Difference between revisions of "Magnetometry"
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In this work they have noticed that magnetic field created by ac line disrupts their experiments, by applying a magnetic field with an opposite phase they reduce the noise to 1 nT. As a magnetometer they achieved 12 pT/sqrt(Hz) with spatial resolution 100 um^2. | In this work they have noticed that magnetic field created by ac line disrupts their experiments, by applying a magnetic field with an opposite phase they reduce the noise to 1 nT. As a magnetometer they achieved 12 pT/sqrt(Hz) with spatial resolution 100 um^2. | ||
| − | Technicalities. For the coils they use low ripple current source <2uA (Newport 505), they insert permalloy plates into the room walls. | + | '''<span style="color:DarkGreen"> Technicalities. </span>''' For the coils they use low ripple current source <2uA (Newport 505), they insert permalloy plates into the room walls. The BEC of <sup>87</sup>Rb is prepared in a crossed far-off resonant optical trap (FORT with w<sub>axial</sub>=30 Hz, w<sub>rad</sub>=100 Hz), 5*10<sup>3</sup> atoms are prepared in F=2. |
Revision as of 17:18, 28 December 2019
BEC
Spin-echo-based magnetometry with spinor Bose-Einstein condensates
In this work they have noticed that magnetic field created by ac line disrupts their experiments, by applying a magnetic field with an opposite phase they reduce the noise to 1 nT. As a magnetometer they achieved 12 pT/sqrt(Hz) with spatial resolution 100 um^2.
Technicalities. For the coils they use low ripple current source <2uA (Newport 505), they insert permalloy plates into the room walls. The BEC of 87Rb is prepared in a crossed far-off resonant optical trap (FORT with waxial=30 Hz, wrad=100 Hz), 5*103 atoms are prepared in F=2.
