[Joint CQSE & NCTS Seminar] Quantum Advantages using superposed trajectories

• Event Date: 2024-11-01
• Chen, Jhan Yu 陳詹喻
• Quantum Information and Quantum Computing Quantum computing and interdisciplinary applications
• Speaker: Prof. Yueh-Nan Chen (National Cheng Kung University)  /  Host: Profs. Hsi-Sheng Goan & Ching-Ray Chang
  Place: Rm. 104, Chin-Pao Yang Lecture Hall, Department of Physics/CCMS, NTU

Title: [Joint CQSE & NCTS Seminar] Quantum Advantages using superposed trajectories
Speaker: Prof. Yueh-Nan Chen (National Cheng Kung University)
Time: 2024/11/01 (Fri.) 14:20-16:20
Place: Rm. 104, Chin-Pao Yang Lecture Hall, Department of Physics/CCMS, NTU
Online: https://nationaltaiwanuniversity-zbh.my.webex.com/nationaltaiwanuniversity-zbh.my/j.php?MTID=m7601bdfa496ccaf8aac2838aab8c25f2
 

Abstract

Superposition of trajectories, which modify quantum evolutions by superposing paths
through interferometry, has been utilized to enhance various quantum communication
tasks. However, little is known about its impact from the viewpoint of open quantum
systems. Thus, we examine this subject from the perspective of system-environment
interactions. We show that the superposition of multiple trajectories can result in
quantum state freezing, suggesting a space-time dual to the quantum Zeno effect. In
addition, nontrivial Dicke-like super (sub) radiance can be triggered without utilizing
multiatom correlations. We further show that the superposition of trajectories can be
used to enhance the performance of the steering heat engine and the quantum
battery.
 

Biography

Chen Yueh-Nan
Department of Physics, National Cheng Kung University

Education
 Ph.D., Physics, Nov. 2001, National Chiao-Tung University, Hsinchu, Taiwan
 B.Sc., Physics, June 1996, National Chiao-Tung University, Hsinchu, Taiwan

Current position and relevant experience
 Distinguished Professor of NCKU (2018 ~ present)
 Center Director of QFort (2020 ~ 2023)
 Executive Committee of NCTS (2021 ~ present)
 Editorial Board Member of Scientific Reports (2017 ~ present)
 Review Panel of Minister of Science and Technology (2017~2019)
 Center Scientist of NCTS (2006 ~ 2010 and 2015~2020)
 Professor, Dep. of Physics, NCKU (2014 ~ present)
 Associate Professor, Dep. of Physics, NCKU (2010 ~ 2014)
 Assistant Professor, Dep. of Physics, NCKU (2006 ~ 2010)

Fields of specialty
Quantum Information Science, Quantum Optics, and Quantum Transport

Major awards and honors
 MOST Outstanding Physics Research Award (2021)
 CTCI Outstanding Physics Research Award (2020)
 Ta-You Wu Memorial Award (2013)
 K. T. Li Research Award (2012)
 NCTS Young Theorist Award (2010)