Two-qubit logic between distant spins in silicon

Understand

Direct interactions between quantum particles naturally fall off with distance.

• For future-proof qubit architectures, however, it is important to avail of interaction mechanisms on different length scales.
• In this work, we utilize a superconducting resonator to facilitate a coherent interaction between two semiconductor spin qubits 250 $\mu$m apart.
• This separation is several orders of magnitude larger than for the commonly employed direct interaction mechanisms in this platform.