2013/06/05 by Yujiro Eto, Hayato Ikeda, Hirosuke Suzuki +5 · 2 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Magnetic field #Magnetometer #Noise (video) #Physics #Quantum mechanics #Sensitivity (control systems) #Spin (aerodynamics) #Spinor #cond-mat.quant-gas #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physreva.88.031602
5 pages, 5figures
arxiv created 2013/06/05 · openalex publication_date 2013/09/05 · arxiv updated 2015/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate detection of a weak alternate-current magnetic field by application of the spin-echo technique to F=2 Bose-Einstein condensates. A magnetic field sensitivity of 12 pT/√(Hz) is attained for an atom number of 5\ifmmode×\else\texttimes\fi103 at a spatial resolution of 100 \ensuremathμm2. Our observations indicate magnetic field fluctuations synchronous with the power supply line frequency. We show that this noise is greatly suppressed by application of a reverse phase magnetic field. Our technique is useful in order to create a stable magnetic field environment, which is an important requirement for atomic experiments which require a weak bias magnetic field.