{"id":1822,"date":"2025-04-25T09:54:59","date_gmt":"2025-04-25T09:54:59","guid":{"rendered":"https:\/\/www.toshiba.eu\/quantum\/?post_type=news&#038;p=1822"},"modified":"2025-04-25T10:37:59","modified_gmt":"2025-04-25T10:37:59","slug":"toshiba-breakthrough-on-national-quantum-networking","status":"publish","type":"news","link":"https:\/\/www.toshiba.eu\/quantum\/news\/toshiba-breakthrough-on-national-quantum-networking\/","title":{"rendered":"Toshiba breakthrough brings quantum communications to existing national-scale telecommunications infrastructure"},"content":{"rendered":"\n<ul class=\"wp-block-list\">\n<li><strong>Simple semiconductor technology replaces complex cryogenic components allowing quantum communications to be deployed to standard telecoms infrastructure<\/strong><\/li>\n\n\n\n<li><strong>Technology deployed to colocation data centres and production fibre network in Germany<\/strong><\/li>\n\n\n\n<li><strong>Long-distance coherence unlocks a range of new technologies to support progress towards global quantum internet<\/strong><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-group is-content-justification-left is-nowrap is-layout-flex wp-container-core-group-is-layout-f56a869c wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-1024x576.jpg\" alt=\"A graphic depicting the network map used in the test.\" class=\"wp-image-1839\" style=\"width:848px;height:auto\" srcset=\"https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-1024x576.jpg 1024w, https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-300x169.jpg 300w, https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-768x432.jpg 768w, https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-1536x864.jpg 1536w, https:\/\/www.toshiba.eu\/quantum\/wp-content\/uploads\/2025\/04\/QKD_nature_illus_type_ol_cmyk_f1-2048x1152.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Illustration of the world-first network trial.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p><strong>24<sup>th<\/sup> April 2025, Cambridge, UK<\/strong>: Toshiba Europe Ltd. today announced the success of a world-first trial of its new coherent quantum communication technology, redefining the limits of secure communication while seamlessly integrated into standard telecom infrastructure. By using simple semiconductor technology instead of complex cryogenic components, this breakthrough unlocks new possibilities for sharing quantum-safe information across both national and international distances and paving the way for new quantum-enhanced applications.<\/p>\n\n\n\n<p>Advancements in quantum physics are promising unparalleled performance across a range of technologies, including computing power, secure communications and precision sensing. However, practical applications of quantum have remained challenging. Coherent quantum communications (quantum information encoded in the phase of light) can be scrambled by just a few metres of propagation along optical fibres, usually requiring a laboratory-grade cryogenically cooled detection system to provide stability. The cost and complexity of this cryogenic cooling technology means that organisations haven\u2019t been able to benefit from the rapid advancements in quantum physics in real-world applications.<\/p>\n\n\n\n<p>Now, with this world-first trial by Toshiba, published in <a href=\"https:\/\/www.nature.com\/articles\/s41586-025-08801-w\">leading journal Nature<\/a>, coherent quantum communications can be deployed on standard telecommunications infrastructure. The key breakthrough is a new system architecture that replaces unwieldy, complex cryogenic components with simple semiconductor-based devices. For the first time in a real-life deployment, quantum information encoded in the phase of a quantum light signal was shown to be perfectly stable, despite propagating over 250 km of deployed telecom fibre, using only off-the-shelf components and operating in a typical colocation data centre at room temperature.<\/p>\n\n\n\n<p>Mirko Pittaluga, Lead Author of the study said, <em>\u201cThrough this trial, we completely re-engineered the way that quantum information is measured and stabilised, with a unique optical configuration that completely eliminates the need for cryogenic lab-grade equipment\u201d. <\/em>Robert Woodward, Team Leader at Toshiba Europe added<em> \u201cThe key breakthrough was using semiconductor avalanche photodiodes. This hugely simplifies deployment and enables it to go from the lab to national and international networks.\u201d<\/em><\/p>\n\n\n\n<p>Toshiba used this trial to demonstrate provably-secure communication over national-scale distances through its twin field quantum key distribution (QKD) protocol. QKD allows users to securely exchange confidential information (such as bank statements and health records) over an untrusted communication channel. Unlike other existing security solutions, the security of QKD derives directly from the laws of physics, meaning that it is secure against any future advancements in mathematics and computing (including the advent of quantum computers).<\/p>\n\n\n\n<p>Toshiba invented the twin-field QKD protocol in 2018, a new technique that helps to extend the viable range of QKD, which is limited by fibre loss. Until now, however, twin-field QKD, as a form of coherent quantum communications, had remained limited to lab-based tests. This world-first breakthrough means that twin-field QKD, along with other forms of coherent quantum communications, can start moving to real-life deployments across national and international networks, paving the way for widespread adoption of QKD for protecting operation-critical communications for businesses and governments.<\/p>\n\n\n\n<p>Toshiba has led the way in quantum-safe technologies such as QKD since 1999, achieving a series of research world-firsts alongside commercialising the technology, such as through the opening of a <a href=\"https:\/\/www.toshiba.eu\/quantum\/news\/bt-and-toshiba-launch-first-commercial-trial-of-quantum-secured-communication-services\/\">quantum-safe communication network in London in partnership with BT<\/a>, working with customers including <a href=\"https:\/\/www.toshiba.eu\/quantum\/news\/hsbc-becomes-first-bank-to-join-the-uks-pioneering-commercial-quantum-secure-metro-network\/\">leading banks like HSBC<\/a> to deploy QKD, and partnering with companies like <a href=\"https:\/\/www.toshiba.eu\/quantum\/insights\/toshiba-open-sessions-2023-chapter-2-todays-quantum-challenges-tomorrows-secure-solutions\/\">AWS<\/a> and <a href=\"https:\/\/www.toshiba.eu\/quantum\/news\/uk-first-quantum-secure-data-centre-to-data-centre-connection\/\">Equinix<\/a> to further develop networking applications for QKD.<\/p>\n\n\n\n<p>Andrew Shields, Vice President and Head of Quantum Technology at Toshiba Europe, said, <em>\u201cWe are proud of the world-firsts we\u2019ve achieved in QKD development and commercialisation at Toshiba. This trial represents another significant milestone in scaling QKD even further towards our end-goal of building a quantum internet that connects major cities and countries together, with quantum-safe protection at its core.\u201d<\/em><\/p>\n\n\n\n<p>The work was partially funded by the EU through the H2020 project, OpenQKD, in addition to receiving funding from the Ministry of Internal Affairs and Communications, Japan, via the project of ICT priority technology (JPMI00316) \u201cResearch and Development for Construction of a Global Quantum Cryptography Network.\u201d<\/p>\n\n\n\n<p><strong><u>About Toshiba<\/u><\/strong><strong><\/strong><\/p>\n\n\n\n<p>As Toshiba Group celebrates its 150<sup>th<\/sup> anniversary in 2025, it is enhancing its management structure, streamlining operations, and investing in forward-looking businesses to build foundations for new growth. This will allow it to continue to support advances toward a sustainable future with products and services developed by its wide range of businesses in the energy, infrastructure, and electronic devices domains.<\/p>\n\n\n\n<p>Guided by its corporate philosophy, \u201cCommitted to People, Committed to the Future,\u201d Toshiba brings industry-leading capabilities in green transformation (GX) and digital transformation (DX) to solutions for companies addressing the many challenges faced by modern society. By leveraging the power of data derived from its constantly evolving products and solutions, the Group is determined to help to achieve carbon neutrality and a circular economy. In fiscal year 2023, Toshiba Group generated annual sales of 3.3 trillion yen, and had 105,000 employees around the world.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>24th April 2025, Cambridge, UK: Toshiba Europe Ltd. today announced the success of a world-first trial of its new coherent quantum communication technology, redefining the limits of secure communication while&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"template":"","tags":[24,51],"product":[15],"industry":[26],"content-type":[14],"class_list":["post-1822","news","type-news","status-publish","hentry","tag-quantum-key-distribution","tag-quantum-secure-networking","product-quantum-key-distribution","industry-telecommunications","content-type-press-release"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Toshiba breakthrough brings quantum communications to existing national-scale telecommunications infrastructure - 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