研究目的
To propose a quantum optical device for the regularization of the Glauber–Sudarshan P functions of arbitrary quantum states, enabling the production of nonclassical states with regular P functions.
研究成果
The proposed quantum optical device successfully regularizes the P functions of arbitrary quantum states, producing nonclassical states with regular P functions. The method is feasible, as demonstrated by numerical simulations, and can be generalized to multimode light. This approach decouples the regularization procedure from state measurement, simplifying the characterization of quantum states.
研究不足
The technique requires precise control over the quantum optical setup and the classical states used for regularization. The feasibility is demonstrated through numerical simulations, and practical implementation may face challenges related to experimental imperfections and noise.
1：Experimental Design and Method Selection:
The study involves the use of linear optical elements and classical auxiliary light to implement a quantum process that regularizes the P function of quantum states. The method combines input states with specific Gaussian or non-Gaussian classical states on highly transmissive beam splitters.
2：Sample Selection and Data Sources:
The input states are arbitrary quantum states with possibly singular P functions. The classical states used for regularization are Gaussian or non-Gaussian.
3：List of Experimental Equipment and Materials:
The setup includes highly transmissive beam splitters, balanced and unbalanced homodyne detection setups, and classical light sources for generating the required Gaussian or non-Gaussian states.
4：Experimental Procedures and Operational Workflow:
The input quantum states are combined with classical states on beam splitters. The output states are then sampled using balanced or unbalanced homodyne detection to directly measure the regularized P functions without further processing.
5：Data Analysis Methods:
The sampled data from homodyne detection are analyzed to reconstruct the regularized P functions of the output states, demonstrating the feasibility of the approach through numerical simulations.
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