{"id":341160,"date":"2025-06-23T14:44:10","date_gmt":"2025-06-23T09:14:10","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=341160"},"modified":"2025-06-23T14:44:10","modified_gmt":"2025-06-23T09:14:10","slug":"quantum-communication-using-satellite","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/quantum-communication-using-satellite\/","title":{"rendered":"Quantum Communication Using Satellite"},"content":{"rendered":"<p><strong>News:<\/strong> As per the Indian Institute of Technology (IIT)-Delhi, India could be technologically capable of quantum communication using satellites in the next half a decade.<\/p>\n<h2>About Quantum Communication<\/h2>\n<figure id=\"attachment_341161\" aria-describedby=\"caption-attachment-341161\" style=\"width: 491px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\" wp-image-341161\" src=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?resize=491%2C275&#038;ssl=1\" alt=\"\" width=\"491\" height=\"275\" srcset=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?resize=300%2C168&amp;ssl=1 300w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?resize=1024%2C575&amp;ssl=1 1024w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?resize=768%2C431&amp;ssl=1 768w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?resize=1536%2C862&amp;ssl=1 1536w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2025\/06\/Source-The-Hindu-4.png?w=1562&amp;ssl=1 1562w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><figcaption id=\"caption-attachment-341161\" class=\"wp-caption-text\">Source &#8211; The Hindu<\/figcaption><\/figure>\n<ul>\n<li>Quantum communication is a field of technology that <strong>uses the principles of quantum mechanics<\/strong>\u2014especially the behavior of quantum <strong>particles like photons<\/strong>\u2014to <strong>transmit information<\/strong> in a way that is fundamentally secure and resistant to eavesdropping.<\/li>\n<li><strong>Key Features<\/strong>\n<ul>\n<li><strong>Quantum Key Distribution (QKD): <\/strong>The\u00a0encryption keys are shared using quantum states (such as the polarization of photons).\n<ul>\n<li>Any attempt to intercept or measure these quantum states disturbs them, <strong>revealing the presence<\/strong> of an eavesdropper.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Quantum entanglement:<\/strong> Information can be transmitted using entangled particles, where the <strong>state of one instantly influences the state of another<\/strong>, no matter the distance.<\/li>\n<li><strong>Unbreakable security:<\/strong> Because of the laws of quantum physics, quantum communication can provide <strong>theoretically unbreakable encryption.<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>Under <strong>National Quantum Mission (NQM)<\/strong> of India, a strong <strong>focus is to develop satellite-based long distance quantum communication.<\/strong><\/li>\n<\/ul>\n<h2>Quantum Communication Using Satellite<\/h2>\n<ul>\n<li>A <strong>quantum satellite<\/strong> is a communications satellite leveraging the <strong>principles of quantum physics to secure data transmissions.<\/strong><\/li>\n<li><strong>Significance<\/strong>\n<ul>\n<li>The emergence of quantum computers poses a threat to existing cryptographic systems.<\/li>\n<li>Quantum satellites aim to <strong>ensure secure communications<\/strong> by employing quantum cryptography particularly Quantum Key Distribution (QKD).<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Demonstrations from across the globe<\/h2>\n<ul>\n<li><strong>China:<\/strong> In 2017 and 2020, researchers of China generated quantum keys involving a satellite (500 km above the ground) and ground stations 1,000 and 1,700-km apart.<\/li>\n<li><strong>West:<\/strong> Since 2005, there have been ground demonstrations in <strong>Europe, Canada, and the United States<\/strong> of free-space (without cables) QKD greater than 100 km.<\/li>\n<li><strong>India:<\/strong> In 2022, scientists from the Department of Space (DOS) demonstrated quantum entanglement based real time Quantum Key Distribution (QKD) over a <strong>300-metre atmospheric channel<\/strong>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>News: As per the Indian Institute of Technology (IIT)-Delhi, India could be technologically capable of quantum communication using satellites in the next half a decade. About Quantum Communication Quantum communication is a field of technology that uses the principles of quantum mechanics\u2014especially the behavior of quantum particles like photons\u2014to transmit information in a way that&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/quantum-communication-using-satellite\/\">Continue reading <span class=\"screen-reader-text\">Quantum Communication Using Satellite<\/span><\/a><\/p>\n","protected":false},"author":10393,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,1738,12039],"tags":[11872],"class_list":["post-341160","post","type-post","status-publish","format-standard","hentry","category-daily-factly-articles","category-science-and-technology-daily-factly-articles","category-knolls","tag-9pm-daily-factly","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/341160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10393"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=341160"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/341160\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=341160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=341160"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=341160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}