

Ongoing
Magnetic sensors have a wide range of sensitivities, spatial resolution, dynamic range, bandwidths, size, and cost. Applications such as magnetic data storage and chip NDE require sensitivity of 1 nT, spatial resolution down to a few nanometers and bandwidths up to 10 GHz, while MEG requires...
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