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quant-ph2026

Multiqubit Rydberg Gates for Quantum Error Correction

David F. Locher, Josias Old, Katharina Brechtelsbauer +4

Multiqubit gates that involve three or more qubits are usually thought to be of little significance for fault-tolerant quantum error correction because single gate faults can lead…

quant-ph2026

Analog-Digital Quantum Computing with Quantum Annealing Processors

Rahul Deshpande, Majid Kheirkhah, Chris Rich +12

Quantum annealing processors typically control qubits in unison, attenuating quantum fluctuations uniformly until the applied system Hamiltonian is diagonal in the computational ba…

quant-ph2025

Decoding 3D color codes with boundaries

Friederike Butt, Lars Esser, Markus Müller

Practical large-scale quantum computation requires both efficient error correction and robust implementation of logical operations. Three-dimensional (3D) color codes are a promisi…

quant-ph2025

Strong electron-electron interactions in a dilute weakly-localized metal near a metal-to-insulator transition

Nicolò D'Anna, Jamie Bragg, Aidan G. McConnell +12

Because it is easily switched from insulator to metal either via chemical doping or electrical gating, silicon is at the core of modern information technology and remains a candida…

quant-ph2025

Measurement-free quantum error correction optimized for biased noise

Katharina Brechtelsbauer, Friederike Butt, David F. Locher +4

In this paper, we derive optimized measurement-free protocols for quantum error correction and the implementation of a universal gate set optimized for an error model that is noise…

quant-ph2025

Demonstration of two-dimensional connectivity for a scalable error-corrected ion-trap quantum processor architecture

Marco Valentini, Martin W. van Mourik, Friederike Butt +12

A major hurdle for building a large-scale quantum computer is increasing the number of qubits while maintaining connectivity between them. In trapped-ion devices, this connectivity…