Constructing qubits with topoconductors
The topoconductor differs from commonplace superconductors in the best way it hosts qubits. Like commonplace superconductors, the topoconductor gives a zero-resistance path for Cooper pairs of electrons. In contrast to commonplace superconductors, the topoconductor permits an unpaired electron to exist. That is how the topoconductor units its quantum state and the way that state is measured. With an unpaired electron, the topoconductor has a cost (and completely different superposition states could have completely different fees). On the identical time, there’s no strategy to entice that electron, because it’s all over the place within the topoconductor on the identical time.
The one qubit constructing block is known as a tetron. It has two superconducting topological wires that host 4 Majorana Zero Modes (MZM) at every finish. The wires are linked by a thinner superconductor. Along with the wire, these 4 MZMs management and retailer the state of the qubit. The topological wire is coupled to a pair of quantum dots, which have a special cost relying on the state of the qubit.
This cost is what the microwave detectors measure. The method is extraordinarily correct, with a particularly low likelihood of error. Nevertheless, the extraordinarily low likelihood of error nonetheless isn’t low sufficient, and there must be higher error correction for Microsoft to ship a working quantum pc. For this reason the system highway map goes as much as multi-tetron units that present solely a handful of qubits. Regardless of this, Majorana 1-based units will want solely one-tenth of the error-correction {hardware} of comparable quantum computer systems.
