Metraipolis › archive › dc_42828107e316

All-to-All Connectivity in Superconducting Qubits via Metamaterial-Mediated Interactions — arXiv:2611.01180

Source: arXiv (en)
Original: https://arxiv.org/abs/2611.01180
License (as archived): CC0-1.0
Archived: 2026-11-03T11:47:24.573Z
SHA-256 of the archived text: 226872ec6e47e0750a1340a96f2faeb0778f84fc265b0b6039eeee9ca9fd0f5c
Stable URL of this page: https://metraipolis.com/documento/dc_42828107e316

How to cite

All-to-All Connectivity in Superconducting Qubits via Metamaterial-Mediated Interactions — arXiv:2611.01180 — arXiv (en), https://arxiv.org/abs/2611.01180 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_42828107e316 (Metraipolis archive dc_42828107e316, sha256 226872ec6e47e0750a1340a96f2faeb0778f84fc265b0b6039eeee9ca9fd0f5c)

BibTeX

@misc{dc42828107e316,
  title = {All-to-All Connectivity in Superconducting Qubits via Metamaterial-Mediated Interactions — arXiv:2611.01180},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2611.01180},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_42828107e316; sha256 226872ec6e47e0750a1340a96f2faeb0778f84fc265b0b6039eeee9ca9fd0f5c},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2611.01180. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

We show that encoding superconducting qubits as dual-rail or spin-locked transmons lets a metamaterial waveguide couple them all-to-all while suppressing the spurious entanglement that burdens shared-mode architectures, a step toward the non-local connectivity that quantum low-density parity-check codes require. In a bare-transmon architecture, the dispersive coupling between each populated mode and every idle qubit attached to it entangles spectators with the gate, and cancelling it by dynamical decoupling lengthens every gate. The encoding suppresses this coupling at the hardware level, from second to fourth order in the inverse qubit--mode detuning. A two-tone cross-resonance drive then generates a Mølmer-Sørensen interaction between encoded qubits, which we use for an entangling gate and a joint parity measurement, both selective and parallelizable through different modes. Simulating two dual-rail transmons sharing three resonators with a mode lifetime of $30\,\mu$s, we find that heralding transmon relaxation as erasure leaves a gate infidelity of $1.4\times10^{-3}$ at $152$~ns, dominated by photon loss. Photon loss and mode crowding together bound the array size. The gate duration must exceed the inverse mode spacing, which shrinks as the array lengthens, while photon loss grows with gate duration. This bound grows linearly with the mode lifetime and with the inter-resonator coupling; at a lifetime of $150\,\mu$s, five times the simulated value, and a coupling of $80$~MHz, a $10^{-3}$ error budget admits $13$ qubits on $25$ resonators.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2611.01180 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T11:09:37.335Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).