{"id":18376,"date":"2025-10-07T10:28:57","date_gmt":"2025-10-07T08:28:57","guid":{"rendered":"https:\/\/www.uni.lu\/snt-en\/?post_type=news&#038;p=18376"},"modified":"2025-12-11T15:22:00","modified_gmt":"2025-12-11T14:22:00","slug":"how-quantum-computing-is-transforming-space-research","status":"publish","type":"news","link":"https:\/\/www.uni.lu\/snt-en\/news\/how-quantum-computing-is-transforming-space-research\/","title":{"rendered":"How quantum computing is transforming space research\u00a0"},"content":{"rendered":"\n<section class=\"wp-block-unilux-blocks-free-section section\"><div class=\"container xl:max-w-screen-xl\">\n<p><em>Quantum computing opens new frontiers in space research. Researchers are using this technology to transform satellite communications.<\/em><\/p>\n\n\n\n<p>For space researchers, the sky has never been the limit. But the development of quantum computing in recent years has opened new doors to push research even further.&nbsp;<\/p>\n\n\n\n<p><a href=\"https:\/\/www.uni.lu\/snt-en\/people\/seid-koudia\/\" target=\"_blank\" rel=\"noreferrer noopener\">Dr Seid Koudia<\/a> specialises in satellite communications. This area faces many challenges. It needs a lot of energy and response times can be slow, especially over long distances. Also, choosing the right ground station for spacecraft communication remains a key obstacle.&nbsp;<\/p>\n\n\n\n<p>One of the most fundamental challenges in satellite communications is resource allocation &#8211; specifically, how to make the best use of limited satellite resources. This is where a classical optimisation challenge known as the Knapsack Problem comes into play.&nbsp;<\/p>\n\n\n<div class=\"wp-block-unilux-blocks-spacer is-spacer-size-sm\"><\/div>\n\n\n<h2 class=\"has-text-align-left wp-block-unilux-blocks-heading\"        id=\"the-knapsack-problem-in-satellite-communications\"\n    >\nThe Knapsack Problem in satellite communications<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/developers.google.com\/optimization\/pack\/knapsack\" target=\"_blank\" rel=\"noreferrer noopener\">Knapsack Problem<\/a> is about making the best choices when you have limits. It originally refers to the challenge of packing a backpack and having to decide which items are most important.&nbsp;&nbsp;<\/p>\n\n\n\n<p>In the context of space research, satellites must decide which data to transmit when they can&#8217;t send everything at once. Every piece of data (like text messages, video calls, or weather updates) takes up different amounts of the satellite&#8217;s resources and has different levels of importance.&nbsp;&nbsp;<\/p>\n\n\n\n<p>So the Knapsack Problem here is about figuring out the optimal mix of data to transmit to get the maximum value while staying within the satellite&#8217;s power and bandwidth limits. It\u2019s like deciding whether to pack one large, important item or several smaller, less critical ones in your backpack.&nbsp;<\/p>\n\n\n\n<p>While traditional methods struggle with scaling and real-time decisions due to complex data handling, quantum computing offers a solution.&nbsp;&nbsp;<\/p>\n\n\n<div class=\"wp-block-unilux-blocks-spacer is-spacer-size-sm\"><\/div>\n\n\n<h2 class=\"has-text-align-left wp-block-unilux-blocks-heading\"        id=\"using-quantum-computing-for-space-research\"\n    >\nUsing quantum computing for space research\u00a0<\/h2>\n\n\n\n<p>Quantum computing helps optimise energy resources, provides quick responses and chooses the best ground station for communication.&nbsp;<\/p>\n\n\n\n<p>Koudia explains: \u201cBy using variational quantum circuits, resources can be allocated more efficiently, improving satellite performance and communication efficiency.\u201d&nbsp;<\/p>\n\n\n\n<p>Variational quantum circuits (VQCs) are a type of quantum algorithm that combines both quantum and classical computing to solve complex problems. They\u2019re like adjustable quantum recipes where one can tune different parameters to get better results &#8211; like adjusting the knobs on a sound mixing board to get the perfect audio output.&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p>Because VQCs enhance signal encoding, they help approach channel capacity\u2014the maximum reliable information that can be transmitted through quantum channels. \u201cBy adjusting encoding schemes based on channel conditions, near-optimal performance can be achieved\u201d emphasises the Postdoctoral researcher at SnT.&nbsp;&nbsp;<\/p>\n\n\n\n<p>VQCs are valuable because they match today&#8217;s imperfect quantum computers perfectly. While quantum hardware still struggles with calculation errors, imprecise operations, and qubits that quickly lose information, VQCs only need the quantum computer for brief moments\u2014handling most of the complex work on regular computers instead.&nbsp;<\/p>\n\n\n<div class=\"wp-block-unilux-blocks-spacer is-spacer-size-sm\"><\/div>\n\n\n<h2 class=\"has-text-align-left wp-block-unilux-blocks-heading\"        id=\"navigating-quantum-computing-challenges\"\n    >\nNavigating quantum computing challenges\u00a0<\/h2>\n\n\n\n<p>Using quantum computing isn\u2019t as simple as it seems. These machines need a lot of computing power and are not readily available. For context, Luxembourg will receive its <a href=\"https:\/\/eurohpc-ju.europa.eu\/new-eurohpc-quantum-computer-be-hosted-luxembourg-2024-10-21_en\" target=\"_blank\" rel=\"noreferrer noopener\">first quantum computer<\/a> over the course of 2025.&nbsp;<\/p>\n\n\n\n<p>In the meantime, researchers use quantum computers on the cloud located in other countries. These computers range from a few qubits to nearly 500 qubits in power. But researchers need financial resources to access these computers. Depending on the quantum computer, users pay from zero and up to <a href=\"https:\/\/www.ibm.com\/quantum\/pricing\" target=\"_blank\" rel=\"noreferrer noopener\">96$ per minute of use<\/a>.&nbsp;&nbsp;<\/p>\n\n\n\n<p>\u201cQuantum computers suffer from extreme sensitivity, requiring extremely cold temperatures to operate properly, which makes them expensive and challenging to maintain\u201d, the Postdoctoral researcher explains. Their current development is also limited by having very few functional qubits, and they frequently produce errors in their calculations, reducing their reliability.&nbsp;<\/p>\n\n\n\n<p>But Koudia believes that the benefits of quantum computing outweigh its downsides, especially when using VQCs. This tool saves time, finds solutions that classical computers miss, is easy to use, and requires less data. These features help push many boundaries in research.&nbsp;<\/p>\n\n\n\n<p>\u201cIn summary, I would say that using a quantum computer is not rocket science. But quantum computing absolutely is and will advance rocket science.\u201d\u202f he says with a smile&nbsp;<\/p>\n\n\n<div class=\"wp-block-unilux-blocks-spacer is-spacer-size-sm\"><\/div>\n\n\n<h2 class=\"has-text-align-left wp-block-unilux-blocks-heading\"        id=\"about-sigcom\"\n    >\nAbout SigCom\u00a0<\/h2>\n\n\n\n<p>The Signal Processing and Communications (<a href=\"https:\/\/www.uni.lu\/snt-en\/research-groups\/sigcom\/\" target=\"_blank\" rel=\"noreferrer noopener\">SigCom<\/a>) research group conducts research aimed at designing, emulating, and testing new high-performance systems for the future of mobile and satellite communications. Fields of applications range from 5G\/6G telecommunications to satellite-based internet connectivity.&nbsp;<\/p>\n\n\n\n<p>\u202f&nbsp;<\/p>\n\n\n<div class=\"py-48 first:pt-0 last:pb-0 wp-block-unilux-blocks-people-list\">\n    \n<h2 class=\"has-text-align-left wp-block-unilux-blocks-heading\"        id=\"people-in-this-story\"\n    >\nPeople in this story<\/h2>\n<ul class=\"flex flex-wrap -mx-16 wp-block-unilux-blocks-people-item-wrapper\">\n    <li class=\"w-full md:w-1\/2 p-16 wp-block-unilux-blocks-people-item-automated\"><div class=\"ulux-card card-people bg-theme\"><div class=\"list-people bg-theme\">\n    <div class=\"list-people__container\">\n        <div class=\"list-people__visual\">\n            <figure class=\"wp-block-dev4-reusable-blocks-image\">\n                <!-- Template Image Component: default -->\n<img decoding=\"async\" class=\"w-full\" width=\"\" height=\"\" rel=\"\" alt=\"Dr. Seid KOUDIA\" src=\"https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB\" srcset=\"https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--thumbnail 150w,https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--medium 300w,https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--medium_large 768w,https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--large 1024w,https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--1536x1536 1536w,https:\/\/www.uni.lu\/en\/person-image\/NTAwNzUzNTJfX1NlaWQgS09VRElB--2048x2048 2048w\" loading=\"lazy\" \/><!-- end Image Component -->\n            <\/figure>\n        <\/div>\n        <div class=\"list-people__body\">\n            <h3 class=\"list-people__title\">Dr. Seid KOUDIA<\/h3>\n            <p class=\"list-people__description\">Research scientist<\/p>\n            <div class=\"wp-block-unilux-blocks-simple-cta wp-block-unilux-blocks-people-item-automated\">\n    <a\n        href=\"https:\/\/www.uni.lu\/snt-en\/people\/seid-koudia\/\"\n        title=\"Dr. Seid KOUDIA\"\n        class=\"link-text link-text--icon list-people__link link-absolute\"\n        target=\"\"\n    >\n        <span class=\"link-text__body\">\n            <span class=\"link-text__name\">Learn more<\/span>\n        <\/span>\n        <svg aria-hidden=\"true\" focusable=\"false\" class=\"icon icon-outline icon--arrow-right \"><use xlink:href=\"https:\/\/www.uni.lu\/wp-content\/themes\/unilux-theme\/assets\/images\/icons\/icons-outline.svg#icon--arrow-right\"><\/use><\/svg>    <\/a>\n<\/div>\n        <\/div>\n    <\/div>\n<\/div>\n<\/div><\/li><\/ul>\n\n<\/div>\n\n<\/div><\/section>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":66,"featured_media":18377,"template":"","format":"standard","meta":{"featured_image_focal_point":{"x":0.35,"y":0.3},"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false},"news-category":[4],"news-topic":[10,24],"organisation":[184],"authorship":[66],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How quantum computing is transforming space research\u00a0 - SnT news I University of Luxembourg<\/title>\n<meta name=\"description\" content=\"Quantum computing opens new frontiers in space research. 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