Researchers from the University of New South Wales in Sydney have increased the coherence time of qubits by 100 times.
In quantum computing, the more rotationsis kept in motion, the more likely it is that the information will be preserved during calculations, the scientists explain. When the spin qubits stop spinning, the calculation collapses and the values processed by each block are lost.
The researchers theoretically calculated that the coherence time could be increased by continuously rotating the qubits. Even a simple rotation allows you to increase the storage time of information up to 230 microseconds.
To make even more progress,researchers have developed a complex protocol for controlling qubits. Instead of just spinning the atoms in circles, the scientists rocked them from side to side like a metronome. If an individual electric field is additionally applied to each of these particles, this will take them out of resonance, but at the same time preserve the general rhythm of movement.
This technology significantly increases the coherence time, and also allows you to control multiple qubits simultaneously.
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