Cavity-Enhanced Collective Quantum Processing with Polarization-Encoded Qubits
We introduce a cavity-enhanced optical architecture for collective quantum processing in which logical qubits are encoded in the polarization subspace of recirculating intracavity modes. The physical carrier and computational degree of freedom are explicitly separated: harmonic cavity bundles provide a stable resonant substrate, while programmable polarization transformations implement single-qubit operations. A polarization-selective nonlinear interaction in the entanglement region generates tunable controlled-phase gates, enabling a universal gate set. A parameter-scaling analysis shows that order-unity conditional phases are attainable in centimeter-scale cavities using experimentally ...
| Authors | Kamil Wereszczyński, Józef Cyran, Adam Brzezowski et al. |
|---|---|
| Primary category | quant-ph |
| Published | 11 May 2026 |
| Last updated at source | 12 August 2026 |
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