Title: NIST Physicist Julia Scherschligt Develops Cold-Atom Vacuum Standard for Quantum Applications
Summary:
NIST physicist Julia Scherschligt and her team have developed a groundbreaking method called the Cold-Atom Vacuum Standard (CAVS) that utilizes quantum physics principles to measure ultralow vacuum pressures. The technique involves injecting a cloud of ultracold lithium atoms into a vacuum chamber, where their glow intensity is affected by collisions with particles in the chamber. By measuring this intensity reduction, researchers can determine the rate of atoms leaving the trap and accurately calculate vacuum pressure.
The CAVS method is a primary standard, relying on well-established quantum mechanics principles without requiring external calibration. It provides reliable, consistent pressure measurements that can be linked to the basic units of pressure in the SI metric system. This innovative approach has potential applications in maintaining controlled vacuum environments for quantum computing and advanced computer chip manufacturing.
Julia Scherschligt emphasizes the democratizing effect of quantum technologies, stating that they provide equal access to fundamental measurement tools, leveling the playing field for various scientific and technological applications.
Keywords: vacuum, standard, pressure, quantum, calibration
