Optimized Planar Microwave Antenna for Nitrogen Vacancy Center Based Sensing Applications
Oliver Opaluch, Nimba Oshnik, Richard Nelz, Elke Neu
Abstract
Individual nitrogen vacancy (NV) color centers in diamond are versatile, spin-based quantum sensors. Coherently controlling the spin of NV centers using microwaves in a typical frequency range between 2.5 and 3.5 GHz is necessary for sensing applications. In this work, we present a stripline-based, planar, Ω-shaped microwave antenna that enables one to reliably manipulate NV spins. We found an optimal antenna design using finite integral simulations. We fabricated our antennas on low-cost, transparent glass substrate. We created highly uniform microwave fields in areas of roughly 400 × 400 μm2 while realizing high Rabi frequencies of up to 10 MHz in an ensemble of NV centers.
Topics & Concepts
MicrowaveDiamondPlanarSpinsMaterials scienceAntenna (radio)OptoelectronicsStriplineSpin (aerodynamics)Vacancy defectPhysicsTelecommunicationsComputer scienceNuclear magnetic resonanceCondensed matter physicsComputer graphics (images)Composite materialQuantum mechanicsThermodynamicsDiamond and Carbon-based Materials ResearchAdvanced Fiber Laser TechnologiesQuantum optics and atomic interactions