TY - JOUR
T1 - Highly aligned 2D NV ensemble fabrication from nitrogen-terminated (111) surface
AU - Tatsuishi, Tetsuya
AU - Kanehisa, Kyotaro
AU - Kageura, Taisuke
AU - Sonoda, Takahiro
AU - Hata, Yuki
AU - Kawakatsu, Kazuto
AU - Tanii, Takashi
AU - Onoda, Shinobu
AU - Stacey, Alastair
AU - Kono, Shozo
AU - Kawarada, Hiroshi
N1 - Funding Information:
This work was supported by MEXT, the Quantum Leap Flagship Program ( JPMXS0118067395 ). Alastair Stacey is supported by an ARC fellowship ( DE190100336 ).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/8/15
Y1 - 2021/8/15
N2 - The nitrogen vacancy (NV) center in diamond is fascinating and has a long spin coherence time. It is applied to magnetic sensors with high sensitivity (∼fT). To achieve a high sensitivity, an aligned NV ensemble is required. This paper presents a new methodology for the fabrication of two-dimensional (2D) aligned NV ensembles by using nitrogen-terminated (111) surface. To realize this, pure diamond growth and high nitrogen coverage on (111) surface were performed. As a result, we have succeeded in producing 2D NV ensembles, with 1 × 109 cm−2. Coherence time T2 was 2.45 μs. Also, Using dynamical decoupling, the decoherence sources were revealed. The alignment ratio along [111] axis was archived 60%. Thermal annealing of the nitrogen termination was introduced to improve the alignment ratio. After that, the alignment rate was up to 73%. This report shows that the aligned 2D NV ensemble has possibility to be applied for multiple quantum devices.
AB - The nitrogen vacancy (NV) center in diamond is fascinating and has a long spin coherence time. It is applied to magnetic sensors with high sensitivity (∼fT). To achieve a high sensitivity, an aligned NV ensemble is required. This paper presents a new methodology for the fabrication of two-dimensional (2D) aligned NV ensembles by using nitrogen-terminated (111) surface. To realize this, pure diamond growth and high nitrogen coverage on (111) surface were performed. As a result, we have succeeded in producing 2D NV ensembles, with 1 × 109 cm−2. Coherence time T2 was 2.45 μs. Also, Using dynamical decoupling, the decoherence sources were revealed. The alignment ratio along [111] axis was archived 60%. Thermal annealing of the nitrogen termination was introduced to improve the alignment ratio. After that, the alignment rate was up to 73%. This report shows that the aligned 2D NV ensemble has possibility to be applied for multiple quantum devices.
KW - (111) diamond surface
KW - Diamond
KW - Diamond growth
KW - NV center
KW - Nitrogen termination
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U2 - 10.1016/j.carbon.2021.04.057
DO - 10.1016/j.carbon.2021.04.057
M3 - Article
AN - SCOPUS:85105724218
SN - 0008-6223
VL - 180
SP - 127
EP - 134
JO - Carbon
JF - Carbon
ER -