Yes, I have done quite a few of them. In jails, they are also referred to as sallyports.
I have done them for courthouses, jails, police stations, an airport customs area, clean rooms and medical research laboratories. Most of them 2 doors but I have done a couple 4 door applications.
With Genetec Security Center, you can set up a mantrap without needing to use an external controller.
For other applications, I have used the older Dortronics controllers or designed them myself (some customers have some unique timing requirements, door 1 cannot be opened for X seconds before door #2) using an IDEC SmartRelay. I am planning on writing an article in the future on using SmartRelays for unique applications.
I would be glad to help with the article.