9–13 Sept 2024
ETH Zürich
Europe/Zurich timezone

【626】High-resolution spectroscopy of a single nitrogen-vacancy defect at zero magnetic field

12 Sept 2024, 15:15
15m
ETZ E 8

ETZ E 8

Talk Spintronics and Magnetism at the Nanoscale Spintronics and Magnetism at the Nanoscale

Speaker

Shashank Kumar (IISER Bhopal)

Description

In this work, we have studied the effect of intrinsic electric and strain fields, collectively known as the effective field, on the energy level structure of the nitrogen-vacancy (NV) center in diamond. we used pulsed electron spin resonance spectroscopy to resolve the hyperfine structure at zero magnetic field and its vicinity in a polycrystalline diamond. Results revealed characteristic splitting and transition imbalance due to level anti-crossing in the presence of a transverse effective field. This work is a crucial step for advancing spin-based quantum sensors. We also introduce a theoretical model of the magnetic dipole transitions that provides an improved understanding of the polarization response of the hyperfine spin transitions.

Primary author

Shashank Kumar (IISER Bhopal)

Co-authors

Ms Jayita Saha (IISER Bhopal) Mr Jemish Naliyapara (IISER Bhopal) Dr Phani Kumar Peddibhotla (IISER Bhopal) Mr Pralekh Dubey (IISER Bhopal) Mr Sudhan Bhadade (IISER Bhopal)

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