Quantum state transfer in quantum-dot spin chains

Electron spins in semiconductor quantum dots are a leading platform for quantum computing because they have extremely long coherence times and are compatible with advanced semiconductor manufacturing techniques. In recent years, large-scale arrays of electron spins in gate-defined quantum dots have emerged as key elements of spin-based quantum information processors. Electron spin qubits naturally interact with each other via nearest-neighbor exchange coupling. However, the ability to transmit quantum states over long distances is beneficial for fault-tolerant quantum computing. In this talk, we discuss the experimental realization of various ways to transfer spin states in quantum dots and how such methods of state transfer might be useful for quantum computing.