NIST Process for Purifying Entangled Ions (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption The NIST process for "purifying" an unusual property of quantum physics called entanglement involves illuminating two pairs of beryllium ions (charged atoms) with a series of ultraviolet laser pulses. Credit Bill Pietsch, Astronaut 3 Media Group Inc. Usage Restrictions Correct image credit must be provided. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.