Measurement of degenerate orbital angular momentum qubits by stimulated emission tomography
Seonghu Jung, Do-Kyeong Ko · 2026
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Description
Seonghu Jung and Do-Kyeong Ko demonstrated in 2026 a faster way to characterize quantum states carried by twisted light, where each photon's spiral pattern can encode far more than a single bit. The standard approach counts rare photon pairs one coincidence at a time, so measurements crawl, especially for high-dimensional states. Their alternative, stimulated emission tomography, shines a bright seed beam through the same process and reads the amplified result.
Rebuilding the state from these bright measurements gave a fidelity of about 91 percent against the expected state, with each projection taking a single second. The reconstructed state's purity measures matched theory well. The authors present the technique as an efficient replacement for slow tomography in quantum optics laboratories.
Catalog record
| CREATOR | Seonghu Jung, Do-Kyeong Ko |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 20655 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |