Observation of quantum-measurement backaction with an ultracold atomic gas

• Published in: Nature physics Vol. 4; no. 7; pp. 561 - 564
• Main Authors: Murch, Kater W., Moore, Kevin L., Gupta, Subhadeep, Stamper-Kurn, Dan M.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.07.2008; Nature Publishing Group
• Subjects: Atomic; Classical and Continuum Physics; Complex Systems; Condensed Matter Physics; Fluctuations; Gases; Mathematical and Computational Physics; Measurement techniques; Molecular; Optical and Plasma Physics; Optical properties; Physics; Physics and Astronomy; Quantum theory; Temperature; Theoretical

Current research on micromechanical resonators strives for quantum-limited detection of the motion of macroscopic objects. Prerequisite to this goal is the observation of measurement backaction consistent with quantum metrology limits. However, thermal noise currently dominates measurements and prec...