I theoretically investigate various quantum systems and explore applications of quantum information. I have proposed quantum error correcting protocols to extend the coherence time of quantum systems, studied topological quantum systems robust against local perturbations, classified quantum repeater networks to enable global scale secure quantum communication, invented quantum sensing protocols with better sensitivity than classical … Continued
Quantum mechanics underlies nearly all modern technology, having enabled the classical computer, and literally redefined our units of measure through quantum metrology. More recently, a new generation of experiments has begun to assert direct control over quantum mechanical systems, in areas encompassing computation, communication, and sensing. Our group studies digital quantum information, developing novel qubits, … Continued
Research in my group is directed towards understanding the nature of elementary processes in biological systems. We relate dynamics and structures to functions at the most fundamental level with state-of-the-art femtosecond lasers and molecular biology techniques. The laboratory ultimately will have the capability of time resolution from femtosecond to millisecond (second); biological systems can be … Continued
My group studies ultracold gases of atoms and molecules. At temperatures a million times colder than interstellar space and at densities a million times thinner than air, quantum mechanics takes center stage. Atoms behave as waves, they interfere like laser light, and form novel states of matter, such as Bose-Einstein condensates. With attractive interactions, fermionic … Continued
My research focuses on the theory of strongly interacting and disordered systems. I am interested in new kinds of correlated states of matter that arise in various interacting many-body systems, especially when their understanding requires new theoretical tools and techniques. In particular, I worked on superconductivity in new regimes, far from equilibrium many-body systems, mesoscopic … Continued
My research mainly focuses on quantum many-body systems with strong interaction and strong quantum fluctuation. In the last 20 years, our field has made tremendous progresses towards understanding and classifying exotic states of matter under extreme conditions. But we believe we have only understood the tip of the iceberg in this rapidly developing field. Most … Continued
I work in Condensed Matter Theory with the following materials: Quasi-one-dimensional organic conductors, such as (TMTSF)2X. I worked on theories of the angular magnetoresistance oscillations (AMRO), the midgap Andeev bound states for triplet p-wave superconductivity, the Magnetic-Field-Induced Spin-Density Wave (FISDW) and the quantum Hall effect (QHE); – Cuprate high-temperature superconductors; – Ruthenate superconductors Sr2RuO4. I … Continued
My principal research field is experimental condensed matter physics, and my research group at Caltech currently focuses on scientific and technological topics of correlated electrons (e.g., high-temperature superconductors; novel magnetic systems), topological materials (e.g., topological insulators and superconductors; topological states and channels for quantum information), low-dimensional systems (e.g., van der Waals materials, including graphene, h-BN … Continued
My research focuses on emerging phenomena in low dimensional materials, such as Luttinger liquid in one dimensional metal, quantum critical behavior and electron second sound in graphene, spin and Valley degrees of freedoms in two dimensional heterostructures, and spatial-temporal imaging of elementary excitations.
My research involves experiments with laser-cooled atoms in optical lattices and other light traps. My group uses cold, trapped atoms to make precise measurements of fundamental constants and to test fundamental symmetries. We also use atoms as model systems to address issues in atomic physics, condensed-matter physics, quantum mechanics, and statistical mechanics. Current research includes: … Continued