TY - JOUR
T1 - Detection of a weak magnetic field via cavity-enhanced Faraday rotation
AU - Xia, Keyu
AU - Zhao, Nan
AU - Twamley, Jason
N1 - Xia, K., Zhao, N & Twamley, J. (2015). Detection of a weak magnetic field via cavity-enhanced Faraday rotation. Physical Review A, 92(4), 043409. Copyright (2015) by the American Physical Society. The original article can be found at http://dx.doi.org/10.1103/PhysRevA.92.043409.
PY - 2015/10/12
Y1 - 2015/10/12
N2 - We study the sensitive detection of a weak static magnetic field via Faraday rotation induced by an ensemble of spins in a bimodal degenerate microwave cavity. We determine the limit of the resolution for the sensitivity of the magnetometry achieved using either single-photon or multiphoton inputs. For the case of a microwave cavity containing an ensemble of nitrogen-vacancy defects in diamond, we obtain a magnetometry sensitivity exceeding 5.2nT/Hz utilizing a single-photon probe field, while for a multiphoton input we achieve a subfemtotesla sensitivity using a coherent-probe microwave field with power of Pin=1nW.
AB - We study the sensitive detection of a weak static magnetic field via Faraday rotation induced by an ensemble of spins in a bimodal degenerate microwave cavity. We determine the limit of the resolution for the sensitivity of the magnetometry achieved using either single-photon or multiphoton inputs. For the case of a microwave cavity containing an ensemble of nitrogen-vacancy defects in diamond, we obtain a magnetometry sensitivity exceeding 5.2nT/Hz utilizing a single-photon probe field, while for a multiphoton input we achieve a subfemtotesla sensitivity using a coherent-probe microwave field with power of Pin=1nW.
UR - http://www.scopus.com/inward/record.url?scp=84944394972&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/CE110001013
U2 - 10.1103/PhysRevA.92.043409
DO - 10.1103/PhysRevA.92.043409
M3 - Article
AN - SCOPUS:84944394972
SN - 1050-2947
VL - 92
SP - 1
EP - 8
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 043409
ER -