EDIT: Original title was "Guarantee" Nature publication for PhD?
I am currently applying as a PhD student in a group at the intersection of experimental physics and engineering in a rather interdisciplinary research environment in Germany. The group only exists for about 2 years now. The group leader told me that he would expect every PhD student to be author of at least one Nature spin-off paper at the end of their PhD (Nature Physics, Nature Electronics, Nature Photonics, ...) and not "only" journals like Physics Review Letters (in my eyes publishing in the PRL family is already quite the accomplishment?). He said they would choose their research topics in such a way that these expectations would be realistic.
Are such expectations realistic? Can one "force" publications in such high-impact journals just by deliberately choosing the right topics? I have no experience with publishing my research in journals and thus do not really know what to think about this.