A τ−1 measurement across three orders of magnitude based on an atomic spin precession magnetometer in self-sustaining mode
Source abstract
Abstract
The absolute measurement of magnetic fields can be realized by monitoring the Larmor precession of atomic spins. Yet, this spin-precession magnetometer can only be put into use in weak magnetic fields and the sensitivity is limited by the coherence time beyond which, the uncertainty decreases as τ−1/2 rate. Now we demonstrate that the dynamic range of an atomic spin magnetometer can be extended to geomagnetic field magnitude with τ−1 property maintained based on the the self-sustaining method. A mean sensitivity of 20 pT/Hz and a frequency response bandwidth of 5 kHz are realized in a magnetic field of 10000 nT. More important applications in large magnetic fields can be enabled in virtue of the superiority using this self-sustaining magnetometer.
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Research context
OpenAlex topics: Atomic and Subatomic Physics Research · Quantum optics and atomic interactions · Advanced MRI Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Joint Institute for Measurement Science (JMI), Tsinghua University 1 , Beijing 100084, China
Department of Precision Instrument, Tsinghua University 2 , Beijing 100084, China
Department of Physics, Tsinghua University 3 , Beijing 100084, China
State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University 4 , Beijing 100084, China
Funding
National Key Research and Development Program of China
References (19)
Show source-provided references
1. High-transition-temperature superconducting quantum interference devices10.1023/a:1009903428803 ↗
2. Design and operation of stable rf-biased superconducting point-contact quantum devices, and a note on properties of perfectly clean metal contacts10.1063/1.1659074 ↗
3. Optical magnetometry10.1038/nphys566 ↗
4. 2013
5. Ultrahigh sensitivity magnetic field and magnetization measurements with an atomic magnetometer10.1063/1.3491215 ↗
6. Limits on new long range nuclear spin-dependent forces set with a K−3He comagnetometer10.1103/physrevlett.103.261801 ↗
7. Test of Lorentz invariance with spin precession of ultracold neutrons10.1103/physrevlett.103.081602 ↗
8. An all-optical, high sensitivity magnetic gradiometer10.1007/s00340-002-0959-8 ↗
9. Cancellation technique of external noise inside a magnetically shielded room used for biomagnetic measurements10.1063/1.1150603 ↗
10. A subfemtotesla multichannel atomic magnetometer10.1038/nature01484 ↗
11. Vectorized magnetometer for space applications using electrical readout of atomic scale defects in silicon carbide10.1038/srep37077 ↗
12. Highly stable atomic vector magnetometer based on free spin precession10.1364/oe.23.022108 ↗
13. Three-stage decoherence dynamics of an electron spin qubit in an optically active quantum dot
14. Stabilizing Rabi oscillations in a superconducting qubit using quantum feedback
15. A self-sustaining atomic magnetometer with τ−1 averaging property10.1038/srep28169 ↗
16. Optically driven spin precession10.1103/physrevlett.6.280 ↗
17. S. J. Seltzer , Ph. D. thesis (Princeton University, 2008).
18. On a new class of self-referencing, 1/τ atomic clocks
19. An atomic self-sustaining magnetic gradiometer with a 1/τ uncertainty property based on Larmor precession10.1063/1.5003872 ↗