At the request of another regular here (I'm An Atheist), I will try to first find out what people think a Jew is (as it seems soooo many here don't really know) and then maybe we can figure out where you are getting the idea that a Jew can NOT be an Atheist? And just how you came to that idea to begin with?
To help, I'll show what I have learned a Jew to be - first and foremost, they are an Ethnic group... much like Celts or African. Secondly, it is also considered a Religion... a Religion which is of the ethnic group originally, but others outside of the ethnic group can convert to (but this in no way makes them an Ethnic Jew). From what I have learned FROM Jews I know, you are Jewish only according to your Mothers Heritage. If your Mother is a Jew, then You are a Jew. If not, then you will not be considered a Jew (The Ethnic Group, not the Religion).
Do people realize that there is a difference between the Ethnic and the Religion?