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Quantum Mechanics in the Labs Lee In-Goo Sopheak Seng 0. Contents (1) Introduction (2) What we study (3) Q.M in my lab (4) Finish 1. Introduction • • • • Quantum Chaos Applications Lab Supervisor : Prof. Kim Chill Min Office : K503 Members : 3 members in master’s course 2 members in doctor’s course 2. What we study • Designing a micro cavity laser • Optical power is very low… but • High Q-factor • Low threshold • High density optoelectronic integration 3. Q.M in my lab Classical Ray Optics : Reflection rule Snell’s law Fresnel’s eq. Wave equation solution : Helmholtz equation → similar to Schrodinger eq. The Resonance states are eigen-states for the micro cavity (potential well) 3. Q.M in my lab Example. Limacon shape Because of the deformation, the motions get non-linearity → Resonance have a difference, according to the initial point States are perturbed → Deformation makes a perturbation!! 4. Finish • We can see the LINK of the Classical Mechanics and Quantum Mechanics through the micro cavities • And we improve the micro cavity laser (Q-factor, lasing direction, light power, etc..) Introduction to QOQI Quantum Optics & Quantum Information Lab • Supervised by: Prof. Son Wonmin • Students: • 4 Integrated Master & Doctoral Course • 2 Master • Office: K318B • http://qoqi.sogang.ac.kr/index.php/Main_Page QOQI • What is Quantum Information? – Study about physical information in quantum states – Recent subject (1990s) • Why use Quantum Mechanics? QM in QOQI • “Quantum Cryptography” Post-process in Quantum Key Distribution – QM: Q. Superposition + Q. Entanglement + Information in Q. state = secure communication • “Precision Measurement” – QM: Study application of Entanglement Conclusion • QOQI Lab: QM is one the most important tool for better understanding of Quantum Information. Thank you! Q&A ?