The part of the quantum computer at the University of Insbrook, on which the researchers simultaneous using kutretes and quacents. Credit: c. Locner/University of Insbrook
Quantum computing involves calculating almost always with cubits – quantum objects that can take value ‘0’ or ‘1’ like ordinary computer bits, but it can also be in a range of combination of 0 and 1. Now researchers are producing the first applications of ‘Quits’: units of information that offer a combination of three or more similar states.
In a paper published on 25 March Nature physics1Physicists describe how they used ‘Kutrete’ and ‘Ququints’ respectively-Qudits with three and five states-to simulate how high-energy quantum particles interact through an electromagnetic field. Follows the result published in the work Physical review paper (PRL) on September2 This reproduced the behavior of another quantum area, which is using strong nuclear force, Qutrits.
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Such simulation of quantum regions is seen as one of the most promising applications of quantum computers, as these machines can predict events in particles colloiders or chemical reactions that are beyond the capabilities of common computers to calculate. Qudits are naturally compatible with this task, the theoretical physicist Christine Musk, says co-writer Nature physics Paper that pioneered such simulation with quarters in 20163 Inserts with colleagues at Insbrook University, Austria. “If I can go back on time in my old self, I will tell him: Why waste the time with the Quebits?” Muskik says, which is now at Waterloo University, Canada.
“This Qudit approach is not a solution to everything, but it helps you when it is suitable for the problem,” says Martin Ringbire, the lead author of The University of Insbrook and the paper.
More generally, Qudits can help calculate on a quantum computer more efficient and less error-prone, at least on paper. With Qudits, each computational unit earlier encoded a QIBIT – such as a trapped ion or a photon – can pack in sudden more information, which helps to score the machines faster. But the strategy is less mature than the approach depending on the qualities, and the devil may be in detail. “Quits are also more complicated to work,” says Benjamin Brock, an experimental physicist at Yale University in New Heaven, Connecticut.
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In most types of quantum computers, the Qualbits using researchers are two potential states of a system that will naturally be several more states. This type of system can be hosting Qudits. “Existing quit processors such as IBM and Google people can already be operated as kutretes, and will require minor tweaks to operate as high-dimensional quadits,” RuChetter, New York University’s physicist McAil Bloques. (Blok and his team have experimented in their laboratory in which superconductors have encoded quits up to 12 levels.4,
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For his quantum-field simulation, author of PRL The paper encoded Qutrits on a superconducting quantum chip that provides IBM researchers, and it is usually used as a quit machine. Ringbair, Muskick and his colleagues used excited states of calcium ions to represent their five-level quints. A ququint is a natural way of representing an area that can be in the lowest energy position (with value 0) or can be positive or negative value from +2 to +2 at any point in space, says smiles.
