Suppression of spin-bath and low-frequency noise for submegahertz ac magnetometry based on a doubly dressed spin qubit in diamond

Authors
Kihwan KimYisoo NaJungbae YoonDongkwon LeeHee Seong KangChul-Ho LeeChulki KimDonghun Lee
Issue Date
2025-06
Publisher
American Physical Society
Citation
Physical Review Applied, v.23, no.6
Abstract
We experimentally demonstrate a protocol that effectively suppresses low-frequency noise, including the qubit-bath interaction in diamond. This enables the detection of ac signals below 1 MHz with an increased signal-to-noise ratio of up to approximately 17. The method is based on ac magnetometry with single- and doubly dressed states, which are adiabatically transferred from the initial bare qubit states via concatenated continuous dynamical decoupling. We compare the dressed-state protocols with a conventional pulsed dynamical decoupling method, XY16. This work paves an alternative way toward the sensitive detection of weakly coupled nuclear spins in low-field NMR experiments and submegahertz ac magnetometry.
URI
https://pubs.kist.re.kr/handle/201004/152584
DOI
10.1103/PhysRevApplied.23.064004
Appears in Collections:
KIST Article > Others
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE