Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Kim, Kyungduk"'
Deep learning has fundamentally transformed artificial intelligence, but the ever-increasing complexity in deep learning models calls for specialized hardware accelerators. Optical accelerators can potentially offer enhanced performance, scalability,
Externí odkaz:
http://arxiv.org/abs/2307.08558
Publikováno v:
Phys. Rev. Lett. 131, 153801 (2023)
We experimentally investigate spatio-temporal lasing dynamics in semiconductor microcavities with various geometries, featuring integrable or chaotic ray dynamics. The classical ray dynamics directly impacts the lasing dynamics, which is primarily de
Externí odkaz:
http://arxiv.org/abs/2304.01313
Publikováno v:
Opt. Express Vol. 31, No. 7, 11966-11981 (2023)
We propose and experimentally demonstrate parallel LiDAR using random intensity fluctuations from a highly multimode laser. We optimize a degenerate cavity to have many spatial modes lasing simultaneously with different frequencies. Their spatio-temp
Externí odkaz:
http://arxiv.org/abs/2301.09781
Publikováno v:
Opt. Lett. Vol. 48, No. 3, pp. 574-577 (2023)
Lima\c{c}on-shaped microdisk lasers are promising on-chip light sources with low lasing threshold and unidirectional output. We conduct an experimental study on the lasing dynamics of Lima\c{c}on-shaped semiconductor microcavities. The edge emission
Externí odkaz:
http://arxiv.org/abs/2211.00203
Autor:
Kim, Kyungduk, Bittner, Stefan, Jin, Yuhao, Zeng, Yongquan, Guazzotti, Stefano, Hess, Ortwin, Wang, Qi Jie, Cao, Hui
Publikováno v:
APL Photonics 7, 056106 (2022)
The ray dynamics of optical cavities exhibits bifurcation points: special geometries at which ray trajectories switch abruptly between stable and unstable. A prominent example is the Fabry-Perot cavity with two planar mirrors, which is widely employe
Externí odkaz:
http://arxiv.org/abs/2201.02695
Autor:
Kim, Boseop, Kim, HyoungSeok, Lee, Sang-Woo, Lee, Gichang, Kwak, Donghyun, Jeon, Dong Hyeon, Park, Sunghyun, Kim, Sungju, Kim, Seonhoon, Seo, Dongpil, Lee, Heungsub, Jeong, Minyoung, Lee, Sungjae, Kim, Minsub, Ko, Suk Hyun, Kim, Seokhun, Park, Taeyong, Kim, Jinuk, Kang, Soyoung, Ryu, Na-Hyeon, Yoo, Kang Min, Chang, Minsuk, Suh, Soobin, In, Sookyo, Park, Jinseong, Kim, Kyungduk, Kim, Hiun, Jeong, Jisu, Yeo, Yong Goo, Ham, Donghoon, Park, Dongju, Lee, Min Young, Kang, Jaewook, Kang, Inho, Ha, Jung-Woo, Park, Woomyoung, Sung, Nako
GPT-3 shows remarkable in-context learning ability of large-scale language models (LMs) trained on hundreds of billion scale data. Here we address some remaining issues less reported by the GPT-3 paper, such as a non-English LM, the performances of d
Externí odkaz:
http://arxiv.org/abs/2109.04650
Autor:
Kim, Kyungduk, Bittner, Stefan, Zeng, Yongquan, Guazzotti, Stefano, Hess, Ortwin, Wang, Qijie, Cao, Hui
Publikováno v:
Science 371, 948 (2021)
Random numbers are widely used for information security, cryptography, stochastic modeling, and quantum simulations. Key technical challenges for physical random number generation are speed and scalability. We demonstrate a method for ultrafast gener
Externí odkaz:
http://arxiv.org/abs/2004.07157
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Publikováno v:
New J. Phys. 22, 083002 (2020)
We present experimental and numerical studies of broad-area semiconductor lasers with chaotic ray dynamics. The emission intensity distributions at the cavity boundaries are measured and compared to ray tracing simulations and numerical calculations
Externí odkaz:
http://arxiv.org/abs/1911.00539
Publikováno v:
Appl. Phys. Lett. 115, 071101 (2019)
We design and fabricate an on-chip laser source that produces a directional beam with low spatial coherence. The lasing modes are based on the axial orbit in a stable cavity and have good directionality. To reduce the spatial coherence of emission, t
Externí odkaz:
http://arxiv.org/abs/1905.03671