What’s New

After a brief introduction to quantum nonlocality, we propose a set of conditions on the joint probabilities as a test of genuine multipartite nonlocality, and it turns out that all entangled symmetric multipartite qubit states pass this test. In the following we generalize this test to a family of Hardy-type tests, which can detect different degrees of nonlocality ranging from standard to genuine multipartite nonlocality. At last, we explore network nonlocality sharing in an n-branch generalized star network scenario with m observers in each branch and k settings per observer.

We are pleased to announce that Professor Yuxin Zhao, fellow at the HK Institute of Quantum Science & Technology, has recently been awarded the prestigious title of HKU-100 Scholar by the University. In his outstanding research, Professor Zhao has mainly focused on novel topological quantum matter. Several theories of topological physics established by him and co-workers, including those on topological metals, were pioneering and well-recognized internationally. Please join us in congratulating Professor Zhao on this remarkable achievement, which not only honours his contributions to the field but also significantly advances the capabilities of our institute in the realm of quantum science and technology.

We are thrilled to announce that Professor Xiang Chao, fellow at the HK Institute of Quantum Science & Technology, has been honored with the Croucher Innovation Award 2025. Professor Zhao is one of four exceptional scholars to receive this prestigious accolade this year. In his groundbreaking research, Professor Xiang focuses on miniaturizing optical systems to the chip scale, leveraging the myriad benefits of light across various applications. A central element of his work involves the development of integrated on-chip laser sources. By pioneering advancements in semiconductor lasers integrated onto photonic chips, Professor Xiang aims to significantly enhance their performance and functionality. Utilizing advanced semiconductor micro- and nanofabrication technologies, his research optimizes on-chip laser performance. This enables seamless integration with photonic integrated circuits, leading to improved energy efficiency and broader application potential. Through the technique of heterogeneous integration, Professor Xiang extends the utility of semiconductor lasers beyond traditional optical communications to include fields such as sensing, metrology, imaging, and quantum information processing and computing. His focus on developing high-performance, low-noise lasers that are scalable and suitable for a wide array of technological applications is set to make a substantial impact on both fundamental scientific research and practical technologies. Professor Xiang’s innovative design and fabrication methods promise to facilitate the creation of more sophisticated and energy-efficient photonic devices. Please join us in congratulating Professor Xiang Chao on this remarkable achievement, which not only honours his contributions to the field but also significantly advances the capabilities of our institute in the realm of quantum science and technology. For more information, please refer to https://croucher.org.hk/en/news/four-emerging-research-leaders-earn-croucher-innovation-awards Credit/Source: https://croucher.org.hk/en/news