Towards transistor-based quantum computing

TL;DR

This paper introduces a novel quantum computing architecture using teleportation-based transistors called "telesistors" that leverage symmetry-protected topological order for noise suppression and high-fidelity gates.

Contribution

It proposes a universal quantum computing architecture based on topologically protected quantum transistors, enabling fault-tolerance with low overhead.

Findings

Telesistors are ground states of systems with symmetry-protected topological order.

They suppress certain noises and enable high-fidelity Clifford gates without active error correction.

The architecture is feasible with current technology and offers advantages in modularity and integration.

Abstract

In this work, we propose and study in depth a universal quantum computing architecture based on a quantum construction of transistors. Our teleportation-based quantum transistors, called ``telesistors'', are ground states of systems with symmetry-protected topological order, hence suppress certain noises and provide high-fidelity Clifford gates without the need for active error correction. This physical protection, quantified by the string order parameters, serves as a low-overhead foundation upon which conventional fault-tolerant encoding (e.g., with stabilizer codes) can be built to achieve universal quantum computation. This architecture shows rich connections with current known architectures, and some desirable merits especially compared with the qubit-based circuits regarding modularity, integration, and program storage. Our study shows that it is plausible to realize it with current technology in the near future.