What he describes seems to be the same as flow ...the mental state of operation in which a person in an activity is fully immersed in a feeling of energized focus, full involvement, and success in the process of the activity.

For tips on how to create the zone that OP is talking about, read the wikipedia article [1]. The book Flow by Mihály Csíkszentmihályi [2] is also highly recommended.

1: http://en.wikipedia.org/wiki/Flow_(psychology)#Components_of...

2: http://www.amazon.com/Flow-Psychology-Experience-Mihaly-Csik...