M. Iqbal Bakti Utama is a Foresight Fellow 2023 in molecular machines. He actively engages in research at the intersection of materials physics, materials chemistry, and nanotechnology. Currently, he holds a postdoctoral position at Northwestern University in the United States, where he is affiliated with the Center for Molecular Quantum Transduction, working under the guidance of Prof. Mark Hersam. Previously, he completed his PhD at the University of California, Berkeley, under the supervision of Prof. Feng Wang. Dr. Utama's research is centered around the development of innovative properties in low-dimensional nanomaterials. He employs various experimental techniques, including molecular functionalization, to finely tune these materials for applications in electronics, photonics, and quantum information sciences. His research encompasses a wide range of activities, including material synthesis, multi-modal characterizations, and device applications. Originally from Indonesia, Dr. Utama is deeply committed to mentoring students and actively contributing to the improvement of the educational pipeline in the fields of science and engineering.
Quantum information science has the potential to transform computing, communication, and sensing. Among quantum architectures, photonic systems have the advantage of producing mobile qubits for high-speed information transmission. Single photons play a critical role in this context, and significant attention has been dedicated to developing solid-state materials with robust single-photon emission properties. Two-dimensional (2D) materials have attracted attention for quantum information science due to their ability to host single-photon emitters (SPEs). Although the properties of atomically thin materials are highly sensitive to surface modification, chemical functionalization remains unexplored in the design and control of 2D material SPEs. Here, we report a chemomechanical approach to modify SPEs in monolayer WSe2 through the synergistic combination of localized mechanical strain and noncovalent surface functionalization with aryl diazonium chemistry. By revealing conditions under which chemical functionalization tunes SPEs, this work broadens the parameter space for controlling quantum emission in 2D materials.
Several key parameters on 2D materials need to be improved for them to work as optically active qubits in practical applications, including extraction efficiency, excited-state lifetime, coherence time, quantum efficiency, stability, and emission wavelength control.