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Experimental analysis of noise strength and environmental correlation time of ensembles of nitrogen vacancy centers in diamond
https://repo.qst.go.jp/records/78280
https://repo.qst.go.jp/records/782803f797b0a-8491-441c-8620-217b0c272ee6
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-12-28 | |||||
| タイトル | ||||||
| タイトル | Experimental analysis of noise strength and environmental correlation time of ensembles of nitrogen vacancy centers in diamond | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Hayashi, K.
× Hayashi, K.× Matsuzaki, Y.× Ashida, T.× Onoda, Shinobu× Abe, Hiroshi× Ohshima, Takeshi× Hatano, M.× Taniguchi, T.× Mizuochi, N.× Onoda, Shinobu× Abe, Hiroshi× Ohshima, Takeshi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | NV centers in diamond has been considered as an important building block for the realization of quantum information processing such as quantum simulation, and quantum metrology. Importantly, NV centers suffer from decoherence, which is an obstacle for more practical applications. There are many ways to suppress decoherence, such as the quantum Zeno effect, dynamical decoupling. However, the efficiency of these protocols strongly depends on the noise properties. So it is essential to understand how the nitrogen concentration affects decoherence, which will let us determine a strategy to improve the coherence time. Here, we report experimental and theoretical investigation of Hahn echo decay curves for NV centers in several diamond samples with different spin concentrations (the sum of NV and P1 concentration). Our experimental results show that an exponential decay curve is observed for a high nitrogen concentration and a non-exponential decay curve is observed for a low nitrogen concentration. Our analysis also shows that the correlation time and amplitude of the dipole interaction from the environmental spin bath have a linear dependence on the spin concentration. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The 2nd International Forum on Quantum Metrology and Sensing (IFQMS) | |||||
| 発表年月日 | ||||||
| 日付 | 2019-12-17 | |||||
| 日付タイプ | Issued | |||||
