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 · Physical Review Letters · 2022
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.