The paper proposes a portable quantum magnetometer architecture using chip-scale maser technology combined with SERF atomic vapor sensing, targeting sensitivities below 10fT/√Hz with compact form factor. The design includes a microfabricated 87Rb vapor cell coupled to a superconducting microwave cavity for active maser oscillation, with key innovations in dual-mode operation, MEMS-compatible fabrication, photonic integrated circuits, and advanced noise suppression.
Key findings
Proposes a portable quantum magnetometer with femtotesla sensitivity and absolute accuracy.
Utilizes chip-scale maser technology combined with SERF atomic vapor sensing.
Targets magnetic field sensitivities below 10fT/√Hz with a compact form factor.
Includes a microfabricated 87Rb vapor cell coupled to a superconducting microwave cavity.
Key innovations are dual-mode operation, MEMS-compatible fabrication, and photonic integrated circuits.
Limitations & open questions
The proposed device is still in the research and development phase.
Validation against established technologies is part of the future work.