The path to quantum success is full of fairytale challenges how do you lift the cloud without changing its shape? The possible solution seems to be fantastic with the problem. You can make a great performance out of a unique material called a time crystal to dance while traveling in the clouds.
Krzysztof Jiergiel and Krzysztof Sacha of Poland’s Jagiellonian University and Peter Hannaford of Swinburne University of Technology in Australia were able to show that the new time loop protects qubits as they pass through them. quantum logic.
In contrast to the precise description of the position and motion of an object, it describes the quantum properties of the particle, such as its shape, position, speed, and spin, as a probabilistic mess.
This “cloud” of possibilities is best understood in isolation. After the particle interacts with the environment, the probability distribution varies, like the difference between the runners in the 100-meter dash at the Olympics, until it finally settles on only one result.
Just as a standard computer can use the binary state of a particle as an “off” switch in a logic gate, a quantum computer could theoretically use the propagation of uncertainty in particles to quickly solve its algorithms, many of which do not work. or cannot be solved by old methods.
The challenge is to preserve the coherence of quantum clouds, known as qubits, for as long as possible. With each jump, each electromagnetic wind causes an increase in error that disrupts the number crunching process.
Practical quantum computers require hundreds of thousands of qubits to remain unchanged for long periods, making full-scale systems a major challenge.
Researchers have explored ways to make quantum computing more secure, or by locking individual qubits to build a security network around them.
Now, physicists Jiergiel, Sacha and Hannaford have described a new approach that turns a quantum computer into a symphony of qubits driven by strange conducting rods.
Time crystals are materials that change in a repeating pattern over time. Considered only a decade ago as a curiosity, this version of the “signal” system was developed using the soft end of an ultra-cold laser cluster, where multiple light beams send particles into periodic oscillations that disrupt the laser’s timing.
In a paper available on the arXiv preview server, a trio of physicists proposed using the unique periodicity of time crystals as the basis for a new “time-tronics” circuit. This periodicity, used to guide gentle waves of several information qubits, can help reduce random collisions that cause so many errors.
Such a temporal chain of constantly shifting qubits would make it easier for computers to steer any particle down another path, harnessing its quantum capabilities in a beneficial way rather than a mistake.
Although the proposal remains only theoretical, the team has shown how the physics of potassium ion clusters can be cooled to absolute temperature, and guidance from laser pulses can provide an “orchestra” for qubits to waltz.
Translating ideas into practical, full-scale quantum computers, if they work at all, will require years of innovation and experimentation. However, if we at least knew that some form of time crystals existed and could be used for practical purposes, the problem of cloud lifting might not be a fairy tale quest.
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