{"id":7250,"date":"2020-09-30T16:00:14","date_gmt":"2020-09-30T15:00:14","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=7250"},"modified":"2024-09-04T20:09:30","modified_gmt":"2024-09-04T19:09:30","slug":"new-bolometer-to-further-the-application-for-quantum-computers","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/new-bolometer-to-further-the-application-for-quantum-computers\/7250\/","title":{"rendered":"New bolometer to further the application for quantum computers"},"content":{"rendered":"<h2>A team of researchers has created a new bolometer for measuring energy quanta at an unprecedented resolution, potentially bringing quantum computing out of the laboratory and into real-world applications.<\/h2>\n<p>The project, led by <a href=\"https:\/\/www.aalto.fi\/en\" target=\"_blank\" rel=\"noopener noreferrer\">Aalto University<\/a> and <a href=\"https:\/\/www.vttresearch.com\/en\" target=\"_blank\" rel=\"noopener noreferrer\">VTT Technical Research Centre of Finland<\/a>, aims to improve upon standard bolometers, which measure the energy quanta of incoming radiation by measuring how much it heats up the detector.<\/p>\n<p>Professor Mikko M\u00f6tt\u00f6nen&#8217;s Quantum Computing and Devices group at Aalto University has been studying bolometers for quantum computing over the past decade and has now developed a device that can match current state-of-the-art detectors used in quantum computers.<\/p>\n<p>Most quantum computers determine a qubit&#8217;s energy state by measuring the voltage induced by the qubit. However, there are three problems with voltage measurements: firstly, measuring the voltage requires extensive amplification circuitry, which may limit the scalability of the <a href=\"https:\/\/www.innovationnewsnetwork.com\/scientists-propose-new-innovative-2d-design-for-quantum-computers\/4922\/\">quantum computer<\/a>; secondly, this circuitry consumes a lot of power; and thirdly, the voltage measurements carry quantum noise which introduces errors in the qubit readout.<\/p>\n<p>Researchers hope that by using bolometers to measure qubit energy, they can overcome these complications. M\u00f6tt\u00f6nen said: \u201cBolometers are now entering the field of quantum technology and perhaps their first application could be in reading out the quantum information from qubits.\u201d<\/p>\n<p>In order to make these bolometers out of graphene, the team collaborated with Professor Pertti Hakonen&#8217;s NANO group, who have expertise in fabricating <a href=\"https:\/\/www.innovationnewsnetwork.com\/bringing-graphene-to-the-european-market-with-graphene-flagship\/5515\/\">graphene-based devices<\/a>. Graphene has a very low heat capacity, which means that it is possible to quickly detect very small changes in its energy. By using graphene to create bolometers, the researchers have produced a device that can make measurements in well below a microsecond, as fast as the technology currently used to measure qubits.<\/p>\n<p>Hakonen said: \u201cChanging to graphene increased the detector speed by 100 times, while the noise level remained the same. After these initial results, there is still a lot of optimisation we can do to make the device even better.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A team of researchers has created a new bolometer for measuring energy quanta at an unprecedented resolution, potentially bringing quantum computing out of the laboratory and into real-world applications. The project, led by Aalto University and VTT Technical Research Centre of Finland, aims to improve upon standard bolometers, which measure the energy quanta of incoming [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":7251,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[24615],"tags":[24128,793],"acf":[],"yoast_head":"\n<title>New bolometer to further the application for quantum computers<\/title>\n<meta name=\"description\" content=\"Researchers have created a bolometer for measuring energy quanta, potentially bringing quantum computing into real-world applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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