Chinese Optics Letters, 2016, 14 (3): 032701, Published Online: Aug. 6, 2018
Quantum Fisher information of triphoton states Download: 853次
270.5585 Quantum information and processing 120.5050 Phase measurement 270.2500 Fluctuations, relaxations, and noise 000.4430 Numerical approximation and analysis
Abstract
Based on the standard angular momentum theory, we create an experiment on preparing maximally path-entangled ( | N , 0 + | 0 , N ) 2 (NOON) states of triphotons. In order to explain the error between the theoretical and experimental data, we consider the background events during the experiment, and observe their effect on the uncertainty in S ^ 1 . Afterwards, we calculate the quantum Fisher information (QFI) of the states to evaluate their potential applications in quantum metrology. Our results show that by adding the appropriate background terms, the theoretical data of the produced states matches well with the experimental data. In this case, the QFI of the states is lower than maximally entangled NOON states, but still higher than a classical state.
Tao Li, Mingyang Li, Junming Huang. Quantum Fisher information of triphoton states[J]. Chinese Optics Letters, 2016, 14(3): 032701.