.png){kind=icon}
返回
Unbounded randomness from uncharacterized sources
.png){kind=icon}
OA
AI
DOI：10.1038/s42005-022-01038-3.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Randomness is a central feature of quantum mechanics and an invaluable resource for both classical and quantum technologies. Commonly, in Device-Independent and Semi-Device-Independent scenarios, randomness is certified using projective measurements, and its amount is bounded by the quantum system's dimension. Here, we propose a Source-Device-Independent protocol, based on Positive Operator Valued Measurement (POVM), which can arbitrarily increase the number of certified bits for any fixed dimension. Additionally, the proposed protocol doesn't require an initial seed and active basis switching, simplifying its experimental implementation and increasing the generation rates. A tight lower-bound on the quantum conditional min-entropy is derived using only the POVM structure and the experimental expectation values, taking into account the quantum side-information. For symmetric POVM on the Bloch sphere, we derive closed-form analytical bounds. Finally, we experimentally demonstrate our method with a compact and simple photonic setup that employs polarization-encoded qubits and POVM up to 6 outcomes. The laws of quantum mechanics allow for the generation of genuine random numbers, but quantum random number generation schemes need additional assumptions on the sources and detection to ensure the security and their generation is limited by the system's dimension. The authors propose and experimentally demonstrate a quantum random number generation scheme based on positive operator valued measurements, lifting the requirement of a trusted source which can arbitrarily increase the number of certified bits for any dimension.
Keyword:
DEVICE-INDEPENDENT RANDOMNESS
QUANTUM
期刊
IF:
5.8
论文数:
2.8K
被引数:
9.2K
机构
引用论文
Fast self-testing quantum random number generator based on homodyne detection基于零差检测的快速自测量子随机数发生器
OAAI
OAAI分享收藏分享收藏Fluid semantics for passive stochastic process algebra cooperation.png)
Proceedings of the 3rd International Conference on Performance Evaluation Methodologies and ToolsOAAI
Proceedings of the 3rd International Conference on Performance Evaluation Methodologies and ToolsIF0
OAAI分享收藏Gemischtligandkomplexe. I. Allgemeine und theoretische Betrachtungen über Bildung von Gemischtligandkomplexen und ionophoretische TrennmöglichkeitenGemischtligandkomplexe. I.理论基础和理论基础
PREAI
分享收藏
查看更多内容