Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
The general theory of relativity, tested time and time again, is a cornerstone of modern physics — but marrying it with quantum mechanics remains a major challenge.
In our editorial in the April 2007 issue of Nature Physics we looked at the claim of the first demonstration of a commercial quantum computer — D-Wave's 16-qubit Orion. Eight years later, we ponder whether quantum technologies have really become commercial.
Scientists involved in nuclear research before and after the end of the Second World War continue to be the subjects of historical and cultural fascination.