Electromagnetic probes and heavy flavor from RHIC to LHC

It is now well established that strongly-interacting quark gluon plasma (sQGP) is formed in heavy ion collisions at RHIC. This discovery is confirmed at LHC, where a QGP with three times higher energy density is formed. Electromagnetic probes (direct photons and lepton pairs) and heavy quarks ($c$ and $b$ quarks and $c\bar{c}$ and $b\bar{b}$ bound states) have central roles to investigate the properties of the QGP. In this talk, I review experimental study of QGP at RHIC and LHC with electromagnetic probes and heavy quark probes.