Related papers: Room-Temperature Hybrid 2D-3D Quantum Spin System for Enhanced Magnetic Sensing and Many-Body Dynamics

Room-Temperature Hybrid 2D-3D Quantum Spin System for Enhanced Magnetic Sensing and Many-Body Dynamics

URL: http://arxiv.org/abs/2504.10815v1
Date: Tue, 15 Apr 2025 02:30:07 GMT
Title: Room-Temperature Hybrid 2D-3D Quantum Spin System for Enhanced Magnetic Sensing and Many-Body Dynamics
Authors: Haoyu Sun, Pei Yu, Xu Zhou, Xiangyu Ye, Mengqi Wang, Zhaoxin Liu, Yuhang Guo, Wenzhao Liu, You Huang, Pengfei Wang, Fazhan Shi, Kangwei Xia, Ya Wang,
Abstract summary: Two-dimensional (2D) materials with optically accessible spin defects have emerged as a promising platform for building integrated quantum spin systems.<n>We present a hybrid spin system operating under ambient conditions, integrating boron vacancy (VB) spins in 2D hexagonal boron nitride flakes with a single nitrogen vacancy (NV) center in 3D single-crystal diamonds.<n>This combined system achieves full controllability and exhibits enhanced performance for nanoscale magnetic sensing, including an improved dynamic range.
Score: 13.426766936840947
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Advances in hybrid quantum systems and their precise control are pivotal for developing advanced quantum technologies. Two-dimensional (2D) materials with optically accessible spin defects have emerged as a promising platform for building integrated quantum spin systems due to their exceptional flexibility and scalability. However, experimentally realizing such systems and demonstrating their superiority remains challenging. Here, we present a hybrid spin system operating under ambient conditions, integrating boron vacancy (VB) spins in 2D hexagonal boron nitride flakes with a single nitrogen vacancy (NV) center in 3D single-crystal diamonds. This combined system achieves full controllability and exhibits enhanced performance for nanoscale magnetic sensing, including an improved dynamic range. Moreover, we investigate the rich many-body spin dynamics within the hybrid system, enabling the first-time quantification of the fluorescence intensity of a single VB defect at 104 counts per second. This result represents a critical step toward the direct optical observation of single VB defects.

Related papers

Spin squeezing in an ensemble of nitrogen-vacancy centers in diamond [6.338826024477338]
We present the first experimental demonstration of spin squeezing in a solid-state spin system.<n>Our results open the door to entanglement-enhanced metrology using macroscopic ensembles of optically active spins in solids.
arXiv Detail & Related papers (2025-03-18T18:00:01Z)
Microwave-based quantum control and coherence protection of tin-vacancy spin qubits in a strain-tuned diamond membrane heterostructure [54.501132156894435]
Tin-vacancy center (SnV) in diamond is a promising spin-photon interface with desirable optical and spin properties at 1.7 K. We introduce a new platform that overcomes these challenges - SnV centers in uniformly strained thin diamond membranes. The presence of crystal strain suppresses temperature dependent dephasing processes, leading to a considerable improvement of the coherence time up to 223 $mu$s at 4 K.
arXiv Detail & Related papers (2023-07-21T21:40:21Z)
Control of an environmental spin defect beyond the coherence limit of a central spin [79.16635054977068]
We present a scalable approach to increase the size of electronic-spin registers. We experimentally realize this approach to demonstrate the detection and coherent control of an unknown electronic spin outside the coherence limit of a central NV. Our work paves the way for engineering larger quantum spin registers with the potential to advance nanoscale sensing, enable correlated noise spectroscopy for error correction, and facilitate the realization of spin-chain quantum wires for quantum communication.
arXiv Detail & Related papers (2023-06-29T17:55:16Z)
All-Optical Nuclear Quantum Sensing using Nitrogen-Vacancy Centers in Diamond [52.77024349608834]
Microwave or radio-frequency driving poses a significant limitation for miniaturization, energy-efficiency and non-invasiveness of quantum sensors. We overcome this limitation by demonstrating a purely optical approach to coherent quantum sensing. Our results pave the way for highly compact quantum sensors to be employed for magnetometry or gyroscopy applications.
arXiv Detail & Related papers (2022-12-14T08:34:11Z)
Room-temperature coherent optical manipulation of single-hole spins in solution-grown perovskite quantum dots [3.5994174958472316]
Current systems either operate at very low temperatures or are difficult to scale-up. Here we report manipulation and readout of single-hole spins in an ensemble of solution-grown CsPbBr3 QDs. These operations accomplish nearly complete quantum-state control of single-hole spins at room temperature.
arXiv Detail & Related papers (2022-08-24T15:32:24Z)
Electromagnetically induced transparency in inhomogeneously broadened divacancy defect ensembles in SiC [52.74159341260462]
Electromagnetically induced transparency (EIT) is a phenomenon that can provide strong and robust interfacing between optical signals and quantum coherence of electronic spins. We show that EIT can be established with high visibility also in this material platform upon careful design of the measurement geometry. Our work provides an understanding of EIT in multi-level systems with significant inhomogeneities, and our considerations are valid for a wide array of defects in semiconductors.
arXiv Detail & Related papers (2022-03-18T11:22:09Z)
A low-loss ferrite circulator as a tunable chiral quantum system [108.66477491099887]
We demonstrate a low-loss waveguide circulator constructed with single-crystalline yttrium iron garnet (YIG) in a 3D cavity. We show the coherent coupling of its chiral internal modes with integrated superconducting niobium cavities. We also probe experimentally the effective non-Hermitian dynamics of this system and its effective non-reciprocal eigenmodes.
arXiv Detail & Related papers (2021-06-21T17:34:02Z)
Deterministic single-atom source of quasi-superradiant $N$-photon pulses [62.997667081978825]
Scheme operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting. This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.
arXiv Detail & Related papers (2020-12-01T03:55:27Z)
Intersystem Crossing and Exciton-Defect Coupling of Spin Defects in Hexagonal Boron Nitride [1.3124513975412255]
We establish a theoretical framework to accurately and systematically design quantum defects in wide-bandgap 2D systems. We identify promising single photon emitters such as SiVV and spin qubits such as TiVV and MoVV in hexagonal boron nitride.
arXiv Detail & Related papers (2020-09-06T23:42:04Z)
Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN [52.915502553459724]
In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
arXiv Detail & Related papers (2020-06-23T14:20:46Z)

This list is automatically generated from the titles and abstracts of the papers in this site.