RESEARCH
Coherence, Dephasing, and Why Room Temperature Is Hard
Excitons lose their quantum phase to phonons, disorder, and interactions — and that loss is the central obstacle to room-temperature excitonic quantum devices.
RESEARCH · Section
Excitonic Research
The quasiparticles themselves — excitons, trions, biexcitons, polaritons, and the materials and spectroscopy that reveal them.
RESEARCH
How We See Excitons: From Photoluminescence to Ultrafast Pump-Probe
Excitons are invisible to the eye, but spectroscopy makes them visible — through the light they emit, absorb, and scatter.
RESEARCH
Exciton-Polaritons: Half Light, Half Matter
When an exciton couples strongly to a photon in a cavity, the two lose their separate identities — forming a polariton that is part light, part matter.
RESEARCH
Valleytronics: Using the Valley Degree of Freedom
Electrons in 2D crystals carry a valley label — K or K′ — that can store and process information, with light as the read-write tool.
RESEARCH
Moiré Excitons: Twisting Two Sheets Into a New Quantum Landscape
A small twist between two atomically thin layers creates a moiré superlattice — a periodic landscape that traps, orders, and correlates excitons.
RESEARCH
Interlayer Excitons: When Electrons and Holes Live Apart
In stacked two-dimensional crystals, the electron and hole can live in different layers — creating excitons with permanent dipoles, long lifetimes, and tunable interactions.
RESEARCH
Trions, Biexcitons, and the Exciton Zoo
Beyond the simple electron-hole pair lies a zoo of bound complexes — trions, biexcitons, and more — each with its own spectral fingerprint.
RESEARCH
What Is an Exciton? The Bound Pair That Makes Light Into Matter
An exciton is an electron and a hole bound by attraction — a neutral quasiparticle that lets semiconductors absorb, emit, and briefly store light.