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|Abstract:||Scalar atomic magnetometers have many attractive features but their sensitivity has been relatively poor. We describe a Rb scalar gradiometer using two multipass optical cells. We use a pump-probe measurement scheme to suppress spin-exchange relaxation and two probe pulses to find the spin precession zero crossing times with a resolution of 1 psec. We realize a magnetic field sensitivity of 0: 54 fT/Hz(1/2), which improves by an order of magnitude the best scalar magnetometer sensitivity and exceeds, for example, the quantum limit set by the spin-exchange collisions for a scalar magnetometer with the same measurement volume operating in a continuous regime. DOI: 10.1103/PhysRevLett.110.160802|
|Electronic Publication Date:||18-Apr-2013|
|Citation:||Sheng, D, Li, S, Dural, N, Romalis, MV. (2013). Subfemtotesla Scalar Atomic Magnetometry Using Multipass Cells. PHYSICAL REVIEW LETTERS, 110 (10.1103/PhysRevLett.110.160802|
|Type of Material:||Journal Article|
|Journal/Proceeding Title:||PHYSICAL REVIEW LETTERS|
|Version:||Final published version. Article is made available in OAR by the publisher's permission or policy.|
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