Single-shot vector magnetic measurements using synchronous coherent population trapping resonance in a feedback compensation system
Abstract
We demonstrate a real-time, single-shot vector magnetic measurement technique using synchronous coherent population trapping (SCPT) in an apparatus consisting of a small rubidium vapor cell. Vector modality of our magnetometer is enabled by designing a feedback system based on performing a peak-lock on a particularly strong 2ΩL magnetic resonance produced in the SCPT spectrum and compensating the external magnetic field via a three-axis field coil. With its current design, this magnetometer exhibits high sensitivities of approximately 155, 129, and 57pT/Hz in measuring the magnetic field vector components along the (x,y,z) axes. Sensitivities closer to the shot-noise limit can be achieved in the future by reducing the technical noise of our equipment and by employing a differential detection and polarization rotation measurement scheme in our system.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 10, 2023
- Source ID
- 10.1063/5.0168122
Entities
People
- G. S. Pati
- Mauricio Pulido
- Renu Tripathi
Organizations
- Delaware State University
- United States Department of Defense