How to do atomic swap with bitcoin? I have read about the ATOMIC SWAP, I could find only the concept level and could not find technically.  Is there any doc about atomic swap to achieve that technically and code sources to achieve this.
Currently atmoic swaps aren't really done except in really special occasions and with specially crafted transactions. There aren't really services that offer atomic swaps and existing software cannot perform atomic swaps without special modifications.

There is currently ongoing work on creating actually usable and easy to use atomic swap software. Most of this is working through the Lightning Network and HTLCs.