Researches

It is a laboratory formed with a common academic purpose, especially quantum computation: materials and devices.
Prof. Seok-Kyun SON, who make up the laboratory, all experienced postdoctoral life at the University of Manchester (2015~2019). Our laboratory is that studies all fields dealing with the entire cycle from quantum materials to device fabrication and quantum phenomenon measurement for the implementation of quantum computing.  We also study two-dimensional materials (2DMs) based semiconductors like topological insulators and semimetals including bottom-up synthesis as well. 

Quantum mechanics allows quantum states to be individually manipulated and also mutually entangled to exhibit nonclassical behavior such as quantum teleportation and the no-cloning theorem. For the practical realization of quantum computing, it is essential to build a long-distance transport system that enables to connect quantum information of different qubits with each other. Also, it must be robust to the external environment in which the free exchange of information takes place. We study to connect semiconductor QD qubit and photon qubit systems for long-distance quantum network.

The competition between quality and productivity has been a major issue for large-scale applications of two-dimensional materials (2DMs). We are focusing on a layer-engineered atomic spalling technique for 2DMs that not only allows us to obtain large-size graphene, up to a millimeter size, but also allows selective thickness control. A thin metal film evaporated on 2DMs induces tensile stress such that spalling occurs, resulting in separation of 2DMs, where the number of exfoliated layers is adjusted by employing different internal stress. 

We have been working with the nobel-prize winning material graphene - single layers of carbon atoms which exhibit electronic properties relevant to a wide range of device applications and fundamental questions in condensed matter physics. We are trying to research the physics of graphene and other 2D materials in low dimensional systems in order to study their behavior in magnetic fields and more....

Graphene and other 2D materials have lots of potentials for new physics, nano-electronics, especially. We are trying to find new methods for 2D building blocks for electronics devices.  The group's research, condensed matter physics part, is interested in graphene based filament devices working in ambient condition and rhombohedral graphite devices, thermal transport devices etc. 

Raman spectroscopy is a versatile tool to identify and characterize the chemical and physical properties of these materials. This technique is so important that most of the papers published concerning these materials contain at least one Raman spectrum. Thus, here, we systematically review the developments in Raman spectroscopy of graphene-based materials.