Experimental Investigation of Quantum Correlations in a Two-Qutrit Spin System

Yue Fu; Wenquan Liu; Xiangyu Ye; Ya Wang; Chengjie Zhang; Chang-Kui Duan; Xing Rong; Jiangfeng Du

doi:10.1103/PhysRevLett.129.100501

Experimental Investigation of Quantum Correlations in a Two-Qutrit Spin System

Phys Rev Lett. 2022 Sep 2;129(10):100501. doi: 10.1103/PhysRevLett.129.100501.

Authors

Yue Fu^{1

2}, Wenquan Liu^{1

2}, Xiangyu Ye¹, Ya Wang^{1

2

3}, Chengjie Zhang^{4

5}, Chang-Kui Duan^{1

2}, Xing Rong^{1

2

3}, Jiangfeng Du^{1

2

3}

Affiliations

¹ CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.
² CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China.
³ Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China.
⁴ School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.
⁵ State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China.

PMID: 36112462
DOI: 10.1103/PhysRevLett.129.100501

Abstract

We report an experimental investigation of quantum correlations in a two-qutrit spin system in a single nitrogen-vacancy center in diamond at room temperatures. Quantum entanglement between two qutrits was observed at room temperature, and the existence of nonclassical correlations beyond entanglement in the qutrit case has been revealed. Our work demonstrates the potential of the NV centers as the multiqutrit system to execute quantum information tasks and provides a powerful experimental platform for studying the fundamental physics of high-dimensional quantum systems in the future.