What are the frontiers and challenges in condensed matter physics?

[camillomorin]

In your opinion, what are the main challenges for future condensed matter physics? What type of material systems are more desirable to discover? Which quantum properties are the most interesting to demonstrate for future devices working at room temperature and ambient pressure (besides superconductivity)? What theoretical paradigms are the most intriguing? What experimental techniques can open new perspectives in condensed matter physics?

 

[berkeman]

In your opinion, what are the main challenges for future condensed matter physics? What type of material systems are more desirable to discover? Which quantum properties are the most interesting to demonstrate for future devices working at room temperature and ambient pressure (besides superconductivity)? What theoretical paradigms are the most intriguing? What experimental techniques can open new perspectives in condensed matter physics?

You go first, please.

You do appear (from your previous thread) to have the qualifications to ask advanced physics questions, so you must have done some reading on this question already. Can you give us your thoughts first? Thanks.