{"id":21965,"date":"2026-09-16T03:25:37","date_gmt":"2026-09-16T03:25:37","guid":{"rendered":"https:\/\/8657085.xyz\/?p=21965"},"modified":"2026-09-16T03:25:37","modified_gmt":"2026-09-16T03:25:37","slug":"tiny-sound-waves-could-solve-a-big-quantum-challenge","status":"publish","type":"post","link":"https:\/\/8657085.xyz\/?p=21965","title":{"rendered":"Tiny sound waves could solve a big quantum challenge"},"content":{"rendered":"<p> <div style=\"display: grid; grid-template-columns: 300px 160px; gap: 2px; width: 460px; background: #eee; padding: 2px;\">\r\n\r\n  <!-- \u6574\u884c\u5bbd\u5e7f\u544a -->\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876674\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 90px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876676\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n\r\n  <!-- \u5de6\u4fa7\u7ad6\u6392 -->\r\n  <div style=\"height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876672\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"height: 500px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876680\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n\r\n  <!-- \u53f3\u4fa7\u6469\u5929\u697c\uff08\u548c\u5de6\u4fa7\u5b8c\u5168\u5bf9\u9f50\uff09 -->\r\n  <div style=\"grid-row: 3\/5; height: 750px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876678\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  \r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e6\" data-zoneid=\"5876682\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n<\/div><br \/>\n<\/p>\n<div style=\"padding-right:0;padding-left:0\">\n<p class=\"wp-block-paragraph\">Quantum computing has long promised revolutionary advances in fields ranging from drug discovery and materials science to cryptography and artificial intelligence. Yet one stubborn obstacle continues to slow progress: keeping fragile quantum information stable long enough to be useful. Now, researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have reported a breakthrough that could help overcome that challenge, using an unconventional tool: sound. <\/p>\n<p class=\"wp-block-paragraph\">The study, published in <em>Nature Physics<\/em>, demonstrates how microscopic sound waves can protect quantum information stored in a diamond-based quantum bit, or qubit, extending its coherence time by approximately threefold. The advance points towards a future in which sound-based quantum networks are built directly onto semiconductor chips, potentially offering a more compact alternative to today\u2019s photonic approaches. <\/p>\n<p class=\"wp-block-paragraph\">Quantum computers derive their power from qubits, which can exist in multiple states simultaneously, unlike conventional computer bits that are either zero or one. However, qubits are notoriously delicate. Interactions with their environment can rapidly destroy their quantum state, a process known as decoherence. The longer a qubit can maintain coherence, the more useful it becomes for computation and communication. Much of the global race towards practical quantum computing therefore centres on extending coherence times and reducing environmental noise. Several companies and research institutions are developing quantum processors based on superconducting circuits, trapped ions, photons, and diamond defects. Regardless of the platform, maintaining coherence remains one of the defining engineering challenges.<\/p>\n<h2 id=\"h-using-sound-instead-of-light\" class=\"wp-block-heading\">Using sound instead of light<\/h2>\n<p class=\"wp-block-paragraph\">The Harvard team focused on an emerging concept known as a phononic quantum network. In these systems, quantum information is stored in electron spins associated with defects in diamond and transported by phonons, which are quantum packets of mechanical vibration.<\/p>\n<p class=\"wp-block-paragraph\">While photons, the particles of light, are the most familiar carriers of quantum information, phonons offer several intriguing advantages. According to the researchers, phonons possess far shorter wavelengths than light at the same operating frequency, enabling the construction of much smaller devices. This could allow more densely integrated quantum circuits and networks on a chip.  Another advantage is flexibility. Phonons can interact strongly with both solid-state spins and electromagnetic fields, making them potentially valuable for hybrid quantum architectures that combine different types of qubits and communication systems. <\/p>\n<p class=\"wp-block-paragraph\">Central to the Harvard work is a structure known as a phononic cavity. This device traps mechanical vibrations in much the same way an optical cavity traps light. The cavity enables stronger interactions between the mechanical vibrations and a silicon-vacancy spin qubit embedded within diamond. Silicon-vacancy centres are defects in the diamond crystal lattice that exhibit attractive quantum properties and are increasingly viewed as promising candidates for quantum networking applications. <\/p>\n<p class=\"wp-block-paragraph\">Historically, strong coupling between qubits and phonons came with a trade-off. Techniques commonly used to protect quantum memories, such as microwave pulse sequences, do not work particularly well when qubits are embedded inside phononic cavities. As a result, researchers have struggled to achieve both strong spin-phonon interactions and long coherence times simultaneously.<\/p>\n<h2 id=\"h-creating-a-dressed-qubit\" class=\"wp-block-heading\">Creating a \u201cdressed\u201d qubit<\/h2>\n<p class=\"wp-block-paragraph\">The breakthrough came when the researchers adopted a radically different approach to noise protection. Rather than using microwave pulses, they continuously applied a mechanical driving field composed entirely of phonons. This altered the properties of the qubit, creating what physicists call a \u201cdressed\u201d qubit. Much like protective clothing shields a person from environmental hazards, the continuous acoustic field shields the qubit from certain types of environmental noise.<\/p>\n<p class=\"wp-block-paragraph\">The result is an \u201call-mechanical coherence protection\u201d system that remains fully compatible with the phononic cavity itself. This means the same mechanical architecture that transports quantum information could also help preserve it.  Lead researcher Eliza Cornell explained that the objective was to solve two critical challenges at the same time: achieving strong interactions between qubits and phonons while also maintaining long coherence times.<\/p>\n<p class=\"wp-block-paragraph\">The practical result was significant. By continuously surrounding the qubit with mechanical vibrations, the team was able to extend coherence time by roughly a factor of three. In the quantum world, where even modest improvements can have major implications for scalability and error correction, such an increase represents an important advance.<\/p>\n<p class=\"wp-block-paragraph\">The study also demonstrated exceptionally fast quantum control, reporting Rabi frequencies reaching 800 MHz, which could enable faster quantum operations in future devices. Taken together, the findings indicate that mechanical approaches could become powerful tools not only for transmitting quantum information but also for safeguarding it.<\/p>\n<p class=\"wp-block-paragraph\">One of the most intriguing aspects of the work is the potential dual role of phonons. In most quantum networking concepts, the mechanism that carries information is separate from the one that protects it. Harvard\u2019s approach suggests that phonons may perform both functions simultaneously. This could simplify device architectures and reduce the complexity of future quantum chips.<\/p>\n<p class=\"wp-block-paragraph\">For the broader quantum technology sector, the research strengthens interest in hybrid systems that combine different approaches rather than relying on a single qubit technology. Hybrid architectures could eventually bring together spin qubits, superconducting circuits, photonic networks and mechanical systems into unified platforms.  There is still considerable work ahead before commercial sound-based quantum networks become reality. Researchers will need to demonstrate scalability, reliability and integration with existing semiconductor manufacturing techniques.<\/p>\n<\/div>\n<p><!-- \u603b\u5bb9\u5668\uff1a\u6700\u5927\u5bbd908px Grid\u7d27\u51d1\u5e03\u5c40 -->\r\n<div style=\"display: grid; grid-template-columns: 728px 160px; gap:2px; width:908px; background:#eee; padding:2px;\">\r\n\r\n  <!-- \u901a\u680f\u9876\u90e8\uff1a\u6700\u5927\u6a2a\u5e45 908x258 \u8de8\u6574\u884c -->\r\n  <div style=\"grid-column:1\/-1; height:258px; background:#ff6b6b; display:grid; place-items:center;\">\r\n    <!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114307\" data-width=\"908\" data-height=\"258\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114307});<\/script>\r\n<!--JuicyAds END-->\r\n  <\/div>\r\n\r\n  <!-- \u7b2c\u4e8c\u901a\u680f\uff1a728\u00d790 \u901a\u680f -->\r\n  <div style=\"grid-column:1\/-1; 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display:grid; place-items:center;\">\r\n\t<!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114302\" data-width=\"133\" data-height=\"139\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114302});<\/script>\r\n<!--JuicyAds END-->\r\n\t<\/div>\r\n    <div style=\"height:125px; background:#91e7ac; display:grid; place-items:center;\">\r\n\t\r\n<!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114303\" data-width=\"125\" data-height=\"125\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114303});<\/script>\r\n<!--JuicyAds END-->\r\n\t<\/div>\r\n  <\/div>\r\n\r\n  <!-- \u53f3\u4fa7\u7ad6\u680f\uff1a160\u00d7600 \u6574\u5217\u9ad8\u5e7f\u544a -->\r\n  <div style=\"grid-row:3\/8; height:600px;  display:grid; place-items:center;\">\r\n    <!-- JuicyAds v3.0 -->\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async src=\"https:\/\/poweredby.jads.co\/js\/jads.js\"><\/script>\r\n<ins id=\"1114301\" data-width=\"160\" data-height=\"600\"><\/ins>\r\n<script type=\"text\/javascript\" data-cfasync=\"false\" async>(adsbyjuicy = window.adsbyjuicy || []).push({'adzone':1114301});<\/script>\r\n<!--JuicyAds END-->\r\n  <\/div>\r\n\r\n<\/div><br \/>\n<br \/> Tiny sound waves could solve a big quantum challenge<br \/>\n<br \/>#Tiny #sound #waves #solve #big #quantum #challenge<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quantum computing has long promised revolutionary advances in fields ranging from drug discovery and materials&#8230;<\/p>\n","protected":false},"author":1,"featured_media":19121,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[152,405,4695,1558,5382,4466,4030],"class_list":["post-21965","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stories","tag-big","tag-challenge","tag-quantum","tag-solve","tag-sound","tag-tiny","tag-waves"],"featured_image_urls":{"full":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",1024,681,false],"thumbnail":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-150x150.jpg",150,150,true],"medium":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-300x200.jpg",300,200,true],"medium_large":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-768x511.jpg",640,426,true],"large":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",640,426,false],"1536x1536":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",1024,681,false],"2048x2048":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",1024,681,false],"covernews-slider-full":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",1024,681,false],"covernews-slider-center":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-800x500.jpg",800,500,true],"covernews-featured":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01.jpg",1024,681,false],"covernews-medium":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-540x340.jpg",540,340,true],"covernews-medium-square":["https:\/\/8657085.xyz\/wp-content\/uploads\/2026\/07\/Germany-IBM-European-quantum-data-centre-\u00a9AFP-1K-01-400x250.jpg",400,250,true]},"author_info":{"display_name":"admin","author_link":"https:\/\/8657085.xyz\/?author=1"},"category_info":"<a href=\"https:\/\/8657085.xyz\/?cat=7\" rel=\"category\">Stories<\/a>","tag_info":"Stories","comment_count":"0","_links":{"self":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts\/21965","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=21965"}],"version-history":[{"count":0,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/posts\/21965\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=\/wp\/v2\/media\/19121"}],"wp:attachment":[{"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21965"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21965"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/8657085.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}