Jan 27, 2023

Study achieves the coherent manipulation of electron spins in silicon

Posted by in categories: computing, quantum physics

In recent years, many physicists and computer scientists have been working on the development of quantum computing technologies. These technologies are based on qubits, the basic units of quantum information.

In contrast with classical bits, which have a value of 0 or 1, qubits can exist in , so they can have a value of 0 and 1 simultaneously. Qubits can be made of different physical systems, including , (i.e., the spin state of a nucleus), photons, and superconducting circuits.

Electron spins confined in quantum dots (i.e., tiny silicon-based structures) have shown particular promise as qubits, particularly due to their long coherence times, high gate fidelities and compatibility with existing semiconductor manufacturing methods. Coherently controlling multiple , however, can be challenging.

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