State Tomography of Layered Qubits via Spin Blockade Measurements on the Edge Qubit in a Spin Field‐Effect Transistor Structure Embedded with Quantum Dots Available to Purchase

As a promising physical realization of a quantum computer, we discuss a system with stacked quantum dots buried in adjacent to the channel of a spin field‐effect transistor. In this scheme, one can measure only the edge qubit (nearest to the channel) via the spin‐blockade measurement, but still it is possible to know the state of the whole qubits.