Prof. Dr. Raymond Ooi Chong Heng

Universiti Malaya, Malaysia

Prof Dr. Raymond Ooi is a quantum physicist well known locally and internationally in quantum optics, nonlinear optics, plasmonics, molecular spectroscopy, statistical physics of Bose-Einstein condensates and interactions with intense laser pulses. In 2025 he was elected a Fellow of OPTICA for the development of quantum theoretical framework (Heisenberg-Langevin theory) on nonclassical photon correlations in Raman and quantum plasmonic systems. In 2013 he won the Malaysia Toray Science Foundation Science & Technology Award. He was elected a Fellow of the Academy of Sciences Malaysia (ASM) in 2015. He is also an elected Fellow of Academy of Engineering and Technology of the Developing World (AETDEW). He was a Visiting Professor at Nanyang Technological University in 2015-2019. Raymond Ooi obtained his Dr. rer. nat (PhD) from Universitaet Konstanz, Germany in 2003. He spent 3 years as a postdoc at Texas A&M University, was a regular Visiting Scientist at Princeton University and Max-Planck Institut fuer Quantenoptik, and has collaborated with reputed leaders in quantum physics. He has contributed to the theory of strong fields interactions while at KAIST and Korea University. In 2010, he made a sacrifice to return and develop quantum optics research for Malaysia, initiated "Quantum and Laser Science" research center at Universiti Malaya. Despite being a theorist, he recognizes the importance of experimentation, has secured a High Impact Research grant and single-handedly developed experimental lab on quantum and laser science, including the Femtosecond Laser and Optics facility. He leads the national quantum communication research program and also engaged in interdisciplinary/multidisciplinary projects including brain research, green technology and poverty alleviation. He has 2 patents on harnessing green energy. Raymond Ooi has pioneered quantum optics and technology research and education in Malaysia, developed an undergraduate course on Quantum Optics and a postgraduate course on Quantum Technology. Besides being invited/plenary speaker at more than 35 international conferences, he regularly gave open public Seminars and Workshops to inspire students and the public on the wonders of quantum science and technology. He was invited a Guest of Honour at 6th Science & Technology Program (STEP) and Mustafa Prize Award ceremony, Tehran, Iran in 2019. In 2018, he successfully initiated and chaired the first international conference on Quantum and Nonlinear Optics (QNO2018) attended by many luminaries in the field through the support of three external funds.

Keynote Title: Quantum Spectral Sensing with Atomic Raman System `in Cavity with Controllable Laser and Magnetic Fields

In this era of rapid advancement in quantum technology, atomic quantum system has emerged as a promising component with potential applications in quantum sensing, communication and information processing. This study investigates the dynamics of an open quantum system in a cavity interacting with phonon and radiation baths, modeled using quantum master equations in both von Neumann and Lindblad forms to accurately capture dissipation and decoherence effects. To control and mitigate decoherence, the system is coupled to laser fields and magnetic fields, with dynamics simulated. The analysis incorporates Raman transitions and a time-independent Rabi frequency to study system correlations, covariances, and spectra. Furthermore, time-dependent Rabi frequencies are introduced to explore extended system dynamics and refine control strategies. These results provide valuable insights into optimizing quantum memory performance in realistic quantum environments.