Coherent transfer of quantum information in silicon using resonant SWAP gates

Understand

Solid state quantum processors based on spins in silicon quantum dots are emerging as a powerful platform for quantum information processing.

• High fidelity single- and two-qubit gates have recently been demonstrated and large extendable qubit arrays are now routinely fabricated.
• However, two-qubit gates are mediated through nearest-neighbor exchange interactions, which require direct wavefunction overlap.
• This limits the overall connectivity of these devices and is a major hurdle to realizing error correction, quantum random access memory, and multi-qubit quantum algorithms.