Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Gaithersburg

Background on Quantum Key Distribution

Quantum encryption systems use lasers to generate individual pulses of light called photons. Each photon is sent in one of two modes, either vertical/horizontal...

OWM Newsletter Archive

The OWM Newsletter was previously named Measurement Matters and Weights and Measures Connection. Please see below for archived full editions...

April Conferences Focus on Scanning Advances

Since the advent of the scanning electron microscope (SEM) in the 1930s, that instrument and its many and diverse descendents—including atomic force, scanning...
Was this page helpful?