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Experimental Realization of Device-Independent Quantum Randomness Expansion
- Source :
- Physical Review Letters. 126
- Publication Year :
- 2021
- Publisher :
- American Physical Society (APS), 2021.
-
Abstract
- Randomness expansion where one generates a longer sequence of random numbers from a short one is viable in quantum mechanics but not allowed classically. Device-independent quantum randomness expansion provides a randomness resource of the highest security level. Here, we report the first experimental realization of device-independent quantum randomness expansion secure against quantum side information established through quantum probability estimation. We generate $5.47\times10^8$ quantum-proof random bits while consuming $4.39\times10^8$ bits of entropy, expanding our store of randomness by $1.08\times10^8$ bits at a latency of about $13.1$ h, with a total soundness error $4.6\times10^{-10}$. Device-independent quantum randomness expansion not only enriches our understanding of randomness but also sets a solid base to bring quantum-certifiable random bits into realistic applications.<br />Comment: 24 pages, 8 figures, 5 tables
- Subjects :
- Physics
Discrete mathematics
Quantum Physics
Sequence
FOS: Physical sciences
General Physics and Astronomy
01 natural sciences
Quantum indeterminacy
Quantum probability
0103 physical sciences
Side information
Quantum Physics (quant-ph)
010306 general physics
Entropy (arrow of time)
Realization (systems)
Quantum
Randomness
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 126
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....da8e9bf464df110c1492adebf735385f