Presentation Information

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-C310-7]Evaluation of Noise Surrounding Shallow NV Center in Diamond by Dynamical Decoupling and Double Quantum Relaxometry

〇Kosuke Kimura¹, Shinobu Onoda¹, shunsuke Daimon¹, Tokuyuki Teraji², Junichi Isoya³, Tomoya Hasunuma^1,4, Ikki Shingai^1,4, Takeshi Ohshima¹ (1.QST, 2.NIMS, 3.Univ. of Tsukuba, 4.Gunma Univ.)

Keywords:

NV center,Decoherence,Noise Spectroscopy

Quantum sensing based on entanglement between Nitrogen-Vacancy (NV) centers in diamond is expected to substantial advantages for nano-scale magnetic fields measurement. However it remains unclear, from the perspective of decoherence, whether entangled states can achieve sensitivity beating standard quantum limit (SQL) under ambient conditions. In this work, we characterized the environmental noise governing decoherence using two techniques, dynamical decoupling and double-quantum relaxometry. Furthermore, we investigated the origins of the two Lorentzian noise components identified in the noise spectrum.

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