Optical enhanced interferometry with two-mode squeezed twin-Fock states and parity detection<xref rid="cpb_29_3_034203fn1" ref-type="fn">*</xref><fn id="cpb_29_3_034203fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 11404040) and Qing Lan Project of the Higher Educations of Jiangsu Province of China.</p></fn>

Optical enhanced interferometry with two-mode squeezed twin-Fock states and parity detection**

Project supported by the National Natural Science Foundation of China (Grant No. 11404040) and Qing Lan Project of the Higher Educations of Jiangsu Province of China.

Hou Li-Li¹, Wang Shuai^{1, †}, Xu Xue-Fen^{2, ‡}

Phase sensitivity Δφ as a function of the phase shift φ for some different values of n: (a) for a given initial squeezing parameter, r = 0.7; (b) for a given total mean photon number, N¯=8 .