Scalable Multi-Chip Quantum Architectures Enabled By Cryogenic Wireless / Quantum -Coherent Network-In Package

Noisy intermediate-scale quantum computers are currently the most powerful quantum computers. Although they are not fault-tolerant, they have proved to be far more efficient than today’s more advanced supercomputers. However, fully error-corrected quantum computers would require millions of qubits to address real-world problems. The EIC-funded QUADRATURE project will rise to the million-qubit challenge by pioneering a new generation of quantum computing architectures. Rather than individually wiring and connecting millions of individual qubits, QUADRATURE will develop scalable architectures by connecting distributed quantum cores. These cores will be connected via quantum-coherent qubit state transfer links and wireless interconnects. The network components will be functioning under cryogenic temperatures. The proposed architecture supports reconfigurability, addressing a massive number of heterogeneous quantum algorithmic requirements.