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Physics Programs & Projects

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Single photon measurements: Single Photon Tunneling
Last Updated Date: 10/01/2015

We use light created two photons at a time to explore the time needed to cross a barrier. The extreme simultaneity of creation of the two photons … more

Multi-Photon Laser Cooling
Last Updated Date: 09/29/2015

Laser cooling of atoms is a powerful and widely used tool in atomic physics. Traditional laser cooling relies primarily on the mechanical effect of … more

Quantum Computation and Simulation with Neutral Atoms
Last Updated Date: 09/29/2015

Quantum information processing seeks to use the features of quantum physics to accomplish otherwise intractable computational tasks. The two main … more

Quantum Physics Theory
Last Updated Date: 09/25/2015

Theoretical work relevant to the determination of values of the fundamental constants, tests of bound-state quantum electrodynamics (QED), and … more

International System of Units (SI)
Last Updated Date: 09/25/2015

The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which … more

CODATA values of the fundamental constants
Last Updated Date: 09/24/2015

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The … more

Newtonian constant of gravitation international consortium
Last Updated Date: 09/23/2015

The Newtonian constant of gravitation G is one of the most fundamental constants of classical physics. Recent measurements of G are in … more

Degradation of extreme-ultraviolet optics
Last Updated Date: 09/23/2015

Optical systems that operate at wavelengths in the ultraviolet (UV) and extreme-ultraviolet (EUV) are susceptible to degradation by a number of … more

Metrology for extreme ultraviolet lithography
Last Updated Date: 09/23/2015

Much of the activity of the UV Physics Group is aimed at supporting the R&D effort by the microelectronics industry to develop Extreme … more

Radiation Thermometry
Last Updated Date: 09/17/2015

Calibration standards for radiation thermometry are disseminated in the form of radiation thermometers, tungsten strip lamps and blackbodies. … more

Last Updated Date: 09/17/2015

The NIST Thermodynamic Metrology Group maintains and develops national standards of temperature (in the range 0.65 K to 1235 K), and supports … more

Radioactivity Standard Reference Material Program
Last Updated Date: 09/16/2015

The Standard Reference Materials Program of the National Institute of Standards and Technology (NIST) provides science, industry, and government … more

Frequency Measurement and Analysis Service (FMAS)
Last Updated Date: 09/15/2015

The NIST Frequency Measurement and Analysis Service (FMAS) makes it easy to measure and calibrate any quartz, rubidium, cesium, or hydrogen maser … more

Time Measurement and Analysis Service (TMAS)
Last Updated Date: 09/15/2015

The NIST Time Measurement and Analysis Service (TMAS) was designed to assist laboratories that maintain an accurate local time standard. The … more

Spinor Condensates and Ultracold Collisions
Last Updated Date: 09/15/2015

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

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