--- title: Can Quantum Save Democracy? Quantum Voting Experiments... description: Three recent laboratory experiments have moved quantum voting from theoretical protocols to actual demonstrations. Two experiments used entangled photons (GHZ... canonical: https://daily.dev/posts/can-quantum-save-democracy-quantum-voting-experiments-put-ballot-secrecy-and-election-security-to-t-cn4onkkmw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Can Quantum Save Democracy? Quantum Voting Experiments Put Ballot Secrecy and Election Security to the Test | daily.dev og:description: Three recent laboratory experiments have moved quantum voting from theoretical protocols to actual demonstrations. Two experiments used entangled photons (GHZ... og:url: https://daily.dev/posts/can-quantum-save-democracy-quantum-voting-experiments-put-ballot-secrecy-and-election-security-to-t-cn4onkkmw og:image: https://api.daily.dev/og/posts/CN4onkkMw.png og:image:alt: Can Quantum Save Democracy? Quantum Voting Experiments Put Ballot Secrecy and Election Security to the Test 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. # Can Quantum Save Democracy? Quantum Voting Experiments Put Ballot Secrecy and Election Security to the Test **[The Quantum Insider](https://daily.dev/sources/thequantuminsider)** · 10 min read · 0 upvotes · 0 comments ## Summary Three recent laboratory experiments have moved quantum voting from theoretical protocols to actual demonstrations. Two experiments used entangled photons (GHZ states) for elections with up to eight voters, while a third from Shanghai Jiao Tong University demonstrated a two-voter system over 50 kilometers of optical fiber using continuous-variable quantum technology. Key properties tested include ballot secrecy, voter authentication, and verifiable tallying without relying on trusted authorities. Major obstacles remain: scalability from four voters to millions, photon loss, noise, hardware imperfection, coercion resistance, and administrative complexity. Researchers suggest near-term applications are more realistic for small-scale elections, with hybrid quantum-classical approaches combining quantum anonymity mechanisms with post-quantum cryptography for authentication. ## 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 current state of quantum voting experiments and how many voters have been tested? Quantum voting has moved from theoretical protocols to small laboratory demonstrations. Two experiments used entangled photons for elections with up to eight voters, and a third demonstrated a two-voter system over 50 kilometers of standard optical fiber. The Geneva experiment achieved 89% fidelity for four-photon GHZ states and successful voting or verification about 87% of the time. All experiments remain far from national-election scale. _Developers working on election security or cryptographic protocols track quantum advances like these on daily.dev._ ### What are the main technical barriers preventing quantum voting from being used in real elections? Key barriers include photon loss over fiber, noise degrading quantum correlations, imperfect detectors, and the fundamental difficulty of distributing entangled states among thousands or millions of voters. Beyond physics, practical elections require voter eligibility checks, duplicate-vote prevention, dispute resolution, and coercion resistance — problems quantum mechanics does not automatically solve. Researchers suggest hybrid quantum-classical systems as the most realistic near-term path. _Teams evaluating cryptographic approaches to election integrity find the trade-offs debated on daily.dev._ ### How does continuous-variable quantum voting over optical fiber differ from photon-based entanglement approaches? Continuous-variable quantum systems encode information in continuously varying properties of light — amplitude and phase — rather than discrete photon states. The Shanghai Jiao Tong University prototype ran over 50 km of single-mode fiber, achieving authentication rates of 336–406 times per second and a quantum signing rate of 966 times per second. Its key advantage is compatibility with existing coherent optical telecommunications infrastructure, potentially easing deployment. _Engineers evaluating quantum networking options for secure communications follow developments like this on daily.dev._ ## Similar posts on daily.dev - [Quantum Voting System Shows Resilience to Noise on IBM Hardware](https://daily.dev/posts/quantum-voting-system-shows-resilience-to-noise-on-ibm-hardware-ekemdjxws) · The Quantum Insider · 0 upvotes · 0 comments - [Researchers validate measurement-protection quantum key distribution](https://daily.dev/posts/researchers-validate-measurement-protection-quantum-key-distribution-77czss8mn) · Phys.org · 1 upvotes · 0 comments - [Relativistic position verification with coherent states](https://daily.dev/posts/relativistic-position-verification-with-coherent-states-ktfmx14em) · Nature · 0 upvotes · 0 comments - [What is next in quantum advantage?](https://daily.dev/posts/what-is-next-in-quantum-advantage--2kq3wc9og) · Quantum Frontiers · 1 upvotes · 0 comments - [Quantum Networking Breakthrough Points to Key Security Gains](https://daily.dev/posts/quantum-networking-breakthrough-points-to-key-security-gains-rutlk0ch8) · Security Boulevard · 1 upvotes · 0 comments --- Tags: [#quantum-computing](https://daily.dev/tags/quantum-computing), [#cryptography](https://daily.dev/tags/cryptography) [View this post on daily.dev](https://daily.dev/posts/can-quantum-save-democracy-quantum-voting-experiments-put-ballot-secrecy-and-election-security-to-t-cn4onkkmw) ```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":"Can Quantum Save Democracy? 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