Experimental demonstration of measurement-device-independent measure of quantum steering
Abstract
Within the framework of quantum refereed steering games, quantum steerability can be certified without any assumption on the underlying state nor the measurements involved. Such a scheme is termed the measurement-device-independent (MDI) scenario. Here, we introduce a measure of steerability in an MDI scenario, i.e., the result merely depends on the observed statistics and the quantum inputs. We prove that such a measure satisfies the convex steering monotone. Moreover, it is robust against not only measurement biases but also losses. We also experimentally estimate the amount of the measure with an entangled photon source. As two by-products, our experimental results provide lower bounds on an entanglement measure of the underlying state and an incompatible measure of the involved measurement. Our research paves a way for exploring one-side device-independent quantum information processing within an MDI framework.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 08, 2020
- Source ID
- 10.1038/s41534-020-00307-9
Entities
People
- Chuan-Feng Li
- Franco Nori
- Guang-can Guo
- Guo-Yong Xiang
- Hong-Bin Chen
- Huan-Yu Ku
- Shin-Liang Chen
- Yuan-yuan Zhao
- Yueh-Nan Chen
Organizations
- Army Research Office
- Foundational Questions Institute
- Japan Science and Technology Agency
- Japan Society for the Promotion of Science
- NTT Research
- National Natural Science Foundation of China
- National Science and Technology Council