Quantum fidelity of electromagnetically induced transparency: the full quantum theory

Hao Hsu, Chin Yao Cheng, Jiun Shiuan Shiu, Ling Chun Chen, Yong Fan Chen

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We present a full quantum model to study the fidelity of single photons with different quantum states propagating in a medium exhibiting electromagnetically induced transparency (EIT). By using the general reservoir theory, we can calculate the quantum state of the transmitted probe photons that reveal the EIT phenomenon predicted by semiclassical theory while reflecting the influence of the quantum fluctuations of the strong coupling field. Our study shows that the coupling field fluctuations not only change the quantum state of the probe photons, but also slightly affect its transmittance. Moreover, we demonstrate that the squeezed coupling field can enhance the influence of its fluctuations on the quantum state of the probe photons, which means that the EIT effect can be manipulated by controlling the quantum state properties of the coupling field. The full quantum theory in this paper is suitable for studying quantum systems related to the EIT mechanism that would allow us to examine various quantum effects in EIT-based systems from a full quantum perspective.

Original languageEnglish
Pages (from-to)2097-2111
Number of pages15
JournalOptics Express
Volume30
Issue number2
DOIs
Publication statusPublished - 2022 Jan 17

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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