How ‘Qudits’ can promote quantum computing
“Qudits,” the multi-dimensional cousin of Qubits, can make quantum computer more efficient and less prone to error
The part of the quantum computer at the University of Insbrook, on which the researchers simultaneous using kutretes and quacents.
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Quantum computing involves calculating almost always almost always with cubits -quantum objects, which can take the value of ‘0’ or ‘1,’ like ordinary computer bits, but can also be in a range of combinations of 0 and 1. Now researchers are producing the first applications of ‘Quieties:’ units that offer a combination of three or more people.
In a paper published on 25 March Nature physicsPhysicists 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) In September, which reproduces the behavior of another quantum area, which uses strong nuclear force, kutretes.
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 who Pailed such simulation In 2016, with Qubetes at Insbrook University, Austria with colleagues. “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.
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“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 that used to encode a QBIT earlier – such as one Stuck ion Or one Photon-Can suddenly pack in more information, help the machines grow 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.
Tantra tweex
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. “Current quit processors such as IBM And Google Already can be operated as a hut, and a physicist at the University of Rochester, New York, says Machil Blok, “a modest twist will require a minor twice to operate as high-dimensional quadits.
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.
In the future, such simulations can help explain how to make quark protons together, or neutrino collide with each other in the intensive environment of a supernova explosion, says physicists. Martin Savez, a physicist at the University of Washington in Seattle, said, “There is a great hope that we are going to have new effects, which we can also identify with a nominal size quantum computers.”
error correction
In principle, any calculation that can be done with the Quality can also be performed with Qudits of any dimension, and vice versa: any Qudit can be encoded into a set of Qubits. But sharing information between many Qubits is notorious difficult and can introduce computational errors. Muskic says that the quantum algorithm on the quadits may require less steps, and therefore there is less possibility of introduction of errors.
Theorists have designed the ‘quantum error correction’ schemes to catch and fix the errors to spread information in maximum Qubits to reduce the error rate. In theory, Qudits can reduce that overhead and still produce the same level of error improvement, but experimentally, “is a complex list of trading bands”, Cambridge, a start-up quantum-software company in the UK, is called the vice-president of Quantum Science, the principle of Quantum Science, the theorist Earl Campbell. “It is a little difficult to create a code for Qudits.”
In a preprint posted last September, Brock and his colleagues encoded a Qudit as the energy level of the trapped microwave, and used some additional available dimensions to increase the excess of information and thus correct errors. “If we are going to be useful in a long period, we need to improve quantum error with quidits,” says Brock. “But he says that” this is less clear, at least at the moment, what will look like a large -scale quantum computer using quidits. “
This article is reproduced with permission and was first published On March 25, 2025,
