Deterministic teleportation of electrons in coupled quantum dots by stimulated Raman adiabatic passage

摘要

We propose a deterministic teleportation protocol of electrons in an array of three quantum-dotmolecules. The qubit operations are implemented by sequences of stimulated Raman adiabaticpassage (STIRAP) pulses. We show the significant efficiency of the protocol: only one c-NOTgate plus one Hadamard gate is required for the basis transformation, and one single-spin rotation for the reconstruction procedure. Picosecond-scale pulses allow for ultra-short totalduration of the protocol, which is far less than the lifetime of electron spin. After only —5% ofthe spin-decoherence time the teleportation process can be completed, which implies a highteleportation fidelity.