Linear optical Bell state measurement for rotation-symmetric cat codes
- Published
- Source
- arXiv
- Paper number
- 479
- Field
- Research
- arXiv ID
- 2606.22832
Key points
- It implements RS-cat code Bell state measurement with only a half beam splitter (HBS) and photon-number-resolving detectors (PNRDs).
- It distinguishes the four Bell states using discrete rotational symmetry, photon-number remainder information, and phase information.
- In the lossless and large-amplitude regime, it enables deterministic Bell state measurement for any symmetry order N.
- Numerical evaluation of photon loss shows that higher-order RS-cat codes are advantageous in certain loss regimes.
- Postselection can further increase success probability, and the required photon-number resolution is within practical reach.
Paper links
External research summaries. These are not HDATF publications or measured product results.