Nanoscale Vector dc Magnetometry via Ancilla-Assisted Frequency Up-Conversion
Name
PhysRevLett.122.100501.pdf
Size
342.85 KB
Format
Adobe PDF
Checksum (MD5)
2e5f493ae4a70ead7869dd78db08d278
Author(s)
Liu, Yixiang
Ajoy, Ashok
Cappellaro, Paola
Date Issued
March 2019
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Liu, Yi-Xiang et al. "Nanoscale Vector dc Magnetometry via Ancilla-Assisted Frequency Up-Conversion." Physical Review Letters 122, 10 (March 2019): 100501 © 2019 American Physical Society
Version
Final published version
Abstract
Sensing static magnetic fields with high sensitivity and spatial resolution is critical to many applications in fundamental physics, bioimaging, and materials science. Even more beneficial would be full vector magnetometry with nanoscale spatial resolution. Several versatile magnetometry platforms have emerged over the past decade, such as electronic spins associated with nitrogen vacancy (NV) centers in diamond. Achieving vector magnetometry has, however, often required using an ensemble of sensors or degrading the sensitivity. Here we introduce a hybrid magnetometry platform, consisting of a sensor and an ancillary qubit, that allows vector magnetometry of static fields. While more generally applicable, we demonstrate the method for an electronic NV sensor and a nuclear spin qubit. In particular, sensing transverse fields relies on frequency up-conversion of the dc fields through the ancillary qubit, allowing quantum lock-in detection with low-frequency noise rejection. In combination with the Ramsey detection of longitudinal fields, our frequency up-conversion scheme delivers a sensitive technique for vector dc magnetometry at the nanoscale.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.122.100501
