Experimental quantum state compression from two identical qubits to a qutrit  

作　　者：Qiao Xu Lin-Xiang Zhou Tian-Feng Feng Shang-Feng Qiu Si-Wu Li Wu-Ji Zhang Hui Luo Xiao-Qi Zhou 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics,Sun Yat-sen University,Guangzhou 510000,China [2]Hefei National Laboratory,Hefei 230088,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第7期1-5,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.61974168);the Key Research and Development Program of Guangdong Province of China(Grant Nos.2018B030329001,and 2018B030325001);the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0300702);support from the National Young 1000 Talents Plan and Hefei National Laboratory。

摘　　要：In the realm of modern information technology,data compression technology occupies a pivotal position.With advancements in quantum information technology,the need to compress large-scale qubits ensembles has become urgent,aiming to reduce the demand on quantum storage resources.However,existing quantum state compression schemes generally face a limitation:the particles before and after compression must reside in the same dimensional space.In specific scenarios,compressing qubits into particles of higher dimensions not only enhances the efficiency of quantum state compression but also further reduces the usage of quantum storage resources.Here we experimentally demonstrated a quantum state compression between particles of different dimensions,successfully compressing two qubits into a single qutrit.The average fidelity of the resulting qutrit with the ideal quantum state is 0.8835.Our study may have potential applications in future quantum information,such as increasing quantum communication bandwidth and reducing storage resource consumption in quantum computing.

关 键 词：quantum state compression quantum information technology OPTICS 

分 类 号：O413[理学—理论物理]