Electrically switchable qubit can tune between storage and fast calculation modes

Science Daily  January 11, 2021
An international team of researchers (Switzerland, the Netherland) has created the qubits in the form of “hole spins” that can be switched from a stable idle mode to a fast calculation mode. The spins can be selectively coupled — via a photon, for example — to other spins by tuning their resonant frequencies. They can be coherently flipped from up to down in as little as a nanosecond allowing up to a billion switches per second. For their experiments, the researchers used a semiconductor nanowire made of silicon and germanium wire that has a diameter of about 20 nanometers. As the qubit is extremely small, it should in principle be possible to incorporate millions or even billions of these qubits onto a chip…read more. TECHNICAL ARTICLE

Experimental set-up and EDSR. Credit: Nature Nanotechnology (2021)

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