Direct measurement of the concurrence of hybrid entangled state based on parity check measurements<xref rid="cpb_28_1_010301fn1" ref-type="fn">*</xref> <fn id="cpb_28_1_010301fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 11747161) and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.</p> </fn>

Direct measurement of the concurrence of hybrid entangled state based on parity check measurements* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11474168 and 11747161) and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

Zhang Man¹, Zhou Lan², Zhong Wei^{1, 3}, Sheng Yu-Bo^{1, 3, †}

Schematic diagram of the principle of the PCM. Two coherent states in spatial modes c and d pass through a 50:50 BS. The photons in the output modes c₁ and d₁ are detected by the photon detectors D1 and D2, respectively.