Rescheduled Seminar- IAMS Upcoming Activities 原分所學術演講活動
消息來源：原分所
截止日期：2026-08-26
The lecture originally scheduled for tomorrow has been rescheduled to July 21st.
1.IAMS Lecture
中研院原分所演講公告
| Title | Playing with Machine Learning Interatomic Potentials: Water Clustering in MOFs and in Atmospheric Aerosols |
| Speaker | Prof. Kaito Takahashi Sirindhorn International Institute of Technology, Thailand 高橋開人教授 |
| Time | 2:30 PM, July 15 (Wednesday), 2026 |
| Venue | Dr. Poe Lecture Hall, IAMS 本所浦大邦紀念講堂（臺大校園內） |
| Contact | Dr. Jer-Lai Kuo |
2.IAMS Lecture
中研院原分所演講公告
| Title | Building a novel quantum light-matter interface with cold atoms coupled to a nanophotonic circuit |
| Speaker | Prof. Chen-Lung Hung Department of Physics and Astronomy, Purdue University, Chen-Lung Hung教授 |
| Time | 11:00 AM, July 21 (Tuesday), 2026 |
| Venue | C. T. Chang Memorial Hall (NTU Campus), IAMS 本所張昭鼎紀念講堂（臺大校園內） |
| Contact | Dr. Ming-Shien Chang |
| Abstract | Interfacing cold atoms with nanophotonic circuits offers a promising route toward scalable quantum technologies, from quantum nonlinear optics to quantum networking, by leveraging the indistinguishability of neutral atoms and the scalability of photonic circuits. Cold atom-integrated nanophotonic circuits can particularly build up quantum phase coherence to greatly enhance the fidelity of photon storage in an unprecedented way. Densely packed atoms that are collectively coupled via multiple photonic modes (or channels) could exhibit dissimilar emission dynamics into these modes depending on their configuration and how they are excited. One striking example is “selective radiance” in subwavelength-spaced atom arrays [1], where a collective excitation couples superradiantly to a phase- matched photonic channel while being strongly suppressed in coupling to all other modes due to phase- mismatch and subradiance. In this talk, I will discuss the challenges we have overcome in recent years to achieve efficient loading, laser cooling, and trapping of many cold atoms, for the first time, on a nanophotonic microring resonator [2,3], and a recent demonstration of near-deterministic single atom loading on a microring [4]. I will discuss our combined experimental [5] and theoretical [6] investigations of the collective emission dynamics of a dense atomic ensemble interacting simultaneously with a resonator mode of the microring and with free-space radiative modes. Our results show that, when controllably driven by the resonator to different collective states, the trapped atoms can superradiantly couple to the resonator, while exhibiting either subradiant or superradiant signatures in free-space emission. I will discuss the implication of these effects for optimizing collective light-matter interfaces and the prospects of further using ordered atom array on our platform for select quantum applications. References [1] Asenjo-Garcia et al, Phys. Rev. X 7, 031024 (2017). [2] Xinchao Zhou et al, Phys. Rev. Lett. 130, 103601 (2023). [3] Xinchao Zhou et al, Phys. Rev. X 14, 031004 (2024). [4] Xinchao Zhou et al, arXiv:2606.07800 (2026). [5] Xinchao Zhou et al, Phys. Rev. Lett. 135, 113601 (2025). [6] Deepak Suresh et al, Phys. Rev. A 112, 043717 (2025). |
3.IAMS Lecture
中研院原分所演講公告
| Title | Neural Computations Underlying Polarization Vision in Cephalopods |
| Speaker | Dr. Tomoyuki Mano Computational Neuroethology Unit , Okinawa Institute of Science and Technology 真野智之博士 沖繩科學技術大學 |
| Time | 11:00 AM, August 26 (Wednesday), 2026 |
| Venue | C. T. Chang Memorial Hall (NTU Campus), IAMS 本所張昭鼎紀念講堂（臺大校園內） |
| Contact | Dr. Chia-Lung Hsieh |
| Abstract | Underwater environments prominently feature a dimension of light invisible to our own eyes, polarization. Cephalopods (octopus, cuttlefish and squid) detect polarization with both high sensitivity and resolution, skillfully utilizing it for complex behaviors such as hunting and communication. However, the neural mechanisms for encoding patterns of light polarization remain poorly understood. Using the bigfin reef squid (Sepioteuthis lessoniana), we developed a new head- fixation method to perform two photon calcium imaging in awake squid, providing the first in vivo recordings of the cephalopod visual system at cellular resolution. In the optic lobe cortex, the brain region receiving input from retinal photoreceptors, we identified distinct neuron classes defined by spatiotemporal tuning and light intensity vs polarization specificity, including (i) integrators of polarized photoreceptor inputs, (ii) neurons selective for a single polarization orientation, and (iii) neurons that subtract orthogonal polarization signals—together suggesting notable parallels with color coding in the vertebrate retina. Neuropixels recordings from downstream visual brain regions revealed evidence for hierarchical processing: receptive fields expanded with depth, and intensity and polarization signals were integrated with progressively greater complexity. Collectively, our study provides new insights into the neural computations underlying cephalopods’ specialized underwater vision and the convergent evolution of visual systems. |