This post was contributed to by Zia Mohammad, Scott Smart, Yuvraj Mohan, Mike Piech, and Rebecca Malamud
Figure 1: A Rigetti quantum processing unit (QPU) inside a dilution refrigerator. Photo by Drew Bird.
Amazon Braket enables customers to design and run quantum algorithms on a broad selection of quantum hardware through a unified interface. On April 7, 2026, we expanded the hardware available on Braket with the general availability of Rigetti Computing’s Cepheus-1-108Q, a 108-qubit superconducting quantum processing unit (QPU). Cepheus-1-108Q is the first gate-based quantum device with more than 100 qubits available on Amazon Braket. It replaces the Ankaa-3 system and represents the third generation of Rigetti hardware on the service.
The device is built using Rigetti’s proprietary multi-chip architecture that tiles twelve 9-qubit chiplets into a single processor. It is physically located in the United States and…