In cooperation with the Iranian Nuclear Society

Document Type : Research Paper


1 Photonics and Quantum Technologies Research School

2 ResearcherPhotonics and Quantum Technologies Research School


This study investigates the effect of quantum scissors on coherent state superposition. Quantum scissors consist of two beam splitters and two single-photon detectors. We have a superposition state of the single-photon state and vacuum state at the output. In this study, the ideal single photon, vacuum state, and superposition of coherent states are applied to the scissors as incident fields. The detectors detect single and zero photons, while we have truncation of the superposition state. In this study, the probability of success of the scissor, the amplification factor, fidelity, and efficiency factor of the scissor are calculated. The maximum probability of success is 25%, which is related to the even coherent state superposition. The results show that the ability of the scissor for amplification is the maximum value when the incident field phase is near . For a fixed value of the incident field intensity, the closer the incident phase is to , the scissor efficiency is lower. The results state that due to the dependence of the investigated parameters on the characteristics of the incident state, quantum scissors can be used to characterize the superposition of coherent states.