A new class of non-classical state of the radiation field,called as superposed state of two-mode vacuum state and two-mode coherent state was constructed.The mathematical structure of the superposed state of two-mode vacuum state and two-mode coherent statewas constructed,and its non-classical properties were discussed,namely squeezed effect,sub-Poissonian distribution,the second-order cross correlation function between the two modes.The numerical results show that the superposed state of two-mode vacuum state and two-mode coherent state possesses very obvious non-classical properties.Therefore it is a class of new non-classical quantum state.A new class of non-classical state of the radiation field,called as superposed state of two-mode vacuum state and two-mode coherent state was constructed.The mathematical structure of the superposed state of two-mode vacuum state and two-mode coherent statewas constructed,and its non-classical properties were discussed,namely squeezed effect,sub-Poissonian distribution,the second-order cross correlation function between the two modes.The numerical results show that the superposed state of two-mode vacuum state and two-mode coherent state possesses very obvious non-classical properties.Therefore it is a class of new non-classical quantum state.

Journal of Liaoning UniversityJan 1, 20080 citations

The Spacetime Structure of Quantum Objects

Vito Luigi Lepore

Springer eBooksJan 1, 19942 citations

Quasi-probability distribution of Superposed State of Two-mode Vacuum State and Two-mode Coherent State

XU Guang-wen

Non-classical states of the radiation field play very important role in quantum optics and have extensive application background in practice,therefore more and more people are greatly interested in how to construct non-classical states of various kinds.In this paper,we construct a new class of non-classical state of the radiation field,called superposed state of two-mode vacuum state and two-mode coherent state,we construct the mathematical structure of the superposed state of two-mode vacuum state and two-mode coherent state,discuss its quasi-probability distribution,furthermore the numerical results show that the superposed state of two-mode vacuum state and two-mode coherent state possess very obvious non-classical properties.Therefore it is a class of new non-classical quantum state.Non-classical states of the radiation field play very important role in quantum optics and have extensive application background in practice,therefore more and more people are greatly interested in how to construct non-classical states of various kinds.In this paper,we construct a new class of non-classical state of the radiation field,called superposed state of two-mode vacuum state and two-mode coherent state,we construct the mathematical structure of the superposed state of two-mode vacuum state and two-mode coherent state,discuss its quasi-probability distribution,furthermore the numerical results show that the superposed state of two-mode vacuum state and two-mode coherent state possess very obvious non-classical properties.Therefore it is a class of new non-classical quantum state.

Acta Sinica Quantum OpticaJan 1, 20110 citations

Classical versus non-classical photon states for detecting vacuum non-linearity

N. Ahmadiniaz, C. Kohlfürst, R. Shaisultanov +1 more

Quantum electrodynamics (QED) predicts that the vacuum should behave as a non-linear medium. For many schemes aimed at verifying this fundamental prediction, the signal consists of one or more photons in a certain mode (determined by polarization $σ$ and wave-number $\boldsymbol{k}$ ) which would be empty in the absence of a QED vacuum non-linearity. Here we consider modifying these schemes by sending in a classical or non-classical (e.g., squeezed) photon state instead of the initial vacuum state in that mode. We find that the detectability can be improved significantly.Quantum electrodynamics (QED) predicts that the vacuum should behave as a non-linear medium. For many schemes aimed at verifying this fundamental prediction, the signal consists of one or more photons in a certain mode (determined by polarization $σ$ and wave-number $\boldsymbol{k}$) which would be empty in the absence of a QED vacuum non-linearity. Here we consider modifying these schemes by sending in a classical or non-classical (e.g., squeezed) photon state instead of the initial vacuum state in that mode. We find that the detectability can be improved significantly.

quant-pharXiv:2608.21361Aug 24, 20260 citations

THE CAUSAL INTERPRETATION OF QUANTUM FIELDS AND THE VACUUM

P. N. Kaloyerou

Foundations of Physics LettersFeb 1, 20002 citations

σ

and wave-number

\boldsymbol{k}

) which would be empty in the absence of a QED vacuum non-linearity. Here we consider modifying these schemes by sending in a classical or non-classical (e.g., squeezed) photon state instead of the initial vacuum state in that mode. We find that the detectability can be improved significantly.