General two-mode squeezed states

Hong‐Chun Yuan, Heng-Mei Li, Ye‐Jun Xu +1 more

Hong-Yi Fan, Nian-Quan Jiang, Lu Hai-Liang

Jiao Chi, Hongjun Liu, Nan Huang +1 more

\n\tWe theoretically propose a quantum illumination receiver based on the ideal photon-subtracted two-mode squeezed state (PSTMSS) to efficiently detect the noise-hidden target. This receiver is generated by applying an optical parametric amplifier (OPA) to the cross correlation detection. With analyzing the output performance, it is found that OPA as a preposition technology of the receiver can contribute to the PSTMSS by significantly reducing the error probability than that of the general two-mode squeezed state (TMSS). Comparing with TMSS, the signal-to-noise ratio of quantum illumination based on ideal PSTMSS and OPA is improved more than 4 dB under an optimal gain of OPA. This work may provide a potential improvement in the application of accurate target detection when two kinds of resource have the identical real squeezing parameter.

Kevin Zelaya, Sanjib Dey, Véronique Hussin

Lu-Bi Deng, Lian-zhou Zhang, Song-gen Sun

A new generalized two-mode squeezed state which has less fluctuation in one quadrature phase then the usual two-mode squeezed state at the expense of increased fluctuation in the other quadrature is proposed. The coordinate representations and normally ordered expansions of the generalized two-mode squeeze operators and are given. The wavefunction of the generalized two-mode squeezed coherent state is obtained. The non-classical properties of the state such as squeezing and sub-Poissionian statistics are discussed.

Xiang‐Bin Wang, L. C. Kwek, C. H. Oh