Abstract
We proposed an annular microstrip-line resonator (AMLR) to provide a broadband, circularly polarized and uniform microwave field for state manipulation of negatively charged nitrogen-vacancy (NV–) center ensembles in order to achieve wide magnetic field detection range and large area microwave synchronous manipulation in miniaturized magnetic sensing devices. The bandwidth of the designed AMLR was 410 MHz when the input return losses was -10dB. With the designed bandwidth, a magnetic field detection range of 292 G was achieved based on the NV– center ensembles. The relationship between the direction of the magnetic field and the phase of the source signal indicated that the generated microwave field of AMLR was circularly polarized. Furthermore, the magnetic field magnitude homogeneity is higher than the parallel-microstrip-lines resonator (PMLR) and the intersected-microstrip-lines resonator (IMLR), and the magnetic field magnitude of AMLR had a difference of 0.012 G in the center of a 1×1 mm2 area. The AMLR has a great potential in magnetic field detection, temperature and pressure detection, which is useful for quantum applications with NV– center ensembles in diamond.
Highlights
The negatively charged nitrogen-vacancy (NV–) center in diamond consisting of a substitutional nitrogen atom together with an adjacent vacancy1 are widely used in quantum information2,3 and sensing.4,5 The NV– center ensemble is promising for magnetic measuring and temperature measuring devices6,7 according to its extraordinary properties, such as long spin coherence time,8 visible initialization and read-out9 and microwave (MW) manipulation.10,11 State manipulation12 of the NV– center ensembles through the MW field13,14 provides strong technical support for measurement of the magnetic field.14,15 the manipulation of the spin state relies on an applied bias magnetic field provided by Helmholtz coils in general, which is difficult to reduce the device volume
We proposed an annular microstrip-line resonator (AMLR) to provide a broadband, circularly polarized and uniform microwave field for state manipulation of negatively charged nitrogen-vacancy (NV–) center ensembles in order to achieve wide magnetic field detection range and large area microwave synchronous manipulation in miniaturized magnetic sensing devices
The magnetic field magnitude homogeneity is higher than the parallel-microstrip-lines resonator (PMLR) and the intersected-microstrip-lines resonator (IMLR), and the magnetic field magnitude of AMLR had a difference of 0.012 G in the center of a 1×1 mm2 area
Summary
The negatively charged nitrogen-vacancy (NV–) center in diamond consisting of a substitutional nitrogen atom together with an adjacent vacancy are widely used in quantum information and sensing. The NV– center ensemble is promising for magnetic measuring and temperature measuring devices according to its extraordinary properties, such as long spin coherence time, visible initialization and read-out and microwave (MW) manipulation. State manipulation of the NV– center ensembles through the MW field provides strong technical support for measurement of the magnetic field. the manipulation of the spin state relies on an applied bias magnetic field provided by Helmholtz coils in general, which is difficult to reduce the device volume. The manipulation of the spin state relies on an applied bias magnetic field provided by Helmholtz coils in general, which is difficult to reduce the device volume. The resonator with an ultra-broadband (15.8 GHz) coplanar waveguide for optically detected magnetic resonance (ODMR) ensured that electron spins could be manipulated under external magnetic field up to 5000 G.19. Both the loop-gap resonator used by D. We designed a four-port annular microstrip-lines resonator (AMLR) that can provide MW field with broadband, circular polarization and uniform characteristics simultaneously. Broadband circularly polarized resonator for NV– center ensemble in diamond has important significance to miniaturization of devices, and has huge potential in medical assay, chemical testing, and especially magnetic detection
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
