Quantum Optics Digest

New arXiv papers ranked each weekday morning against a written interest statement.

Ttheory   Eexperiment   TEboth   score ≥80 highlighted   Zotero…

Superconducting quantum computing, weekly

Week ending Saturday 12 September 2026

1. 91TEResilience Beyond the Light Cone: Error-Detected Primitives for Practical Dynamic Circuits
   Kevin C. Smith, Bibek Pokharel, Satvik Maurya et al. · 2026-09-08👍 👎+Z

   Ancilla-free error detection lifts a 100-qubit dynamic-circuit Bell pair from 0.39 to 0.59 fidelity, past the entanglement-certification threshold.

2. 85TInstantaneous-Frame Theory of Strongly Driven Parametric Gates
   Kentaro Kubo, Shinichi Inoue, Jushin Tei et al. · 2026-09-08👍 👎+Z

   Describing tunable-coupler gates in the instantaneous eigenbasis matches exact numerics where idle-frame models fail, cutting reliance on costly simulation for fast gates.

3. 84TA double-resonator coupler for high-fidelity two-qubit gates between superconducting qubits
   Seunghyeon Jin, Seungha Woo, Shinyoung Hwang et al. · 2026-09-04👍 👎+Z

   Two resonators bridged by one junction cancel residual ZZ far outside the straddling regime and give a 20 ns CZ below 1e-5 coherent infidelity.

4. 82TEJoint Mitigation of Algorithmic and Physical Errors in Noisy Hamiltonian Simulation
   Shuo Zhou, Xinzhao Wang, Ruiqi Zhang et al. · 2026-09-10👍 👎+Z

   Tying noise amplification to the Trotter step lets one Richardson extrapolation cancel both errors at constant overhead, shown on hardware and 100-qubit simulations.

5. 80TJosephson energy of superconducting junctions: amorphous versus crystalline tunnel barriers
   Wanting Zhang, Aldilene Saraiva-Souza, Félix Beaudoin et al. · 2026-09-08👍 👎+Z

   First-principles transport across ten amorphous barriers spreads Josephson energy over two orders of magnitude, tracing transmon scatter to Al-rich percolation paths.

6. 79TTETRIS-Q: Tiling-based Effective Transient-fault Reduction on Interleaved Superconducting Qubits
   Marzio Vallero, Gioele Casagranda, Flavio Vella et al. · 2026-09-04👍 👎+Z

   Phonon barriers plus interleaved code tiling cut radiation-induced logical errors by up to three orders of magnitude with no decoding-time penalty.

7. 78EQubit-Based Benchmarking of InP HEMT LNAs: Readout Fidelity Versus Power Consumption
   Junjie Li · 2026-09-07👍 👎+Z

   Judging cryogenic HEMT amplifiers by single-shot IQ histograms: 60% indium beats 70%, and 0.3 mW already reaches 80% assignment fidelity.

8. 77TA Platform-aware Compilation Framework for Fault-tolerant Quantum Computation
   Srushti Patil, Susan X. Chen, Andreas Juul Bay-Smidt et al. · 2026-09-08👍 👎+Z

   Cross-platform compiler puts small-molecule eigenenergy estimation near 10^4 physical qubits, with runtimes from 100 ms on superconducting hardware to 10^5 ms on atoms.

9. 76TSingle-tone drive-enhanced CROT gate for bosonic quantum error correction
   Shushen Qin, Long D. H. My, Adrian Copetudo et al. · 2026-09-07👍 👎+Z

   A single drive tone on a transmon coupled to two cavities yields a code-agnostic controlled-rotation gate for rotation-symmetric bosonic codes.

10. 74EProgrammable CMOS DAC Operating in Cryogenic Environments for Controlling Superconducting Qubits
    A. Pelteku, D. Reitz, M. Covington et al. · 2026-09-09👍 👎+Z

    A 90 nm CMOS current source shapes flux pulses with digitally tunable amplitude and edge slopes at cryogenic temperatures, matching circuit predictions.