Problems that defy traditional computing can be solved by quantum solutions.
Category: quantum physics
Scientists have used cutting-edge research in quantum computation and quantum technology to pioneer a radical new approach to determining how our Universe works at its most fundamental level.
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An especially counter-intuitive feature of quantum mechanics is that a single event can exist in a state of superposition — happening both here and there, or both today and tomorrow.
Such superpositions are hard to create, as they are destroyed if any kind of information about the place and time of the event leaks into the surrounding — and even if nobody actually records this information. But when superpositions do occur, they lead to observations that are very different from that of classical physics, questioning down to our very understanding of space and time.
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By Amir Ebrahimi — Principal Software Engineer · Unity Technologies
What opened quantum computing up for me was realizing that it’s even more connected to our physical universe than classical computing is.
I’m at Unity, where I have a day job developing software for Barracuda, our CPU/GPU optimized inference engine for neural networks. I’ve been working in the video game industry since 2003, which is usually on the cutting edge of technology, so it’s surprising that I had never heard about quantum computing until about three years ago — I don’t know if I was ignoring it or if I simply wasn’t exposed to it. Back in 2018, one of my coworkers who was already interested in quantum computing shared a few links to the IBM Quantum Experience, and explained that you could use a quantum computer online. I took a look and bookmarked it, but didn’t actually try it out.
Aalto researchers have used an IBM quantum computer to explore an overlooked area of physics, and have challenged 100-year-old notions about information at the quantum level.
IBM announced that global energy company BP has joined the tech giant’s quantum network as an industry partner to boost the use of quantum computing in the energy industry.
Researchers unlocked the electronic properties of graphene by folding the material like origami paper.
Researchers have found a way to use light and a single electron to communicate with a cloud of quantum bits and sense their behavior, making it possible to detect a single quantum bit in a dense cloud.
The researchers, from the University of Cambridge, were able to inject a ‘needle’ of highly fragile quantum information in a ‘haystack’ of 100000 nuclei. Using lasers to control an electron, the researchers could then use that electron to control the behavior of the haystack, making it easier to find the needle. They were able to detect the ‘needle’ with a precision of 1.9 parts per million: high enough to detect a single quantum bit in this large ensemble.
The technique makes it possible to send highly fragile quantum information optically to a nuclear system for storage, and to verify its imprint with minimal disturbance, an important step in the development of a quantum internet based on quantum light sources. The results are reported in the journal Nature Physics.
Simulation of non-Hermitian quantum mechanics using a quantum computer goes beyond centuries-old conventions. Aalto researchers have used an IBM quantum computer to explore an overlooked area of physics, and have challenged 100-year-old cherished notions about information at the quantum level.
Electrons in materials have a property known as ‘spin’, which is responsible for a variety of properties, the most well-known of which is magnetism. Permanent magnets, like the ones used for refrigerator doors, have all the spins in their electrons aligned in the same direction. Scientists refer to this behavior as ferromagnetism, and the research field of trying to manipulate spin as spintronics.
Down in the quantum world, spins can arrange in more exotic ways, giving rise to frustrated states and entangled magnets. Interestingly, a property similar to spin, known as “the valley,” appears in graphene materials. This unique feature has given rise to the field of valleytronics, which aims to exploit the valley property for emergent physics and information processing, very much like spintronics relies on pure spin physics.