Group seminar at MPQ and Zoom: Optimised Partial Fault-Tolerance beyond Megaquop-Scale in Neutral Atoms
 

Stefano Veroni, University of Oxford, UK
Group seminar at MPQ lecture hall and Zoom
Tuesday, 14 July 2026, 5.00pm (CEST)

To reduce the large overhead of fully fault-tolerant (FT) universal computation, the framework of partial fault-tolerance has recently been proposed. While Clifford gates remain fully FT, arbitrary-angle rotations are natively implemented, rather than synthesised, at the expense of reduced resilience against specific hardware faults. While this architecture offers a potential orders-of-magnitude reduction in the cost of universal computation, its practicality depends on accurate noise modelling and hardware co-design.
Our work rigorously characterises and further optimises the protocol’s performance, with a focus on neutral atom architectures. We first improve the accuracy in the modelling of the protocol’s noise. Then we optimise physical gate implementations to address the scheme’s critical sensitivity to hardware faults. Finally, we assess its applicability and the required resources on a concrete task : time evolution of the Fermi-Hubbard model. Our results further validate the partially FT architecture for near term computation and open new prospects for its resilience and scalability.