2023년 11월 16일(목) 콜로퀴움 안내입니다.

연사 : 이영훈 교수님 (인천대학교)

시간 : 16시 30분

강연장소 : 5E408

강연주제 : First Principles Design of Defect Qubits

강연내용 :  Solid-state spin defects are promising candidates for quantum computing and communication platforms using a scalable spin-photon interface. Diamond nitrogen-vacancy (NV) center defects are representative examples that exhibit long spin coherence times and spin-selective optical transitions. However, finding a single-point defect with all the desirable traits for generating quantum entanglement networks remains elusive. The talk briefly explains the operation principles of defect qubits for quantum information applications and provides guides to first principles characterization of fundamental qubit properties-electronic, magnetic, vibrational, optical properties, and thermodynamic stability. The seminar then closes by discussing our recent work regarding the computational discovery of promising defect qubits in two-dimensional monolayer transition metal dichalcogenids (2D TMDs). As a result of the comprehensive characterization, we proposed a defect family in 2D TMDs that is a promising candidate for quantum network and sensing. In order to advance the quantum era, the theoretical characterization and design, as well as the extensive experimental efforts, enable scalable quantum information systems composed of defect qubits in solid-state hosts.