[{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\u003Cdiv id=\u0022republish_modal_form\u0022\u003E\u003Cform class=\u0022modal-form-example-modal-form ecl-form\u0022 data-drupal-selector=\u0022modal-form-example-modal-form\u0022 action=\u0022\/en\/article\/modal\/7069\u0022 method=\u0022post\u0022 id=\u0022modal-form-example-modal-form\u0022 accept-charset=\u0022UTF-8\u0022\u003E\u003Cp\u003EHorizon articles can be republished for free under the Creative Commons Attribution 4.0 International (CC BY 4.0) licence.\u003C\/p\u003E\n \u003Cp\u003EYou must give appropriate credit. We ask you to do this by:\u003Cbr \/\u003E\n 1) Using the original journalist\u0027s byline\u003Cbr \/\u003E\n 2) Linking back to our original story\u003Cbr \/\u003E\n 3) Using the following text in the footer: This article was originally published in \u003Ca href=\u0027#\u0027\u003EHorizon, the EU Research and Innovation magazine\u003C\/a\u003E\u003C\/p\u003E\n \u003Cp\u003ESee our full republication guidelines \u003Ca href=\u0027\/horizon-magazine\/republish-our-stories\u0027\u003Ehere\u003C\/a\u003E\u003C\/p\u003E\n \u003Cp\u003EHTML for this article, including the attribution and page view counter, is below:\u003C\/p\u003E\u003Cdiv class=\u0022js-form-item form-item js-form-type-textarea form-item-body-content js-form-item-body-content ecl-form-group ecl-form-group--text-area form-no-label ecl-u-mv-m\u0022\u003E\n \n\u003Cdiv\u003E\n \u003Ctextarea data-drupal-selector=\u0022edit-body-content\u0022 aria-describedby=\u0022edit-body-content--description\u0022 id=\u0022edit-body-content\u0022 name=\u0022body_content\u0022 rows=\u00225\u0022 cols=\u002260\u0022 class=\u0022form-textarea ecl-text-area\u0022\u003E\u003Ch2\u003E\u2018Quantum computers will soon outperform classical machines\u2019\u003C\/h2\u003E\u003Cp\u003E\u003Cstrong\u003EHe is leading a project to develop a fully scalable quantum computer. The project is part of the EU\u2019s \u20ac1 billion, 10-year \u003C\/strong\u003E\u003Ca href=\u0022https:\/\/qt.eu\/about\/\u0022 target=\u0022_blank\u0022 rel=\u0022noopener noreferrer\u0022\u003E\u003Cstrong\u003EQuantum Flagship\u003C\/strong\u003E\u003C\/a\u003E\u003Cstrong\u003E initiative to kickstart a competitive European industry in quantum technologies.\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWhat is a quantum computer and how does it differ from classical computers?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018The big difference compared to a classical computer is that a quantum computer is following a different rule set. It\u2019s not using zeros and ones like classical computers are \u2013 bits and bytes \u2013 but it is actually able to work with something called qubits.\u003C\/p\u003E\u003Cp\u003E\u2018Qubits are quantum bits, and have the special property that at the same time they can be zero and one. The classical computer can only be \u2013 like a light switch \u2013 either on or off, and the quantum bits can be on and off at the same time.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWhat\u2019s the effect of that?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018This superposition essentially allows it to do things that a classical computer can\u2019t do. Because it\u2019s in many states at the same time, in simplified terms, it allows you to probe many possibilities at the same time. (For example), if you are working in finance and you want to say which portfolio has the largest profit, you need to take many, many different cases into account and then find the best one. And this is something that a quantum computer, because it essentially allows you to calculate many things at the same time, is notably more suitable for.\u003C\/p\u003E\u003Cp\u003E\u2018(Another) prominent example is energy material design. Think about the power line you get at home. \u0026nbsp;You have friction \u2013 ohmic resistance \u2013 in the cable. That\u2019s why an electric motor or your hairdryer gets warm. Quite a bit of a power is lost from the power plant before it gets to your house. Can we come up with a new material, which doesn\u2019t have ohmic resistance, so we don\u2019t have (energy) losses in the cable? The inherent properties of how friction in materials work, that\u2019s partially governed by quantum mechanics. And a quantum computer (finds it) easy to follow the rules of quantum.\u003C\/p\u003E\u003Cp\u003E\u2018It allows you to do material design and check what are good candidates for materials that wouldn\u2019t have, say, ohmic resistance, and suddenly we save a couple of percent on global energy loss from the power plants to the consumer.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cblockquote class=\u0022tw-text-center tw-text-blue tw-font-bold tw-text-2xl lg:tw-w-1\/2 tw-border-2 tw-border-blue tw-p-12 tw-my-8 lg:tw-m-12 lg:tw--ml-16 tw-float-left\u0022\u003E\n \u003Cspan class=\u0022tw-text-5xl tw-rotate-180\u0022\u003E\u201c\u003C\/span\u003E\n \u003Cp class=\u0022tw-font-serif tw-italic\u0022\u003E\u0026#039;All of quantum physics was developed 100 years ago in Europe. This is something that we excel at.\u0026#039;\u003C\/p\u003E\n \u003Cfooter\u003E\n \u003Ccite class=\u0022tw-not-italic tw-font-normal tw-text-sm tw-text-black\u0022\u003EDr Thomas Monz, University of Innsbruck, Austria\u003C\/cite\u003E\n \u003C\/footer\u003E\n\u003C\/blockquote\u003E\n\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWhere are we now in the development of quantum computers?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018There are currently several proof of concept implementations. (For example) companies are working in the finance area on portfolio optimisation. Certain companies are working towards chemistry \u2013 one prominent example is how to generate fertiliser.\u003C\/p\u003E\u003Cp\u003E\u2018(But) I think the key question is, regardless of what quantum computer we actually talk about, give me one case where it will outperform the best classical computer worldwide.\u003C\/p\u003E\u003Cp\u003E\u2018And the timescale on that, I would guess it\u2019s in the order of another year.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EOne of the big challenges is going to be writing algorithms to program quantum computers. Where are we with that?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018There are a couple of (algorithms) already, but obviously you want to have more.\u003C\/p\u003E\u003Cp\u003E\u2018Everything started with Shor\u2019s algorithm (which can find the factors of prime numbers on which today\u2019s encryption systems are based). This was an algorithm that could convince (government) agencies to look into quantum computing, because it can break some of the most prominent encryption methods that we currently use. That was the starting point about two decades ago.\u003C\/p\u003E\u003Cp\u003E\u2018In the meantime, people have been working on (algorithms for) optimisation calculations. If you want to optimise a (financial) portfolio or make sure no-one gets stuck in a traffic jam \u2013 mathematically they are all very similar.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWill our use of quantum computers depend on the algorithms that we\u2019re able to develop? \u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018Sure. Think about your smartphone. Your smartphone is a computer and depending on which app you load, it can be something where you send out a message or you hear some music. A quantum computer is also fully programmable. The more algorithms we have, the more apps we can build with those algorithms, and then you want to have your quantum app store.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cfigure role=\u0022group\u0022 class=\u0022@alignleft@\u0022\u003E\n\u003Cimg alt=\u0022As a quantum computer can be in many states at the time it enables the calculation of many possibilities at once, says Dr Thomas Monz. Image credit - National Institute of Standards and Technology, image is in the public domain\u0022 height=\u00221080\u0022 src=\u0022\/research-and-innovation\/sites\/default\/files\/hm\/IMCEUpload\/Quantum_Computing%3B_Ion_Trapping.jpg\u0022 title=\u0022As a quantum computer can be in many states at the time it enables the calculation of many possibilities at once, says Dr Thomas Monz. Image credit - National Institute of Standards and Technology, image is in the public domain\u0022 width=\u00221582\u0022\u003E\n\u003Cfigcaption class=\u0022tw-italic tw-mb-4\u0022\u003EAs a quantum computer can be in many states at the time it enables the calculation of many possibilities at once, says Dr Thomas Monz. Image credit - National Institute of Standards and Technology, image is in the public domain\u003C\/figcaption\u003E\n\u003C\/figure\u003E\n\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EIs it fair to say that we won\u2019t have quantum computers at home in the future because they\u2019re something very specialised?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018Partially. Say there is a quantum computer available right now, would you buy one? If you say, \u201cI mainly write emails, watch videos and store my pictures,\u201d you wouldn\u2019t need a quantum computer \u2013 not for the moment.\u003C\/p\u003E\u003Cp\u003E\u2018(But) think about your classic computer. For graphics, it has a graphics card. It\u2019s likely there will be a quantum co-processor in the long-run. It will be an add-on to your classical computer to give you some additional capabilities for special computing (or something such as secure communication).\u003C\/p\u003E\u003Cp\u003E\u2018(Or) it could be that there are quantum computers available and you can have access to them via a simple cloud interface.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EYou run a project called \u003C\/strong\u003E\u003Ca href=\u0022https:\/\/cordis.europa.eu\/project\/rcn\/218553\/factsheet\/en\u0022 target=\u0022_blank\u0022 rel=\u0022noopener noreferrer\u0022\u003E\u003Cstrong\u003EAQTION\u003C\/strong\u003E\u003C\/a\u003E\u003Cstrong\u003E, which is trying to build a quantum computer. Can you tell us a bit about it?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018IBM, Intel and Google are building on solid-state semiconductors (used to make computer chips) whereas we are using single atoms. In solid-state systems, you start with a lump of material and try to control it so it becomes quantum. Our approach is the opposite. We start with an atom, which is already quantum, and look at how to control it. We already have the quantum properties, so we only \u2013 only in quotation marks \u2013 have to focus on the classical (engineering) part of it.\u003C\/p\u003E\u003Cp\u003E\u2018Another aspect is that most of these (solid-state) computers are built in a lab environment. (Our quantum computer) is meant to operate in an office environment. If the air conditioning breaks, it still ought to work. If you want to ship it to a partner, you disassemble it, put the boxes into wooden crates, you ship that, you assemble it, and it ought to work. Rather than this once-in-a-lifetime prototype that only exists in one lab.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ESo the question is still open about the best way to build a quantum computer?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018Yes. I would argue there are probably five or six approaches. The two most promising for the moment are trapped ions \u2013 that is what we pursue \u2013 and superconducting systems.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWe always hear about the private companies that are driving forward quantum computing. What effect will the EU\u2019s \u003C\/strong\u003E\u003Ca href=\u0022https:\/\/qt.eu\u0022 target=\u0022_blank\u0022 rel=\u0022noopener noreferrer\u0022\u003E\u003Cstrong\u003EQuantum Flagship\u003C\/strong\u003E\u003C\/a\u003E\u003Cstrong\u003E have?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018Intel, IBM, Google all pursue a technology (to build quantum computers) that\u2019s close to their hearts. If you have a hammer, everything looks like a nail; if you are in the semiconductor industry you want to address every new potential application with semiconductor technology. That\u2019s what they do.\u003C\/p\u003E\u003Cp\u003E\u2018I think what the funding from the EU allows us to do is to compete with these entities because there are not that many companies in Europe (pursuing quantum technologies). The second part is, maybe you want to have a different tool using a new technology (not just semiconductors). So if one technology might be a dead end in the long run, we have in Europe a plan B and a plan C because we don\u2019t put everything into one bucket.\u003C\/p\u003E\u003Cp\u003E\u2018The Flagship is looking not only at computing, but also clocks, sensors, communications. It has a long-term vision of quantum computing as well.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWhere does Europe stand in the global race on quantum technologies?\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u2018Think about Schr\u00f6dinger, Einstein \u2013 all of quantum physics was developed 100 years ago in Europe. This is something that we excel at. We have invested in fundamental research for essentially the last 100 years, and now that there is the chance of turning research into technology and applications, we shouldn\u2019t miss that train. We have a very good chance of making that work.\u2019\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EThe research in this article is funded by the EU. If you liked this article, please consider sharing it on social media.\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EThis interview has been edited for clarity and length.\u003C\/em\u003E\u003C\/p\u003E\u003C\/textarea\u003E\n\u003C\/div\u003E\n\n \u003Cdiv id=\u0022edit-body-content--description\u0022 class=\u0022ecl-help-block description\u0022\u003E\n Please copy the above code and embed it onto your website to republish.\n \u003C\/div\u003E\n \u003C\/div\u003E\n\u003Cinput autocomplete=\u0022off\u0022 data-drupal-selector=\u0022form-wm5idkzcxqrfv3wvjvnvctmxzpkrcxch4ahdmt5dxqo\u0022 type=\u0022hidden\u0022 name=\u0022form_build_id\u0022 value=\u0022form-WM5idKZCXqRFv3WvJVNVCTmXzpKRcxCh4AHdMT5dxqo\u0022 \/\u003E\n\u003Cinput data-drupal-selector=\u0022edit-modal-form-example-modal-form\u0022 type=\u0022hidden\u0022 name=\u0022form_id\u0022 value=\u0022modal_form_example_modal_form\u0022 \/\u003E\n\u003C\/form\u003E\n\u003C\/div\u003E","dialogOptions":{"width":"800","modal":true,"title":"Republish this content"}}]