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Projects/Programs

Topic Area
Displaying 376 - 400 of 469
Boulder Cryogenic Quantum Testbed

Quantum Characterization

Ongoing
The BCQT serves as a resource to academic and industry quantum research groups for measurement of superconducting microwave resonators in a well-characterized cryogenic environment using traceable, open-source methods developed in broad consultation with companies, universities, and NIST. This
Quantum Computations in Optical Lattices

Quantum Computation and Simulation with Neutral Atoms

Ongoing
Advances in quantum information have the potential to significantly improve sensor technology, complete computational tasks unattainable by classical means, provide understanding of complex many-body systems, and yield new insight regarding the nature of quantum physics. At NIST and around the world
This image shows a planar rf ion trap designed for experiments with magnetically-driven quantum gates.

Quantum Computing with Trapped Ions

Ongoing
Quantum Computing with Trapped Ions We pursue proof-of-concept experiments in quantum information processing and quantum control with trapped ions. In addition to pushing current limits on traditional quantum gate-based architectures for quantum computing we explore alternative approaches to
Example of a star-mesh device design

Quantum Conductance

Ongoing
The quantum Hall effect (QHE), and devices that exhibit it, will continue to serve as the foundation of the ohm while also expanding its territory into other SI derived units. The world adopted the quantum SI in 2019, and it remains essential that the global metrology community pushes forth and
AMO physics

Quantum Many-Body Physics, Quantum Optics, and Quantum Information

Ongoing
Differences between typical AMO and condensed matter systems bring with them exciting new physics. In contrast to condensed matter systems, AMO systems are often studied far out of equilibrium, are evolving in time, and are subject to dissipation. As a result, many-body AMO systems open a whole new
chip experiment

Quantum matter from atomic gases

Ongoing
Ultracold atoms are a very different sort of system than conventional materials, composed of a few hundred to a few hundred million atoms, with densities ranging from 10 12 cm -3 to 10 15 cm -3, and at temperatures from below 1 nK to a couple uK. These atomic systems are unique in the simplicity of
ion trap with integrated fiber Fabry-Perot cavity

Quantum Networking with Trapped Ions

Ongoing
The goal of a quantum network is to establish entanglement as a resource between distant locations. Shared entanglement over long distances may enable distributed quantum computing, quantum-enhanced long-baseline interferometry, the transmission of complex quantum states, or a variety of other

Quantum Nonlinear Optics for Metrology and Networking

Completed
We have generated "twin beams" of light using four-wave mixing (4WM) that are correlated at a level better than can be displayed by classical radiators. One particularly useful feature of the 4WM technique is that the light can easily be made in multiple spatial modes. That is, images with quantum
FLOC

Quantum Pascal: Fixed Length Optical Cavity (FLOC) Pressure Standards

Ongoing
This project enables a quantum-based, SI-traceable method for realizing the pascal (Pa) while improving accuracy and allowing the replacement of existing mercury manometer pressure standards. The Fixed Length Optical Cavity (FLOC) pressure standard is a laser-based, SI-traceable primary pressure

Quantum Physics Theory

Ongoing
The scope of the work ranges from calculations of QED effects in atoms to detailed studies of photon wave functions.
equipment

Quantum Radiometry

Ongoing
For quantum applications, it is important to generate quantum states of light and detect them with extremely high efficiency. This project explores the metrology challenges associated with precision measurement of single photon sources and detectors. The classical photonic radiometry techniques used

Quantum Simulation and Sensing with Trapped Ions

Ongoing
Entanglement between individual quantum objects exponentially increases the complexity of quantum many-body systems, so systems with more than 30-40 quantum bits cannot be fully studied using conventional techniques and computers. To make progress at this frontier of physics, we are pursuing Feynman

Quantum State-Resolved Spectroscopic Techniques

Ongoing
Terahertz radiation interrogates the lowest frequency vibrational (phonon) modes of biomolecules. These modes characterize the incipient motions for large-scale conformational changes responsible for the backbone flexibility of protein, polynucleotide and polysaccharide. Thus, terahertz spectral
Measuring interactions between chiral edge states. 2D heterostructure (left); magnetoresistance data (right).

Quantum Transport Measurements

Ongoing
It is necessary to isolate, control, and understand the fundamental physics of exotic states of matter to create nanoengineered systems with the requisite quantum properties for quantum information systems and advanced computing applications. We develop measurement capabilities and design test
modulation

Quantum Waveform Metrology

Ongoing
The recent redefinition of the SI was motivated in part by the success of quantum-based electrical standards, such as those based on the Josephson effect. Quantum standards enable the direct realization of physical quantities that are traceable to fundamental constants, invariant with respect to
Photo of DT702

Radiation Protection: Support of the Navy Dosimetry Program

Ongoing
Since 2010, the U.S. Navy has adopted a personal dosimeter designated as the model DT-702/PD, which was demonstrated to have an improved accuracy, energy discrimination and a lower detection limit than prior Navy designated models such as the DT-5XX/PD and DT-6XX/PD series. This dosimeter is used to
Thermoluminescent Dosimeter (TLD) Card

Radiation Sensitivity of Thermoluminescent Dosimeter Sensors

Completed
The radiation sensitivity of a Thermoluminescent Dosimeter (TLD) is defined as dosimeter light output per dose unit. TLD light output depends not only on the sensitivity of the TLD elements (Fig.1) but also on the transparency of the Teflon® used for their encapsulation. The effect of encapsulation
radiation thermometry

Radiation Thermometry

Ongoing
Radiation thermometers are calibrated using a range of variable-temperature blackbodies. For heatpipe blackbodies and fluid-stirred blackbodies, the temperatures of these blackbodies are determined using platinum resistance thermometers. These blackbodies can also be assigned temperatures using

Raman Metrology and Instrumentation

Ongoing
Raman spectroscopy/microscopy is a powerful optical technique for rapid, non-destructive, label-free characterization of materials. It works under ambient conditions, often without requirement of any sample preparation. Applications span microelectronics, pharmaceutical, security and fundamental
deadweight

Reconditioning of the 4.45 MN deadweight machine

Completed
The 4.45 MN DWM has been in use in the NIST Force Laboratory since 1965 and is frequently characterized as the largest deadweight force standard in the world. Thousands of measurements through many force calibrations have been performed over the lifespan of the machine. The machine was the
skin reflectance graphs

Reflectance Measurements of Human Skin

Ongoing
Investigations of the optical properties of human skin have largely been limited to the visible part of the electromagnetic spectrum, whereas many applications require high-quality reflectance data in the near infrared and short-wave infrared. Further, the complex and dynamic nature of skin results
Alex Rodriguez with data logger

Reliable Vaccine Storage

Completed
Our group examines best practices for the storage and monitoring of vaccines in partnership with the Centers for Disease Control and Prevention’s (CDC) Vaccine Supply and Assurance Branch. Vaccines are highly temperature sensitive, and inappropriate storage conditions can render them ineffective
lamp/plaque method

Remote Sensing Laboratory

Ongoing
The Remote Sensing Laboratory (RSL) is designed to address Earth-oriented remote sensing radiometry for the spectral region from the ultraviolet (UV) to the short wave infrared (SWIR), or 250 nm to 2500 nm. For spectral radiance, several lamp-illuminated integrating sphere sources are arranged
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