Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

The Japan Society of Applied Physics

Quantum manipulation of spins in diamond via magnetic field gradients

Keigo Arai, Jung‐Hyun Lee, Huiliang Zhang, Ronald Lee Walsworth

Published Feb 8, 2016• 0 citations
OpenAlex

Related papers

Quantum control and engineering of single spins in diamond

D.M. Toyli

•Jan 1, 2013•0 citations

Measurement of Microdisplacement by Spin Manipulated Magnetometer of Nitrogen Vacancy Centers With Magnetic Flux Concentration Structure

Xin Liu, Zhonghao Li, Hao Zhang +6 more

The diamond nitrogen-vacancy (NV) centers have stable spin-coherent properties at room temperature. They are easily initialized and read out, highly manipulable, and hold great promise for quantum precision measurements. In this article, we construct a magnetic flux concentration (MFC) structure combined with a quantum spin manipulated magnetometer of NV centers. This structure is further combined with a uniform spatial magnetic field gradient to achieve high-resolution microdisplacement (MD). MD measurement with and without MFC is realized using Ramsey’s principle. The sensitivity of MD measurement with MFC is 150.84 mV/mm, and the experimental test range is 105–107 mm. The resolution of MD detection has been experimentally verified to be 1.95$\mu \text{m}$without MFC and 49 nm with MFC. The resolution of MD detection has been improved by a factor of 39.8. The displacement shot-noise-limited sensitivity of the magnetometer can reach 0.21 nm/Hz$^{\text {1/2}}$. The results demonstrate that utilizing quantum spin manipulation and the MFC effect enables achieving both high resolution and rapid detection of MD for NV centers in systematic diamonds. This offers a novel approach for high-resolution MD measurement.

IEEE Transactions on Electron Devices•Feb 7, 2024•4 citations

Optical manipulation of single spins in diamond

Charles Santori, Philippe Tamarat, Philipp Neumann +9 more

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Jan 1, 2007•0 citations

Selective addressing of solid-state spins at the nanoscale via magnetic resonance frequency encoding

H. Zhang, Keigo Arai, Chinmay Belthangady +2 more

Abstract The nitrogen vacancy centre in diamond is a leading platform for nanoscale sensing and imaging, as well as quantum information processing in the solid state. To date, individual control of two nitrogen vacancy electronic spins at the nanoscale has been demonstrated. However, a key challenge is to scale up such control to arrays of nitrogen vacancy spins. Here, we apply nanoscale magnetic resonance frequency encoding to realize site-selective addressing and coherent control of a four-site array of nitrogen vacancy spins. Sites in the array are separated by 100 nm, with each site containing multiple nitrogen vacancies separated by ~15 nm. Microcoils fabricated on the diamond chip provide electrically tuneable magnetic field gradients ~0.1 G/nm. Tailored application of gradient fields and resonant microwaves allow site-selective nitrogen vacancy spin manipulation and sensing applications, including Rabi oscillations, imaging, and nuclear magnetic resonance spectroscopy with nanoscale resolution. Microcoil-based magnetic resonance of solid-state spins provides a practical platform for quantum-assisted sensing, quantum information processing, and the study of nanoscale spin networks.

arXiv:1610.06630•npj Quantum Information•Aug 9, 2017•38 citations

Optical geometric manipulation of an electron spin in diamond

Yuhei Sekiguchi

The International Commission for Optics•May 16, 2017•0 citations

Fast magnetic field manipulations and nonadiabatic geometric phases of nitrogen-vacancy center spin in diamond

Wen-Qi Fang, Bang‐Gui Liu

Abstract Fast quantum spin manipulation is needed to design spin-based quantum logic gates and other quantum applications. Here, we construct the exact evolution operator of the nitrogen-vacancy-center (NV) spin in diamond under external magnetic fields, and investigate the nonadiabatic geometric phases—both cyclic and non-cyclic—in these fast-manipulated NV spin systems. It is believed that the nonadiabatic geometric phases can be measured in future experiments, and that these fast quantum manipulations can be useful in designing spin-based quantum applications.

arXiv:1704.01824•Journal of Physics D Applied Physics•Jul 11, 2017•0 citations
The diamond nitrogen-vacancy (NV) centers have stable spin-coherent properties at room temperature. They are easily initialized and read out, highly manipulable, and hold great promise for quantum precision measurements. In this article, we construct a magnetic flux concentration (MFC) structure combined with a quantum spin manipulated magnetometer of NV centers. This structure is further combined with a uniform spatial magnetic field gradient to achieve high-resolution microdisplacement (MD). MD measurement with and without MFC is realized using Ramsey’s principle. The sensitivity of MD measurement with MFC is 150.84 mV/mm, and the experimental test range is 105–107 mm. The resolution of MD detection has been experimentally verified to be 1.95μm\mu \text{m}μmwithout MFC and 49 nm with MFC. The resolution of MD detection has been improved by a factor of 39.8. The displacement shot-noise-limited sensitivity of the magnetometer can reach 0.21 nm/Hz1/2^{\text {1/2}}1/2. The results demonstrate that utilizing quantum spin manipulation and the MFC effect enables achieving both high resolution and rapid detection of MD for NV centers in systematic diamonds. This offers a novel approach for high-resolution MD measurement.
Abstract The nitrogen vacancy centre in diamond is a leading platform for nanoscale sensing and imaging, as well as quantum information processing in the solid state. To date, individual control of two nitrogen vacancy electronic spins at the nanoscale has been demonstrated. However, a key challenge is to scale up such control to arrays of nitrogen vacancy spins. Here, we apply nanoscale magnetic resonance frequency encoding to realize site-selective addressing and coherent control of a four-site array of nitrogen vacancy spins. Sites in the array are separated by 100 nm, with each site containing multiple nitrogen vacancies separated by ~15 nm. Microcoils fabricated on the diamond chip provide electrically tuneable magnetic field gradients ~0.1 G/nm. Tailored application of gradient fields and resonant microwaves allow site-selective nitrogen vacancy spin manipulation and sensing applications, including Rabi oscillations, imaging, and nuclear magnetic resonance spectroscopy with nanoscale resolution. Microcoil-based magnetic resonance of solid-state spins provides a practical platform for quantum-assisted sensing, quantum information processing, and the study of nanoscale spin networks.
Abstract Fast quantum spin manipulation is needed to design spin-based quantum logic gates and other quantum applications. Here, we construct the exact evolution operator of the nitrogen-vacancy-center (NV) spin in diamond under external magnetic fields, and investigate the nonadiabatic geometric phases—both cyclic and non-cyclic—in these fast-manipulated NV spin systems. It is believed that the nonadiabatic geometric phases can be measured in future experiments, and that these fast quantum manipulations can be useful in designing spin-based quantum applications.