Back to News
quantum-computing

Local distinguishability of five orthogonal product states on bipartite and tripartite quantum systems

Guang-Bao Xu, Zi-Yan Hao, Hua-Kun Wang, Yu-Guang Yang, Dong-Huan Jiang
Loading...
4 min read
0 likes
⚡ Quantum Brief
Chinese researchers have solved a long-standing problem in quantum information by determining the local distinguishability of five orthogonal product states (OPSs) in bipartite and tripartite systems, addressing a gap in quantum protocol efficiency. The team introduced a novel "vector of orthogonal relations" framework to classify the structure of bipartite OPSs, dividing them into six distinct categories based on their mathematical properties. Five of the six bipartite categories were proven distinguishable via local operations and classical communication (LOCC), while the sixth requires case-by-case analysis, revealing nuanced limitations in quantum state discrimination. For tripartite systems, the study identified eight structural categories using the same vector method, systematically determining the LOCC distinguishability for each, expanding the scope beyond prior bipartite-focused research. This work advances quantum nonlocality research, offering practical insights for reducing resource costs in quantum communication protocols by optimizing state discrimination techniques.
AI Audio Summary
0:00 / 0:00
Click to play
463705f9-4a81-4f55-a5b6-c84dd4da6634.jpeg
Quantum News · Media Library

Quantum Physics arXiv:2512.00484 (quant-ph) [Submitted on 29 Nov 2025] Title:Local distinguishability of five orthogonal product states on bipartite and tripartite quantum systems Authors:Guang-Bao Xu, Zi-Yan Hao, Hua-Kun Wang, Yu-Guang Yang, Dong-Huan Jiang View a PDF of the paper titled Local distinguishability of five orthogonal product states on bipartite and tripartite quantum systems, by Guang-Bao Xu and 3 other authors View PDF HTML (experimental) Abstract:Local distinguishability of orthogonal quantum states can effectively reduce the consumption of quantum resources and lower economic costs in quantum protocols. Although numerous achievements have been made regarding local distinguishability of orthogonal quantum states, some fundamental issues have not been effectively addressed. For example, the local distinguishability of five orthogonal product states (OPSs) is still unknown up to now. In this paper, we give the properties of local distinguishability of five OPSs on bipartite and tripartite quantum systems. Firstly, to characterize the structure of a set of bipartite OPSs, we propose the concept of the vector of orthogonal relations for a set of bipartite OPSs. Secondly, we classify the structures of five bipartite OPSs into six categories by this concept and prove that five of these six categories can be perfectly distinguished by local operations and classical communication (LOCC). Thirdly we show that the local distinguishability of each case of the sixth category singly. On the other hand, we first divide the structures of five tripartite OPSs into eight categories by the vectors of orthogonal relations of five tripartite OPSs. Then we give the local distinguishability of each category. Our work enriches the research results of quantum nonlocality and will provide a clear understanding of the local distinguishability of five OPSs. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2512.00484 [quant-ph] (or arXiv:2512.00484v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2512.00484 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Guang-Bao Xu [view email] [v1] Sat, 29 Nov 2025 13:33:44 UTC (570 KB) Full-text links: Access Paper: View a PDF of the paper titled Local distinguishability of five orthogonal product states on bipartite and tripartite quantum systems, by Guang-Bao Xu and 3 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2025-12 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)

Read Original

Source Information

Source: arXiv Quantum Physics

Discussion

0 professional contributions

Sign in to join this professional discussion.

Be the first to add a constructive contribution.