Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →Exact two-way-assisted secret-key capacity of a pure-loss bosonic channel without repeaters.
The question, scope, and sources behind this Registry record.
Determine ultimate secret-key generation rate over a pure-loss bosonic channel with unlimited two-way classical communication and no quantum repeaters.
Current frontiers derived from accepted Claims.
The accepted equality closes this optimization result.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.