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quant-ph2026

Quantum Codes with Arbitrary Z-Rotation logical Gates and Applications to Fault-Tolerant Code Switching

Reza Dastbasteh, Ruben M. Otxoa, Pedro M. Crespo +1

A technique for realizing a universal set of fault-tolerant quantum operations is the code switching method, which leverages two quantum codes with complementary sets of transversa…

quant-ph2026

Hardware-Tailored Resource Estimation for Magic-State Distillation on Silicon Spin Qubits

Songqinghao Yang, Christopher K. Long, Rubén M. Otxoa +3

We present a resource analysis for generating high-fidelity logical magic states on silicon spin-qubit platforms. We consider a range of architectures, including a shuttling-based…

quant-ph2026

Surface-Code Thresholds and Qubit Footprints in Shuttling-Based Spin-Qubit Railways

Arun John Moncy, Reza Dastbasteh, Josu Etxezarreta Martinez +5

We present a fault-tolerant mapping of rotated surface codes onto a silicon spin-qubit railway architecture, utilizing electron shuttling to resolve the wiring fan-out…

quant-ph2026

Impact of leakage on the dynamics of a ST qubit implemented in a Double Quantum Dot device

Javier Oliva del Moral, Olatz Sanz Larrarte, Reza Dastbasteh +2

Spin qubits in quantum dots are a promising technology for quantum computing due to their fast response time and long coherence times. An electromagnetic pulse is applied to the sy…

quant-ph2025

Leveraging biased noise for more efficient quantum error correction at the circuit-level with two-level qubits

Josu Etxezarreta Martinez, Paul Schnabl, Javier Oliva del Moral +3

Tailoring quantum error correction codes (QECC) to biased noise has demonstrated significant benefits. However, most of the prior research on this topic has focused on code capacit…

quant-ph2025

SpinHex: A low-crosstalk, spin-qubit architecture based on multi-electron couplers

Rubén M. Otxoa, Josu Etxezarreta Martinez, Paul Schnabl +3

Semiconductor spin qubits are an attractive quantum computing platform that offers long qubit coherence times and compatibility with existing semiconductor fabrication technology f…