Hot charge carriers in graphene exhibit fascinating physical phenomena, whose
understanding has improved greatly over the past decade. They have distinctly different …

Toroidal moments in artificial media have received growing attention and considered as a
promising framework for initiating novel approaches to manage intrinsic radiative losses in …

Quantum geometric properties of Bloch wave functions in solids, that is, Berry curvature and
the quantum metric, are known to significantly influence the ground-and excited-state …

The success of metal-based plasmonics for manipulating light at the nanoscale has been
empowered by imaginative designs and advanced nano-fabrication. However, the …

Optical excitation typically enhances electrical conduction and low-frequency radiation
absorption in semiconductors. We, however, observe a pronounced transient decrease of …

Van der Waals heterostructures consisting of graphene and transition metal
dichalcogenides have shown great promise for optoelectronic applications. However, an in …

Graphene is conceivably the most nonlinear optoelectronic material we know. Its nonlinear
optical coefficients in the terahertz frequency range surpass those of other materials by …

Graphene-enhanced optoelectronic terahertz (THz) signal processing offers an exquisite
potential for tailoring extreme-subwavelength platforms to develop tunable and highly …

Graphene near charge neutrality is expected to behave like a quantum-critical, relativistic
plasma—the “Dirac fluid”—in which massless electrons and holes collide at a rapid rate. We …

Many promising optoelectronic devices, such as broadband photodetectors, nonlinear
frequency converters, and building blocks for data communication systems, exploit …