Recent progress in utilizing ultrafast light-matter interaction to control the macroscopic
properties of quantum materials is reviewed. Particular emphasis is placed on photoinduced …

The crystal structure of a solid largely dictates its electronic, optical and mechanical
properties. Indeed, much of the exploration of quantum materials in recent years including …

A new scientific frontier opened in 2009 with the start of operations of the world's first x-ray
free-electron laser (FEL), the Linac Coherent Light Source (LCLS), at SLAC National …

Terahertz (THz) light has proven to be a fine tool to probe and control quasi-particles and
collective excitations in solids, to drive phase transitions and associated changes in material …

In quantum materials, degeneracies and frustrated interactions can have a profound impact
on the emergence of long-range order, often driving strong fluctuations that suppress …

Terahertz-frequency optical pulses can resonantly drive selected vibrational modes in solids
and deform their crystal structures,,. In complex oxides, this method has been used to melt …

X-ray techniques have been used for more than a century to study the atomic and electronic
structure in practically any type of material. The advent of correlated electron systems, in …

Nonlinear optical excitation of infrared active lattice vibrations has been shown to melt
magnetic or orbital orders and to transform insulators into metals. In cuprates, this technique …

Light fields at terahertz and mid-infrared frequencies allow for the direct excitation of
collective modes in condensed matter, which can be driven to large amplitudes. For …

Strong optical pulses at mid-infrared and terahertz frequencies have recently emerged as
powerful tools to manipulate and control the solid state and especially complex condensed …