Scientists create magic fermionic quantum processor

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Quantum computers are cutting-edge machines that can solve problems much faster than regular computers.

Now, a team of scientists from Austria and the U.S. have taken this technology to a new level by creating a unique type of quantum computer.

This new kind uses special atoms, called fermionic atoms, to simulate complex systems like molecules and particles.

The exciting findings were published in the scientific journal Proceedings of the National Academy of Sciences.

What makes these atoms special?

Fermionic atoms are unique because they follow a rule called the Pauli exclusion principle. This rule says that no two of these atoms can be in the same state at the same time.

This is different from regular atoms, and it’s what makes them perfect for simulating certain systems.

They can be used to understand things like molecules in chemistry or particles in physics.

Why is this new quantum computer important?

Traditional quantum computers use something called qubits to perform calculations. But to simulate complex systems like molecules, they need extra resources.

This usually means adding more qubits or making the computer’s “circuits” longer, making things more complicated and less efficient.

The new quantum computer designed by the team led by Peter Zoller doesn’t need these extra steps. It uses fermionic atoms directly to encode and process the information, making it more efficient and better suited for these complicated tasks.

How does it work?

In simple terms, this new type of quantum computer uses a “register” made up of these special atoms. The register can be thought of as a row of boxes, where each box can either be empty or contain one fermionic atom. These boxes then hold the data for the system you’re trying to simulate, like a molecule.

To process this information, the computer uses a special “circuit” made up of two types of “gates” (think of them as tiny operation rooms where calculations happen). These gates are tuned perfectly for these fermionic atoms, making the simulation more accurate.

The team proposes to use “optical tweezers” — intensely focused laser beams — to move and control the atoms with high precision. This allows them to implement these special gates effectively.

What can it be used for?

This new approach has a wide range of applications. For example, it can help scientists understand how molecules interact in chemistry or how particles behave inside a proton in physics. This is a big deal because these are difficult problems that traditional computers struggle to solve.

By using these special atoms, the team can simulate these systems directly. This is faster and more efficient than using a traditional quantum computer, which would need additional steps and resources to get the same results.

What’s next?

Daniel Gonzalez Cuadra, a researcher from the team, is excited about the possibilities. He wants to continue contributing to this field by finding even more applications and creating algorithms (a set of rules or operations) specifically designed for this new type of quantum computer.

In summary, this development is a big leap forward in the field of quantum computing. It opens up new avenues for understanding complex systems in ways that were not possible before, making it a groundbreaking discovery in the world of science.

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Source: University of Innsbruck.