Towards transistor-based quantum computing
For quantum computing researchers, this work introduces a potentially low-overhead architecture that could simplify fault-tolerant quantum computation, but the claims are largely theoretical and lack concrete experimental validation.
This work proposes a universal quantum computing architecture based on quantum transistors (telesistors) that use symmetry-protected topological order to suppress noise and provide high-fidelity Clifford gates without active error correction. The architecture offers advantages in modularity, integration, and program storage, and is claimed to be realizable with current technology.
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.