Yet more qubit tech: New quantum dot options, diamond vacancies
Summary
Ars Technica surveys recent advances in quantum hardware, highlighting HRL Laboratories' quantum dot qubits with three coupled dots and a low-power controller, IBM’s potential integration with silicon-based architectures, Delft’s moving-spin bus approach, and Saxon Q’s room-temperature diamond NV-center modules. The piece frames these developments as complementary paths toward scalable quantum computing, each with distinct trade-offs in manufacturability, speed, and error correction. It emphasizes ongoing challenges in qubit connectivity and error rates as the field competes to scale.