{"id":605922,"date":"2024-05-13T07:49:22","date_gmt":"2024-05-13T11:49:22","guid":{"rendered":"https:\/\/www.rochester.edu\/newscenter\/?p=605922"},"modified":"2024-05-15T09:49:20","modified_gmt":"2024-05-15T13:49:20","slug":"surface-acoustic-waves-techniques-quantum-internet-605922","status":"publish","type":"post","link":"https:\/\/www.rochester.edu\/newscenter\/surface-acoustic-waves-techniques-quantum-internet-605922\/","title":{"rendered":"New surface acoustic wave techniques could lead to surfing a quantum internet"},"content":{"rendered":"

Researchers develop new methods to couple light to sound waves that glide on surfaces.<\/strong><\/h2>\n

Researchers at the University of Rochester<\/a> used surface acoustic waves to overcome a significant obstacle in the quest to realize a quantum internet. In a new study<\/a> published in Nature Communications<\/em>, scientists from Rochester\u2019s Institute of Optics<\/a> and Department of Physics and Astronomy<\/a> describe a technique for pairing particles of light and sound that could be used to faithfully convert information stored in quantum systems\u2014qubits\u2014to optical fields, which can be transmitted over long distances.<\/p>\n

What are surface acoustic waves?<\/strong><\/h3>\n

Surface acoustic waves are vibrations that glide along the exterior of materials like a wave in the ocean or tremors along the ground during an earthquake. They are used for a variety of applications\u2014many of the electrical components of our phones have surface acoustic wave filters\u2014because they make very precise cavities that can be used for precise timing in uses like navigation. But scientists have begun using them in quantum applications as well.<\/p>\n

\u201cIn the last 10 years, surface acoustic waves have emerged as a good resource for quantum applications because the phonon, or individual particle of sound, couples very well to different systems,\u201d says William Renninger<\/a>, associate professor of optics and physics.<\/p>\n

\"Illustration
MAKING WAVES:<\/strong> Beams of light, shown in orange and blue, are shined on a surface acoustic wave resonator, where their interactions are controlled by a precisely designed cavity. Inside this echo chamber, the light becomes strongly coupled with the surface acoustic waves. (Illustration courtesy Arjun Iyer)<\/figcaption><\/figure>\n

Using existing methods, surface acoustic waves are accessed, manipulated, and controlled through piezoelectric materials to turn electricity into acoustic waves and vice versa. However, these electric signals must be applied to mechanical fingers inserted into the middle of the acoustic cavity, which cause parasitic effects by scattering phonons in ways that have to be compensated for.<\/p>\n

Using light to manipulate surface acoustic waves<\/strong><\/h3>\n

Rather than coupling the phonons to electric fields, Renninger\u2019s lab tried a less invasive approach, shining light on the cavities and eliminating the need for mechanical contact.<\/p>\n

\u201cWe were able to strongly couple surface acoustic waves with light,\u201d says Arjun Iyer, an optics PhD student<\/a> and first author of the paper. \u201cWe designed acoustic cavities, or tiny echo chambers, for these waves where sound could last for a long time, allowing for stronger interactions. Notably, our technique works on any material, not just the piezoelectric materials that can be electrically controlled.\u201d<\/p>\n

\"Optical
QUANTUM LEAP?<\/strong>\u00a0\u201cIn the last 10 years, surface acoustic waves have emerged as a good resource for quantum applications because the phonon, or individual particle of sound, couples very well to different systems,\u201d says optics professor William Renninger<\/a>. (University of Rochester photo \/ J. Adam Fenster)\u00a0<\/figcaption><\/figure>\n

Renninger\u2019s team partnered with the lab of Associate Professor of Physics John Nichol<\/a> to make the surface acoustic wave devices described in the study. In addition to producing strong quantum coupling, the devices have the added benefits of simple fabrication, small size, and the ability to handle large amounts of power.<\/p>\n

Beyond applications in hybrid quantum computing, the team says their techniques can be used for spectroscopy to explore the property of materials, as sensors, and to study condensed matter physics.<\/p>\n

The research was supported through the National Science Foundation, the Defense Advanced Research Projects Agency, and the Office of Naval Research.<\/p>\n","protected":false},"excerpt":{"rendered":"

Researchers have developed new methods to couple light to sound waves that glide on surfaces.<\/p>\n","protected":false},"author":1242,"featured_media":605992,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[116],"tags":[18662,18632,18652,37092,17762,18572,16072,37472],"class_list":["post-605922","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sci-tech","tag-department-of-physics-and-astronomy","tag-hajim-school-of-engineering-and-applied-sciences","tag-institute-of-optics","tag-john-nichol","tag-quantum-science","tag-research-finding","tag-school-of-arts-and-sciences","tag-william-renninger"],"acf":[],"yoast_head":"\nNew surface acoustic wave techniques could lead to surfing a quantum internet<\/title>\n<meta name=\"description\" content=\"Researchers used surface acoustic waves to overcome a significant obstacle in the quest to 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