Japanese scientists confuse not two, but three qubits for the first time

Qubit entanglement is a process in which one qubit can simultaneously be given the same quantum

properties.A qubit has two ground states "0" and "1", but it can also be in states that are a superposition of these two ground states. This allows some operations to be carried out in a certain sense in parallel - that is, simultaneously with both “0” and “1”.

The authors of the new work conducted their experience onentanglement of qubits on a silicon structure using a composite structure of silicon and a compound of silicon and germanium. Each structure contained a qubit in the format of an ordinary electron. 

The authors controlled structures using gatesfrom aluminum, and the spin states of the electrons were changed due to the strong magnet on the crystal. As a result, the magnetic field, due to a drop in strength or gradient, separates the resonant frequencies of the three qubits: this is how we managed to address them separately.

If you entangle three qubits at once, you can speed up calculations in algorithms, as well as quickly correct errors in quantum systems. 

The authors of the new work note that the third qubitincreases the reliability of qubit calculations up to 88%. The authors promise to bring their development up to 50 and even 100 qubits in the future and present more advanced error correction mechanisms.

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