A5006111713- Diamond and Carbon-based Materials Research
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Advanced Frequency and Time Standards
- Advanced Fiber Laser Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Memory and Neural Computing
- Spectroscopy and Quantum Chemical Studies
- Quantum optics and atomic interactions
- Graphene research and applications
- Mechanical and Optical Resonators
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Hemodynamic Monitoring and Therapy
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Laser-Matter Interactions and Applications
- Advanced Materials Characterization Techniques
- Geomagnetism and Paleomagnetism Studies
- Electrochemical Analysis and Applications
National Institute of Standards and Technology
2021-2022
Massachusetts Institute of Technology
2015-2018
MIT Lincoln Laboratory
2016-2018
Ultrashort pulses of extreme ultraviolet light from high-harmonic generation are a new tool for probing coupled charge, spin, and phonon dynamics with element specificity, attosecond pump-probe synchronization, time resolution few femtoseconds in tabletop apparatus. In this paper, we address an important question magneto-optics that has implications understanding magnetism on the fastest scales: Is signal transverse magneto-optical Kerr effect at M2,3 edges magnetic material purely or is it...
We demonstrate a robust, scale-factor-free vector magnetometer, which uses closed-loop frequency-locking scheme to simultaneously track Zeeman-split resonance pairs of nitrogen-vacancy (NV) centers in diamond. This technique offers three-orders-of-magnitude increase dynamic range compared open-loop methodologies; is robust against fluctuations temperature, linewidth, and contrast; allows for simultaneous interrogation multiple transition frequencies. By directly detecting the frequencies NV...
We report on detailed studies of electronic and nuclear spin states in the diamond-nitrogen-vacancy (NV) center under weak transverse magnetic fields. numerically predict experimentally verify a previously unobserved NV hyperfine level anticrossing (LAC) occurring at bias fields tens gauss---two orders magnitude lower than reported LACs $\ensuremath{\sim}500$ $\ensuremath{\sim}1000$ G axial then discuss how ground-state Hamiltonian can be manipulated this regime to tailor NV's sensitivity...
We implement a DC voltage reference by measuring Stark shifts of cesium Rydberg atoms in vapor cell. Cesium are excited from the ground state to 15s via degenerate two-photon transition that provides narrow, Doppler free line. The experiences scalar, quadratic stark shift which is used measure across parallel plate capacitor integrated into demonstrate sensitivity
We investigate the Stark shift in Rydberg rubidium atoms through electromagnetically induced transparency for measurement of direct current (dc) and 60~Hz alternating (ac) voltages. This technique has applications to atom-based measurements dc ac voltage calibration instrumentation. present experimental results different atomic states that allow ranging from 0~V 12~V. A standard could become an alternative method with more favorable size, weight, power consumption, cost compared precise...
Received 6 December 2016DOI:https://doi.org/10.1103/PhysRevA.94.069902©2016 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasFine & hyperfine structurePhysical SystemsNitrogen vacancy centers in diamondAtomic, Molecular Optical