A photon counting and a squeezing measurement method by the exact absorption and dispersion spectrum of Λ-type Atoms.

Ghasem Naeimi,Samira Alipour,Siamak Khademi

doi:10.1186/s40064-016-3014-7

Ghasem Naeimi, Samira Alipour + Show 1 more

Open Access

https://doi.org/10.1186/s40064-016-3014-7

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Abstract

Recently, the master equations for the interaction of two-mode photons with a three-level Λ-type atom are exactly solved for the coherence terms. In this paper the exact absorption spectrum is applied for the presentation of a non-demolition photon counting method, for a few number of coupling photons, and its benefits are discussed. The exact scheme is also applied where the coupling photons are squeezed and the photon counting method is also developed for the measurement of the squeezing parameter of the coupling photons.

Highlights

Induced transparency (EIT) has been theoretically introduced by Kocharovskaya and Khanin (1988) and experimentally observed, by Harris et al (1990) and Harris (1997)
The authors of this paper presented an exact analytical solution for multilevel systems that interact with the probe and quantized coupling fields (Khademi et al 2015)
We present an exact analytical non-demolition photon counting method by investigating the absorption profile of probe field

Summary

Introduction

Induced transparency (EIT) has been theoretically introduced by Kocharovskaya and Khanin (1988) and experimentally observed, by Harris et al (1990) and Harris (1997). We present an exact analytical non-demolition photon counting method (for photons inside a cavity) by investigating the absorption profile of probe field. A full-quantum model of EIT is investigated for an ensemble of Λ-type three-level atoms, in which the probe and coupling fields are quantize.

Results

Conclusion