Hierarchical Quantum Logical Processor with Amortized Long-Range Connectivity
The Hierarchical Logical Processor (HLP) architecture was developed to create a fault-tolerant quantum computation that uses a layered approach combining CSS codes and the Rotated Surface Code. This design aims to improve encoding efficiency and reduce the need for costly long-range qubit couplings by using specialized 'shuttle buses' for parallel operations, leading to better performance bounds.