Recent content by hongqiaozhang

hi,everyone! if i have a 3-level system,like this： now,i want know how to measure the two-photon detuning in this system,and i‘ve known that,Δ2 and Δ3 are the two- and on-photon detunings,like this paper said: my questions are below: 1.how other researchers measure these two parameters? they...

i have some questions about decay rate. 1：why do we need decay rate in these equations? 2：is it a constant for a specific medium? 3：it can be changed with respect to some conditions like temprature or pressure? 4：how can i know the decay rate of some energy levels in 85Rubidium

I have realized EIT with continuous laser. What are the requirements for the intensity, duration and repetition frequency if EIT is realized with pulsed laser? you can attach any reference:biggrin:thanks a lot!

I added this picture and you can see more details if you need.

Hello,everyone! Recently i am doing an experiments about electromagnetic induced transparency in 85rubidum gas. I have two light source,which use the polarization spectrom frequncy stablizaiton technology to make them stable.One is used for probing light,and the other one is used for coupling...

thank you.I noticed that.could you please read my reply to WernerQH?I just posted it. If you find any problems in my answer,please contact me.thank you!

thanks for your reply! Actually,I considered what you said. First,the time delay is an experimental result,so 32.5m/s is also an experimental result,you are right.what I want to do is use the function（1）as a theoretical result to compare with 32.5m/s. Secondly,I analysed the...

thank you so much!actually I considered this situation. I'll email the authers and post their answer if they reply me. thank you!

hello everyone! Recently,i'm reading a paper about slow light,that's really a famous work published in Nature.[Light speed reduction to 17 metrespersecond in an ultracold atomicgas]. But I'm trouble with some calculation about the velocity of slow light.here are below: i try to use the...