--- title: Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum... description: Hefei Sizhen Chip Technology and USTC researchers have demonstrated multi-qubit photonic quantum states on a programmable silicon photonic integrated chip.... canonical: https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum States on Silicon Chip | daily.dev og:description: Hefei Sizhen Chip Technology and USTC researchers have demonstrated multi-qubit photonic quantum states on a programmable silicon photonic integrated chip.... og:url: https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0 og:image: https://api.daily.dev/og/posts/qJVhntLQ0.png og:image:alt: Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum States on Silicon Chip og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum States on Silicon Chip **[The Quantum Insider](https://daily.dev/sources/thequantuminsider)** · 3 min read · 0 upvotes · 0 comments ## Summary Hefei Sizhen Chip Technology and USTC researchers have demonstrated multi-qubit photonic quantum states on a programmable silicon photonic integrated chip. Using a measurement-based quantum computing (MBQC) approach with high-dimensional single-photon encoding, the team generated a 4-photon 16-qubit GHZ state — claimed to be the largest-scale entangled state on an optical quantum chip — and verified genuine entanglement of 10 qubits. A separate experiment prepared a 4-qubit cluster state and ran Grover's search algorithm, achieving an average identification probability of 0.987. The approach sidesteps the need for deterministic photon-photon interactions by shifting computational complexity to initial state preparation, potentially enabling scalable architectures toward million-qubit optical quantum computers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the largest entangled state demonstrated on an optical quantum chip? A 4-photon 16-qubit GHZ state, generated on a programmable silicon photonic integrated chip by Hefei Sizhen Chip Technology and USTC researchers, is described as the largest-scale entangled state demonstrated on an optical quantum chip to date. Genuine entanglement was verified for 10 of those qubits using the entanglement witnessing method. _Researchers tracking photonic quantum hardware milestones follow developments like this on daily.dev._ ### How does measurement-based quantum computing (MBQC) address the lack of deterministic two-qubit gates in photonic systems? MBQC shifts computational difficulty from executing logic gate operations at runtime to preparing an initial large-scale entangled state, then drives computation solely through single-qubit measurements. This sidesteps the absence of efficient deterministic photon-photon interactions in photonic systems, enabling universal quantum computation without them, and can achieve larger qubit scales under the same photon resource conditions. _Engineers evaluating quantum computing architectures for scalability find comparative coverage on daily.dev._ ## Similar posts on daily.dev - [Scientists realize a three-qubit quantum register in a silicon photonic chip](https://daily.dev/posts/scientists-realize-a-three-qubit-quantum-register-in-a-silicon-photonic-chip-yjm5va3id) · Phys.org · 0 upvotes · 0 comments - [Eight-qubit operation of a 300 mm SiMOS foundry-fabricated device](https://daily.dev/posts/eight-qubit-operation-of-a-300-mm-simos-foundry-fabricated-device-so2ycullm) · Nature · 0 upvotes · 0 comments --- Tags: [#quantum-computing](https://daily.dev/tags/quantum-computing) [View this post on daily.dev](https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum States on Silicon Chip","url":"https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0"},"datePublished":"2026-08-10T18:45:54.053Z","dateModified":"2026-08-10T18:46:17.188Z","description":"Hefei Sizhen Chip Technology and USTC researchers have demonstrated multi-qubit photonic quantum states on a programmable silicon photonic integrated chip....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e65eb54e62356330b6d78869b8362b54?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e65eb54e62356330b6d78869b8362b54?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Quantum Insider","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Quantum Insider","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/7b14a6b34c1b464c9e8a88d9a0dac951","url":"https://daily.dev/sources/thequantuminsider"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"quantum-computing","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Quantum Insider","item":"https://daily.dev/sources/thequantuminsider"},{"@type":"ListItem","position":3,"name":"Sizhen Chip Demonstrates Multi-Qubit Photonic Quantum States on Silicon Chip"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/sizhen-chip-demonstrates-multi-qubit-photonic-quantum-states-on-silicon-chip-qjvhntlq0#faq","mainEntity":[{"@type":"Question","name":"What is the largest entangled state demonstrated on an optical quantum chip?","acceptedAnswer":{"@type":"Answer","text":"A 4-photon 16-qubit GHZ state, generated on a programmable silicon photonic integrated chip by Hefei Sizhen Chip Technology and USTC researchers, is described as the largest-scale entangled state demonstrated on an optical quantum chip to date. 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