{"id":13413,"date":"2025-01-22T22:00:00","date_gmt":"2025-01-22T22:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=13413"},"modified":"2025-01-08T03:07:44","modified_gmt":"2025-01-08T03:07:44","slug":"quantum-chip-2025-advances-how-it-works-quantum-computing-january-2025","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/quantum-chip-2025-advances-how-it-works-quantum-computing-january-2025\/","title":{"rendered":"2025 will see huge advances in quantum computing. So what is a quantum chip and how does it\u00a0work?"},"content":{"rendered":"\n<div class=\"theconversation-article-body\">\n    <figure>\n      <img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/640664\/original\/file-20250106-17-a8rgt1.jpg?ixlib=rb-4.1.0&#038;rect=224%2C86%2C3437%2C1965&#038;q=45&#038;auto=format&#038;w=754&#038;fit=clip\" >\n        <figcaption>\n          \n          <span class=\"attribution\"><a class=\"source\" href=\"https:\/\/www.shutterstock.com\/image-photo\/central-processing-unit-cpu-circuit-board-1372477385\" target=\"_blank\" rel=\"noopener\">Motion Loop\/Shutterstock<\/a><\/span>\n        <\/figcaption>\n    <\/figure>\n\n  <span><a href=\"https:\/\/theconversation.com\/profiles\/muhammad-usman-1441240\" target=\"_blank\" rel=\"noopener\">Muhammad Usman<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/csiro-1035\" target=\"_blank\" rel=\"noopener\">CSIRO<\/a><\/em><\/span>\n\n  <p>In recent years, the field of quantum computing has been experiencing fast growth, with <a href=\"https:\/\/blog.google\/technology\/research\/google-willow-quantum-chip\/\" target=\"_blank\" rel=\"noopener\">technological advances<\/a> and <a href=\"https:\/\/www.abc.net.au\/news\/science\/2024-10-04\/psiquantum-quantum-computer-investment-billion-dollars\/104394996\" target=\"_blank\" rel=\"noopener\">large-scale investments<\/a> regularly making the news.<\/p>\n\n<p>The United Nations has designated <a href=\"https:\/\/quantum2025.org\/en\/\" target=\"_blank\" rel=\"noopener\">2025 as the International Year of Quantum Science and Technology<\/a>.<\/p>\n\n<p>The stakes are high \u2013 having quantum computers would mean access to tremendous data processing power compared to what we have today. They won\u2019t replace your normal computer, but having this kind of awesome computing power will provide advances in medicine, chemistry, materials science and other fields.<\/p>\n\n<p>So it\u2019s no surprise that quantum computing is rapidly becoming a global race, and private industry and governments around the world are rushing to build the world\u2019s first full-scale quantum computer. To achieve this, first we need to have stable and scalable quantum processors, or chips.<\/p>\n\n<h2 id=\"what-is-a-quantum-chip\">What is a quantum chip?<\/h2>\n\n<p>Everyday computers \u2013 like your laptop \u2013 are classical computers. They store and process information in the form of binary numbers or bits. A single bit can represent either 0 or 1. <\/p>\n\n<p>By contrast, the basic unit of a quantum chip is a qubit. A quantum chip is made up of many qubits. These are typically subatomic particles such as electrons or photons, controlled and manipulated by specially designed electric and magnetic fields (known as control signals). <\/p>\n\n<p>Unlike a bit, a qubit can be placed in a state of 0, 1, or a combination of both, also known as a \u201csuperposition state\u201d. This distinct property allows quantum processors to store and process extremely large data sets exponentially faster than even the most powerful classical computer.   <\/p>\n\n<figure>\n            <iframe loading=\"lazy\" width=\"440\" height=\"260\" src=\"https:\/\/www.youtube.com\/embed\/B3U1NDUiwSA?wmode=transparent&amp;start=0\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe>\n            \n          <\/figure>\n\n<p>There are different ways to make qubits \u2013 one can use superconducting devices, semiconductors, photonics (light) or other approaches. Each method has its advantages and drawbacks.<\/p>\n\n<p>Companies like <a href=\"https:\/\/www.ibm.com\/roadmaps\/quantum\/\" target=\"_blank\" rel=\"noopener\">IBM<\/a>, <a href=\"https:\/\/quantumai.google\/roadmap\" target=\"_blank\" rel=\"noopener\">Google<\/a> and <a href=\"https:\/\/www.quera.com\/our-quantum-roadmap\" target=\"_blank\" rel=\"noopener\">QueRa<\/a> all have roadmaps to drastically scale up quantum processors by 2030.<\/p>\n\n<p>Industry players that use semiconductors are <a href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/research\/quantum-computing.html\" target=\"_blank\" rel=\"noopener\">Intel<\/a> and Australian companies like <a href=\"https:\/\/diraq.com\/\" target=\"_blank\" rel=\"noopener\">Diraq<\/a> and <a href=\"https:\/\/sqc.com.au\/\" target=\"_blank\" rel=\"noopener\">SQC<\/a>. Key photonic quantum computer developers include <a href=\"https:\/\/www.psiquantum.com\/\" target=\"_blank\" rel=\"noopener\">PsiQuantum<\/a> and <a href=\"https:\/\/www.xanadu.ai\/photonics\/\" target=\"_blank\" rel=\"noopener\">Xanadu<\/a>.  <\/p>\n\n<h2 id=\"qubits-quality-versus-quantity\">Qubits: quality versus quantity<\/h2>\n\n<p>How many qubits a quantum chip has is actually less important than the <em>quality<\/em> of the qubits.<\/p>\n\n<p>A quantum chip made up of thousands of low-quality qubits will be unable to perform any useful computational task. <\/p>\n\n<p>So, what makes for a quality qubit?<\/p>\n\n<p>Qubits are very sensitive to unwanted disturbances, also known as errors or noise. This noise can come from many sources, including imperfections in the manufacturing process, control signal issues, changes in temperature, or even just an interaction with the qubit\u2019s environment.<\/p>\n\n<p>Being prone to errors reduces the reliability of a qubit, known as fidelity. For a quantum chip to stay stable long enough to perform complex computational tasks, it needs high-fidelity qubits.  <\/p>\n\n<p>When researchers compare the performance of different quantum chips, qubit fidelity is one of the crucial parameters they use.<\/p>\n\n<h2 id=\"how-do-we-correct-the-errors\">How do we correct the errors?<\/h2>\n\n<p>Fortunately, we don\u2019t have to build perfect qubits. <\/p>\n\n<p>Over the last 30 years, researchers have designed theoretical techniques which use many imperfect or low-fidelity qubits to encode an abstract \u201clogical qubit\u201d. A logical qubit is protected from errors and, therefore, has very high fidelity. A useful quantum processor will be based on many logical qubits.<\/p>\n\n<p>Nearly all major quantum chip developers are now putting these theories into practice, shifting their focus from qubits to logical qubits. <\/p>\n\n<p>In 2024, many quantum computing researchers and companies made great progress on quantum error corrections, including <a href=\"https:\/\/research.google\/blog\/making-quantum-error-correction-work\/\" target=\"_blank\" rel=\"noopener\">Google<\/a>, <a href=\"https:\/\/thequantuminsider.com\/2024\/12\/27\/magic-state-distillation-demonstrated-in-neutral-atom-quantum-computers\/\" target=\"_blank\" rel=\"noopener\">QueRa<\/a>, <a href=\"https:\/\/www.ibm.com\/quantum\/blog\/nature-qldpc-error-correction\" target=\"_blank\" rel=\"noopener\">IBM<\/a> and <a href=\"https:\/\/arxiv.org\/abs\/2412.01446\" target=\"_blank\" rel=\"noopener\">CSIRO<\/a>.<\/p>\n\n<p>Quantum chips consisting of over 100 qubits are already available. They are being used by many researchers around the world to evaluate how good the current generation of quantum computers are and how they can be made better in future generations.<\/p>\n\n<p>For now, developers have only made single logical qubits. It will likely take a few years to figure out how to put several logical qubits together into a quantum chip that can work coherently and solve complex real-world problems. <\/p>\n\n<h2 id=\"what-will-quantum-computers-be-useful-for\">What will quantum computers be useful for?<\/h2>\n\n<p>A fully functional quantum processor would be able to solve extremely complex problems. This could lead to <a href=\"https:\/\/www.csiro.au\/en\/work-with-us\/services\/consultancy-strategic-advice-services\/csiro-futures\/future-industries\/quantum\" target=\"_blank\" rel=\"noopener\">revolutionary impact<\/a> in <a href=\"https:\/\/action.deloitte.com\/insight\/1291\/quantum-computers-may-revolutionize-chemistry-randd\" target=\"_blank\" rel=\"noopener\">many areas of research<\/a>, technology and economy.<\/p>\n\n<p>Quantum computers could help us discover new medicines and <a href=\"https:\/\/www.forbes.com\/councils\/forbesbusinessdevelopmentcouncil\/2024\/10\/15\/how-quantum-computing-is-accelerating-drug-discovery-and-development\/\" target=\"_blank\" rel=\"noopener\">advance medical research<\/a> by finding new connections in clinical trial data or genetics that current computers don\u2019t have enough processing power for.<\/p>\n\n<p>They could also greatly improve the safety of various systems that <a href=\"https:\/\/theconversation.com\/from-self-driving-cars-to-military-surveillance-quantum-computing-can-help-secure-the-future-of-ai-systems-206177\" target=\"_blank\" rel=\"noopener\">use artificial intelligence algorithms<\/a>, such as banking, military targeting and autonomous vehicles, to name a few.<\/p>\n\n<p>To achieve all this, we first need to reach a milestone known as quantum supremacy \u2013 where a quantum processor solves a problem that would take a classical computer an impractical amount of time to do.<\/p>\n\n<p>Late last year, Google\u2019s quantum chip Willow finally <a href=\"https:\/\/blog.google\/technology\/research\/google-willow-quantum-chip\/\" target=\"_blank\" rel=\"noopener\">demonstrated quantum supremacy<\/a> for a contrived task \u2013 a computational problem designed to be hard for classical supercomputers but easy for quantum processors due to their distinct way of working.<\/p>\n\n<p>Although it didn\u2019t solve a useful real-world problem, it\u2019s still a remarkable achievement and an important step in the right direction that\u2019s taken years of research and development. After all, to run, one must first learn to walk.<\/p>\n\n<h2 id=\"whats-on-the-horizon-for-2025-and-beyond\">What\u2019s on the horizon for 2025 and beyond?<\/h2>\n\n<p>In the next few years, quantum chips will continue to scale up. Importantly, the next generation of quantum processors will be underpinned by logical qubits, able to tackle increasingly useful tasks. <\/p>\n\n<p>While quantum hardware (that is, processors) has been progressing at a rapid pace, we also can\u2019t overlook an enormous amount of research and development in the field of quantum software and algorithms. <\/p>\n\n<p>Using quantum simulations on normal computers, researchers have been developing and testing various quantum algorithms. This will make quantum computing ready for useful applications when the quantum hardware catches up. <\/p>\n\n<p>Building a full-scale quantum computer is a daunting task. It will require simultaneous advancements on many fronts, such as scaling up the number of qubits on a chip, improving the fidelity of the qubits, better error correction, quantum software, quantum algorithms, and several other sub-fields of quantum computing.<\/p>\n\n<p>After years of remarkable foundational work, we can expect 2025 to bring new breakthroughs in all of the above.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"The Conversation\"  width=\"1\"  height=\"1\"  style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important\"  referrerpolicy=\"no-referrer-when-downgrade\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/counter.theconversation.com\/content\/246336\/count.gif?distributor=republish-lightbox-basic\" ><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n\n  <p><span><a href=\"https:\/\/theconversation.com\/profiles\/muhammad-usman-1441240\" target=\"_blank\" rel=\"noopener\">Muhammad Usman<\/a>, Head of Quantum Systems and Principal Research Scientist, <em><a href=\"https:\/\/theconversation.com\/institutions\/csiro-1035\" target=\"_blank\" rel=\"noopener\">CSIRO<\/a><\/em><\/span><\/p>\n\n  <p>This article is republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"noopener\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/2025-will-see-huge-advances-in-quantum-computing-so-what-is-a-quantum-chip-and-how-does-it-work-246336\" target=\"_blank\" rel=\"noopener\">original article<\/a>.<\/p>\n<\/div>\n\n\n\n\n<p class=\"\"><\/p>\n\n\n\n<p class=\"\"><\/p>\n","protected":false},"excerpt":{"rendered":"Motion Loop\/Shutterstock Muhammad Usman, CSIRO In recent years, the field of quantum computing has been experiencing fast growth,&hellip;\n","protected":false},"author":1049,"featured_media":13415,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"https:\/\/live.staticflickr.com\/4403\/23518086798_3d3af8313e_b.jpg","fifu_image_alt":"","footnotes":""},"categories":[15,16],"tags":[3618,3607,3603,3610,3601,3613,3616,3612,3617,3615,3623,3604,3600,3605,3609,3608,3620,3606,3602,3619,3614,3611,3622,474,3621],"class_list":{"0":"post-13413","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-engineering","8":"category-tech","9":"tag-diraq-quantum-computing","10":"tag-google-quantum-computing","11":"tag-ibm-quantum-roadmap","12":"tag-international-year-of-quantum-science","13":"tag-logical-qubits","14":"tag-medical-advancements-quantum-computing","15":"tag-photonic-quantum-computers","16":"tag-psiquantum-innovations","17":"tag-quantum-ai-safety","18":"tag-quantum-algorithms","19":"tag-quantum-applications-materials-science","20":"tag-quantum-chip","21":"tag-quantum-computing-2025","22":"tag-quantum-error-correction","23":"tag-quantum-hardware-advancements","24":"tag-quantum-processor-breakthroughs","25":"tag-quantum-software-research","26":"tag-quantum-supremacy","27":"tag-qubit-technology","28":"tag-scaling-quantum-processors","29":"tag-semiconductor-qubits","30":"tag-sqc-australia","31":"tag-superconducting-qubits","32":"tag-the-conversation","33":"tag-xanadu-quantum-technology","34":"cs-entry","35":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/1049"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=13413"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13413\/revisions"}],"predecessor-version":[{"id":13414,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/13413\/revisions\/13414"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/13415"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=13413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=13413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=13413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}