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Physics Programs & Projects

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Yb Lattice Clock
Last Updated Date: 07/15/2015

Our Group is developing high stability, high accuracy optical atomic clocks based on thousands of Yb atoms confined to an optical lattice. Such … more

Si-Based Single Spin Coherence and Manipulation
Last Updated Date: 07/15/2015

We are characterizing Si-based single-electron quantum dots at low temperatures (down to 10 mK) to explore the possibility of quantum coherent … more

Silicon-based single electron current standards
Last Updated Date: 07/15/2015

We are working to fabricate and perform low-temperature measurements of CMOS-compatible single electron devices in silicon which could be used as … more

Modeling and Simulation of Nanofabrication (Archived)
Last Updated Date: 07/15/2015

Most manufacturing has historically been based on top-down fabrication and assembly. With rapid advances in nanotechnology, there is increasing … more

Spinor Condensates and Ultracold Collisions
Last Updated Date: 07/10/2015

Interactions between cold atoms can provide us with the means to manipulate matter on the smallest scales. Collisions between laser-cooled atoms, … more

Nonlinear Optics and Non-classical Light
Last Updated Date: 07/10/2015

Nonlinear optics provides a way to generate light with different frequencies and different quantum statistical properties. We have developed a … more

Color and appearance
Last Updated Date: 07/10/2015

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, … more

Fabrication and Metrology of Novel Magnetic Tunnel Junctions in the Ultra-thin Barrier Limit
Last Updated Date: 07/07/2015

Magnetic tunnel junctions, nanostructured by highly charged ions, are being probed and characterized to establish the foundation for novel … more

Applications of Quantum Information
Last Updated Date: 07/07/2015

Theory is being developed and used to devise methods for preserving and exploiting the quantum behavior of ever-larger systems for metrology, … more

Key Comparison for Air-Kerma From Therapy Level and Radiation Protection Gamma-Ray Beams
Last Updated Date: 07/06/2015

Comparisons for the national standards of air kerma from therapy level and radiation protection gamma-ray beams were conducted by the NIST and the … more

Characterization of Dosimeters Used in Computed Tomography
Last Updated Date: 07/06/2015

In an effort to both reduce and improve the monitoring of radiation dose delivered to patients during computed tomography (CT) procedures, the … more

Air Kerma Calibrations in Radiation Protection Level 137Cs and 60Co Gamma Ray Beams
Last Updated Date: 07/06/2015

The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137 Cs and 60 Co gamma-ray beams … more

Design and Construction of a New Cs-137 Gamma-ray Calibration Facility
Last Updated Date: 07/06/2015

The construction of a new primary calibration facility for air kerma measurements has been completed. It delivers a collimated 137 Cs gamma-ray … more

International Comparisons for Air Kerma and Absorbed Dose to Water from Gamma-ray Beams
Last Updated Date: 07/06/2015

A bilateral comparison was conducted between NIST and the International Atomic Energy Agency (IAEA) to support international efforts for … more

Absorbed Dose to Water and Air Kerma Calibrations in Co-60 Therapy Level Gamma-Ray Beams
Last Updated Date: 07/06/2015

Three dosimetry calibration laboratories accredited by the American Association of Physicists in Medicine (AAPM) routinely perform calibrations of … more

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