English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nitrogen-vacancy (NV) spin ensembles in diamond provide an advanced magneticsensing platform, with applications in both the physical and life sciences. Thedevelopment of isotopically engineered $^{15}$NV diamond offers advantages overnaturally occurring $^{14}$NV for magnetometry, due to its simpler hyperfinestructure. However, for sensing modalities requiring a bias magnetic field notaligned with the sensing NV axis, the absence of a quadrupole moment in the$^{15}$N nuclear spin leads to pronounced envelope modulation effects intime-dependent measurements of $^{15}$NV spin evolution. While such behavior inspin echo experiments are well studied, analogous effects in Ramseymeasurements and the implications for magnetometry remain under-explored. Here,we derive the modulated $^{15}$NV Ramsey response to a misaligned bias field,using a simple vector description of the effective magnetic field on thenuclear spin. The predicted modulation properties are then compared toexperimental results, revealing significant magnetic sensitivity loss ifunaddressed. We demonstrate that double-quantum coherences of the NV $S=1$electronic spin states dramatically suppress these envelope modulations, whileadditionally proving resilient to other parasitic effects such as strainheterogeneity and temperature shifts.

Ramsey Envelope Modulation in NV Diamond Magnetometry