Frequency-Modulated Lorentz Force Magnetometer With Enhanced Sensitivity via Mechanical Amplification

Force-rebalanced Lorentz force magnetometer based on a micromachined oscillator

Quantum-enhanced magnetometer with low-frequency squeezing

Travis Horrom,1 Robinjeet Singh,2 Jonathan P. Dowling,2,3 and Eugeniy E. Mikhailov1 1Department of Physics, The College of William and Mary, Williamsburg, Virginia 23187, USA 2Hearne Institute of Theoretical Physics and Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA 3Beijing Computational Science Research Center, Beijing, 100084, China (Receiv...

Enhanced nonlinear interactions in quantum optomechanics via mechanical amplification

The quantum nonlinear regime of optomechanics is reached when nonlinear effects of the radiation pressure interaction are observed at the single-photon level. This requires couplings larger than the mechanical frequency and cavity-damping rate, and is difficult to achieve experimentally. Here we show how to exponentially enhance the single-photon optomechanical coupling strength using only addi...

Bimodal frequency-modulated atomic force microscopy with small cantilevers.

Small cantilevers with ultra-high resonant frequencies (1-3 MHz) have paved the way for high-speed atomic force microscopy. However, their potential for multi-frequency atomic force microscopy is unexplored. Because small cantilevers have small spring constants but large resonant frequencies, they are well-suited for the characterisation of delicate specimens with high imaging rates. We demonst...

High-sensitivity diamond magnetometer with nanoscale resolution

Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA Department of Physics, Bates College, Lewiston, Maine 04240, USA Department of Physics, University of California, Berkeley, California 9472...