en اپتیک کوانتمی، مخابرات کوانتمی و کامپیوترهای اپتیکی Quantum Optics, Quantum Communications, Quantom Computing پژوهشي Research <strong><span style="font-size:10.0pt"><span new="" roman="" style="font-family:" times="">We investigate the propagation of the normal two-photon number state and coherent state of light through a dispersive non-Hermitian bilayer structure composed of gain and loss layers, particularly at a discrete set of frequencies for which this structure holds PT-symmetric. We reveal how dispersion and gain/loss-induced noises in such a bilayer structure affect the antibunching property of the incident light. For this purpose, we have calculated the second-order coherence of the output state of the bilayer. Varying the loss layer coefficient, we show that the antibunching property of the incident light only retains to some extent, for small values of loss coefficient for the transmitted number state.</span></span></strong> Antibunching, Coherent state, Non-Hermitian, Number state, Parity-time (PT)-symmetric, Second-order coherence. 219 226 http://ijop.ir/browse.php?a_code=A-10-29-5&slc_lang=en&sid=1 Elnaz Pilehvar e.pilehvar@modares.ac.ir 10031947532846003869 10031947532846003869 No Nano Plasmo-Photonic Research Group, Faculty of Electrical and Computer Engineering, Tarbiat Modares University, P.O. Box 14115-194, Tehran 1411713116, Iran Ehsan Amooghorban amoghorban@gmail.com 10031947532846003870 10031947532846003870 No Faculty of Science, Department of Physics, Shahrekord University, P.O. Box 115, Shahrekord 88186-34141, Iran & Nanotechnology Research Center, Shahrekord University, Shahrekord, Iran Mohammad Kazem Moravvej-Farshi moravvej@modares.ac.ir 10031947532846003871 10031947532846003871 Yes Nano Plasmo-Photonic Research Group, Faculty of Electrical and Computer Engineering, Tarbiat Modares University, P.O. Box 14115-194, Tehran 1411713116, Iran