Abstract
| Original language | English |
|---|---|
| Article number | 850 |
| Journal | Optica |
| Volume | 5 |
| Issue number | 7 |
| Number of pages | 7 |
| ISSN | 2334-2536 |
| DOIs | |
| Publication status | Published - 2018 |
Cite this
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Quantum enhanced optomechanical magnetometry. / Li, Bei-Bei; Bilek, Jan; Hoff, Ulrich Busk; Madsen, Lars S.; Forstner, Stefan; Prakash, Varun; Schäfermeier, Clemens; Gehring, Tobias; Bowen, Warwick P.; Andersen, Ulrik Lund.
In: Optica, Vol. 5, No. 7, 850, 2018.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Quantum enhanced optomechanical magnetometry
AU - Li, Bei-Bei
AU - Bilek, Jan
AU - Hoff, Ulrich Busk
AU - Madsen, Lars S.
AU - Forstner, Stefan
AU - Prakash, Varun
AU - Schäfermeier, Clemens
AU - Gehring, Tobias
AU - Bowen, Warwick P.
AU - Andersen, Ulrik Lund
PY - 2018
Y1 - 2018
N2 - The resonant enhancement of both mechanical and optical response in microcavity optomechanical devices allows exquisitely sensitive measurements of stimuli, such as acceleration, mass, and magnetic fields. In this work, we show that quantum correlated light can improve the performance of such sensors, increasing both their sensitivity and their bandwidth. Specifically, we develop a silicon-chip-based cavity optomechanical magnetometer that incorporates phase squeezed light to suppress optical shot noise. At frequencies where shot noise is the dominant noise source, this allows a 20% improvement in magnetic field sensitivity. Furthermore, squeezed light broadens the range of frequencies at which thermal noise dominates, which has the effect of increasing the overall sensor bandwidth by 50%. These proof-of-principle results open the door to apply quantum correlated light more broadly in chip-scale sensors and devices.
AB - The resonant enhancement of both mechanical and optical response in microcavity optomechanical devices allows exquisitely sensitive measurements of stimuli, such as acceleration, mass, and magnetic fields. In this work, we show that quantum correlated light can improve the performance of such sensors, increasing both their sensitivity and their bandwidth. Specifically, we develop a silicon-chip-based cavity optomechanical magnetometer that incorporates phase squeezed light to suppress optical shot noise. At frequencies where shot noise is the dominant noise source, this allows a 20% improvement in magnetic field sensitivity. Furthermore, squeezed light broadens the range of frequencies at which thermal noise dominates, which has the effect of increasing the overall sensor bandwidth by 50%. These proof-of-principle results open the door to apply quantum correlated light more broadly in chip-scale sensors and devices.
U2 - 10.1364/OPTICA.5.000850
DO - 10.1364/OPTICA.5.000850
M3 - Journal article
VL - 5
JO - Optica
JF - Optica
SN - 2334-2536
IS - 7
M1 - 850
ER -