講演情報
[10p-N101-13]Energy Optimization of L-Arginine Molecular Ion Implantation for NV–¹³C Hybrid Qubits in Diamond
〇(P)BISWAJIT BISWAS1, Priyadharshini Balasubramanian2, Kouta Takenaka1, Fedor Jelezko2, Takeshi Ohshima1, Shinobu Onoda1 (1.National Institutes for Quantum Science and Technology (QST), 2.University of Ulm)
キーワード：
Quantum Senseing
The nitrogen-vacancy (NV) centers in diamond, also known as quantum bit operating at room temperature, have been recognized as a leading platform for quantum information and sensing. The electron spin of the NV center, along with the nuclear spins of the incorporated nitrogen atom and the neighboring isotope of carbon-13, act as a hybrid quantum register. By utilizing such quantum resister, quantum error correction, magnetic sensing and quantum teleportation have been demonstrated. Previously, we have developed ion beams of 65 keV adenine (C5N4Hn) containing four nitrogen atoms, 284 keV phthalocyanine (C32N8H18) containing eight nitrogen atoms, and 90 or 100 keV L-arginine (13C6H14 15N4O2) with isotopically enriched 13C and 15N. The implanted molecular ions are designed to dissociate into individual atoms at the surface, then progress through the diamond forming vacancies, halting with a spatial spread (~9±4 nm) for all molecular ions. The implanted nitrogen atoms combined with the vacancies via thermal treatment, forming the NV centers. In this study, we optimized the implantation energy of L-arginine ions to make a strong hyperfine coupling where the distance between NV and 13C is closer. A comparative analysis of the molecular ion energy for creating 15N-13C has been conducted where the resulting hybrid multi-qubits are characterized by pulsed optically detected magnetic resonance (ODMR), Ramsey spectroscopy, XY8 spectroscopy, etc. In the presentation we will explain the NV created by L-arginine implantation.