In low dimensional systems, such as zero dimensional quantum dots, we can study strongly interacting Fermion by coupling the quantum dot to a dissipative environment. For carbon nanotube quantum dots, we have explored the quantum phase diagram and a quantum critical point in the dissipative environment. Moreover, a Majorana Fermion state is observed with unitary quantum conductance in our dissipaitve quantum dot system. In our recent work, we studied the interaction of the Kondo system with dissipation which leads to a Kondo-Luttinger system as predicted by theory.
Importance of Diameter Control on Selective Synthesis of Semiconducting Single-Walled Carbon Nanotubes
ACS Nano 2014
A collaboration with Dr. Liu in Chemistry to study the growth of highly-enriched semiconducting CNTs.
Observation of Majorana quantum critical behaviour in a resonant level coupled to a dissipative environment
Nature Physics 2013
Majorana quantum critical behavior in a resonant level
Quantum Phase Transition in a resonant level with dissipation
Quantum phase transition in a resonant level coupled to interacting leads