2019/12/31 by Yusuf Turek · 9 citations
Computer Science · Physics and Astronomy · #Photon #Postselection #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum discord #Quantum entanglement #Quantum metrology #Radiation #Unitary state #Von Neumann architecture #Weak measurement #quant-ph
paper · pdf · doi:10.1088/1674-1056/ab9f23
published in Chinese Physics B 29(9), 090302 (IOP Publishing) · 12 pages, 30 figures
openalex created_date 2020/01/10 · openalex publication_date 2020/06/23 · arxiv created 2021/09/28 · arxiv updated 2022/02/16 · openalex updated_date 2026/08/05
Postselected von Neumann measurement characterized by postselection and weak value has been found to possess potential applications in quantum metrology and solved plenty of fundamental problems in quantum theory. As an application of this new measurement technique in quantum optics and quantum information processing, its effects on the features of single-mode radiation fields such as coherent state, squeezed vacuum state and Schrödinger cat sate are investigated by considering full-order effects of unitary evolution. The results show that the conditional probabilities of finding photons, second-order correlation functions, Q m -factors and squeezing effects of those states after the postselected measurement is significantly changed are comparable with the corresponding initial pointer states.