Applied Research of Quantum Information Based on Linear Optics
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Beschreibung
This thesis reports on outstanding work in two main subfields of quantum information science: one involves the quantum measurement problem, and the other concerns quantum simulation. The thesis proposes using a polarization-based displaced Sagnac-type interferometer to achieve partial collapse measurement and its reversal, and presents the first experimental verification of the nonlocality of the partial collapse measurement and its reversal. All of the experiments are carried out in the linear optical system, one of the earliest experimental systems to employ quantum communication and quantum information processing. The thesis argues that quantum measurement can yield quantum entanglement recovery, which is demonstrated by using the frequency freedom to simulate the environment. Based on the weak measurement theory, the author proposes that white light can be used to precisely estimate phase, and effectively demonstrates that the imaginary part of the weak value can be introduced by means of weak measurement evolution. Lastly, a nine-order polarization-based displaced Sagnac-type interferometer employing bulk optics is constructed to perform quantum simulation of the Landau-Zener evolution, and by tuning the system Hamiltonian, the first experiment to research the Kibble-Zurek mechanism in non-equilibrium kinetics processes is carried out in the linear optical system.
This thesis reports on outstanding work in two main subfields of quantum information science: one involves the quantum measurement problem, and the other concerns quantum simulation. The thesis proposes using a polarization-based displaced Sagnac-type interferometer to achieve partial collapse measurement and its reversal, and presents the first experimental verification of the nonlocality of the partial collapse measurement and its reversal. All of the experiments are carried out in the linear optical system, one of the earliest experimental systems to employ quantum communication and quantum information processing. The thesis argues that quantum measurement can yield quantum entanglement recovery, which is demonstrated by using the frequency freedom to simulate the environment. Based on the weak measurement theory, the author proposes that white light can be used to precisely estimate phase, and effectively demonstrates that the imaginary part of the weak value can be introduced by means of weak measurement evolution. Lastly, a nine-order polarization-based displaced Sagnac-type interferometer employing bulk optics is constructed to perform quantum simulation of the Landau-Zener evolution, and by tuning the system Hamiltonian, the first experiment to research the Kibble-Zurek mechanism in non-equilibrium kinetics processes is carried out in the linear optical system.
Nominated as an Excellent PhD Thesis by the University of Science and Technology of China Demonstrates experimentally measurement-induced quantum entanglement recovery Verifies the nonlocality of the partial collapse measurement and its reversal process Provides experimentally a precise phase estimation using white light and based on the quantum weak measurement theory Discusses the optical simulation of quantum dynamics across a Landau-Zener crossing supporting the adiabatic-impulse approximation Includes supplementary material: sn.pub/extras
Autor*in
Xiaoye Xu
Themen in »Applied Research of Quantum Information Based on Linear Optics«
Entanglement Evolution Kibble-Zurek Mechanism Landau-Zener Model Linear Optics Quantum Coherence Quantum Correlation Quantum Entanglement Quantum Measurement Quantum Non-equilibrium Dynamics Quantum Partial Collapse Measurement Quantum Simulation Quantum Weak Measurement