A method and device for realizing a bidirectional optical diode

Abstract

The invention provides a method and device for realizing a bidirectional optical diode. The invention scheme is as follows: two oppositely incident coupling fields with a certain frequency detuning act on the hot alkali metal atom vapor chamber, so that the atomic medium periodically modulates the refractive index of the probe light, so that the two-way incident probe The transmission characteristics of light are effectively manipulated, realizing the function of a bidirectional optical diode with a certain frequency interval and frequency width. Doppler effect. Simultaneously introducing a pair of coherent pump fields can effectively improve the bidirectional transmission efficiency of the optical diode without affecting its isolation ratio. The device involved in the invention is easy to miniaturize and integrate, and forms a practical optical quantum device, which is widely used in multi-channel quantum state storage, quantum information storage such as tunable all-optical control optical switches, optical mirrors, and quantum relay networks. field.

Description

technical field [0001] The invention relates to the technical field of quantum optics and the interaction between light and matter. Specifically, two coupled laser beams with the same polarization and fixed frequency detuning act on the alkali metal atom vapor chamber to make the atomic medium opposite to the incident probe. The refractive index of light produces periodic absorption modulation, so that the transmission characteristics of light incident on the probe can be effectively controlled, thereby realizing the method and device for the function of a bidirectional optical diode. Background technique [0002] Optical diode is a passive device with unidirectional conductivity, that is, it only allows light in one direction to pass through without affecting its transmission characteristics. It is widely used in optical isolation technology and all-optical control in the field of laser technology and quantum optics. process. At present, there are two main ways to realize ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the traditional function of using gyromagnetic medium or photonic crystal material to generate optical isolation only allows light to propagate along a certain fixed direction and it is difficult to achieve continuous frequency tuning and all-optical tuning control, the present invention uses two beams Interaction of a coupled field with a certain frequency detuning and an alkali metal atom vapor chamber, providing a method and device for realizing a bidirectional optical diode

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