Experimental Demonstration of Adaptive Quantum State Estimation
Ryo Okamoto, Minako Iefuji, Satoshi Oyama, Koichi Yamagata, Hiroshi, Imai, Akio Fujiwara, and Shigeki Takeuchi
TL;DR
This paper reports the first experimental demonstration of adaptive quantum state estimation (AQSE), verifying its strong consistency and efficiency in estimating photon polarization parameters, with implications for quantum information and metrology.
Contribution
It provides the first experimental validation of AQSE's effectiveness and efficiency in quantum state estimation, confirming theoretical predictions.
Findings
AQSE accurately estimates photon polarization parameters
Strong consistency and asymptotic efficiency are experimentally verified
Demonstrates practical applicability of AQSE in quantum technologies
Abstract
The first experimental demonstration of an adaptive quantum state estimation (AQSE) is reported. The strong consistency and asymptotic efficiency of AQSE have been mathematically proven [ A. Fujiwara J. Phys. A 39 12489 (2006)]. In this Letter, the angle of linear polarization of single photons, the phase parameter between the right and the left circularly polarization, is estimated using AQSE, and the strong consistency and asymptotic efficiency are experimentally verified. AQSE will provide a general useful method in both quantum information processing and metrology.
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