Micius: 30-picosecond quantum-secure time transfer
A satellite-based experiment reported quantum-secure time transfer with 30 ps precision, less than 1% quantum bit error rate and a 9 kHz time-data rate.
- Team / system
- Micius quantum time-transfer experiment
- Link geometry
- Satellite-to-ground optical channel
- Platform
- Quantum-secure satellite time transfer
- Year / programme
- 2020
01 · SYSTEM
How it was achieved
The experiment combined a quantum channel for security with precise optical timing measurements. Time tags and photon events were processed to align remote clocks while monitoring the channel for interception-sensitive disturbances.
02 · EVIDENCE
Evidence snapshot
- 01
30 ps reported time-transfer precision.
- 02
Quantum bit error rate below 1%.
- 03
9 kHz time-data rate.
03 · SIGNIFICANCE
Why it matters
Precision timing is a foundational service for navigation, distributed sensing, communications and future quantum networks; the demonstration connected timing accuracy with quantum-channel security.
05 · REFERENCES
Sources & references
The values in this file are traced to the sources below. Record language follows the wording supported by the primary evidence.
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