A π-shaped quantum device for implementation of Bell states in solid state environment

Abstract

I. ABSTRACTElectronic spin-qubit is key ingredient for quantum information processing in a solid state environment. We present a π-shaped two-qubit entanglement device capable of measuring the resultant states in Bell basis. In our device, source spins (↑s or ↓s) are electrically generated and tunnelled to channel where they interact with channel spins (↑c or ↓c) via exchange interaction which is responsible for 2-qubit entanglement. Electrical control over spins gives rise to the Bell states. The U √ SW APand CNOT gate operations are implemented through these Bell states for universal quantum computation. π-shaped quantum device can be used as a solid state interconnect between different parts of the circuit in integrated chips.