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Extending the spin-dephasing time (T2*) of perfectly aligned nitrogen-vacancy (NV) centers in large-volume chemical vapor deposition (CVD) diamonds leads to enhanced DC magnetic sensitivity. However, T2* of the NV centers is significantly…

Applied Physics · Physics 2023-07-11 T. Tsuji , T. Sekiguchi , T. Iwasaki , M. Hatano

The usefulness of solid-state spins in quantum technologies depends on how long they can remain in a coherent superposition of quantum states. This Colloquium discusses how first-principles simulations can predict spin dynamics for…

Quantum Physics · Physics 2025-03-21 Mykyta Onizhuk , Giulia Galli

The nitrogen-vacancy (NV) centre, as a promising candidate solid state system of quantum information processing, its electron spin coherence is influenced by the magnetic field fluctuations due to the local environment. In pure diamonds,…

Mesoscale and Nanoscale Physics · Physics 2011-04-08 Nan Zhao , Jian-Liang Hu , Sai-Wah Ho , Tsz-Kai Wen , R. B. Liu

The nitrogen-vacancy (NV) center spin represents an appealing candidate for quantum information processing. Besides the widely used microwave control, its coherent manipulation may also be achieved using laser as mediated by the excited…

Quantum Physics · Physics 2022-05-05 Jiazhao Tian , Tianyi Du , Yu Liu , Haibin Liu , Fangzhou Jin , Ressa S. Said , Jianming Cai

Robust spin-photon interfaces in solids are essential components in quantum networking and sensing technologies. Ideally, these interfaces combine a long-lived spin memory, coherent optical transitions, fast and high-fidelity spin…

We report on sensing stability of nanodiamond (ND) quantum sensors in various pH aqueous buffer solutions for the two detection schemes of quantum decoherence spectroscopy and thermometry. The electron spin properties of single…

Mesoscale and Nanoscale Physics · Physics 2019-10-17 Masazumi Fujiwara , Ryuta Tsukahara , Yoshihiko Sera , Hiroshi Yukawa , Yoshinobu Baba , Shinichi Shikata , Hideki Hashimoto

Progress with quantum technology has for a large part been realized with the nitrogen-vacancy centre in diamond. Part of its properties, however, are nonideal and this drives research into other spin-active crystal defects. Several of these…

Although a nuclear spin is weakly coupled to its environment, due to its small gyromagnetic ratio, its coherence time is limited by the hyperfine coupling to a nearby noisy electron. Here, we propose to utilize continuous dynamical…

Quantum Physics · Physics 2017-03-07 Itsik Cohen , Thomas Unden , Fedor Jelezko , Alex Retzker

Inhomogeneous dephasing from uncontrolled environmental noise can limit the coherence of a quantum sensor or qubit. For solid state spin qubits such as the nitrogen-vacancy (NV) center in diamond, a dominant source of environmental noise is…

Quantum Physics · Physics 2015-12-23 E. R. MacQuarrie , T. A. Gosavi , S. A. Bhave , G. D. Fuchs

We investigate coherent quantum control of a nitrogen vacancy (NV) center in diamond with microwave fields generated from a nanoscale magnet that is proximal to the NV center. Our results show remarkable coherent control with high contrast…

Mesoscale and Nanoscale Physics · Physics 2024-07-22 Md Fahim F Chowdhury , Adi Jung , Lea La Spina , Ausrine Bartasyte , Samuel Margueron , Jayasimha Atulasimha

Frequency references based on solid state spins promise simplicity, compactness, robustness, multifunctionality, ease of integration, and high densities of emitters. Nitrogen-vacancy (NV) centers in diamond are a natural candidate, but the…

The ground state spin of the negatively charged nitrogen-vacancy center in diamond has many exciting applications in quantum metrology and solid state quantum information processing, including magnetometry, electrometry, quantum memory and…

Materials Science · Physics 2012-06-05 M. W. Doherty , F. Dolde , H. Fedder , F. Jelezko , J. Wrachtrup , N. B. Manson , L. C. L. Hollenberg

We demonstrate a novel method for coherent optical manipulation of individual nuclear spins in the solid state, mediated by the electronic states of a proximal quantum emitter. Specifically, using the nitrogen-vacancy (NV) color center in…

Quantum Physics · Physics 2020-04-22 M. L. Goldman , T. L. Patti , D. Levonian , S. F. Yelin , M. D. Lukin

We characterize single nitrogen-vacancy (NV) centers created by 10-keV N+ ion implantation into diamond via thin SiO$_2$ layers working as screening masks. Despite the relatively high acceleration energy compared with standard ones (< 5…

Quantum Physics · Physics 2020-06-26 Shuntaro Ishizu , Kento Sasaki , Daiki Misonou , Tokuyuki Teraji , Kohei M. Itoh , Eisuke Abe

Electronic spins of nitrogen vacancy (NV) centers in diamond constitute a promising system for micro- and nano-scale magnetic sensing, due to their operation under ambient conditions, ease of placement in close proximity to sensing targets,…

Quantum devices for sensing and computing applications require coherent quantum systems which can be manipulated in a fast and robust way. Such quantum control is typically achieved using external electric or magnetic fields which drive the…

Mesoscale and Nanoscale Physics · Physics 2015-12-14 Arne Barfuss , Jean Teissier , Elke Neu , Andreas Nunnenkamp , Patrick Maletinsky

Optically accessible solid state defect spins serve as a primary platform for quantum information processing, where precise control of the electron spin and ancillary nuclear spins is essential for operation. Using the nitrogen-vacancy (NV)…

Quantum Physics · Physics 2026-02-12 Gergő Thiering , Adam Gali

Nuclear spins near group-IV defects in diamond are promising candidates for quantum memories in quantum network applications. Here, we demonstrate high-fidelity control of a single $^{13}$C nuclear spin coupled to a tin-vacancy (SnV) center…

A nitrogen-vacancy (NV) center in a diamond enables the access to an electron spin, which is expected to present highly sensitive quantum sensors. Although exploiting a nitrogen nuclear spin improves the sensitivity, manipulating it using a…

A controlled qubit in a rotating frame opens new opportunities to probe fundamental quantum physics, such as geometric phases in physically rotating frames, and can potentially enhance detection of magnetic fields. Realising a single qubit…