Search Results - "An, Kyungwon"

Coherent single-atom superradiance by Kim, Junki, Yang, Daeho, Oh, Seung-Hoon, An, Kyungwon

“…Superradiance is a quantum phenomenon emerging in macroscopic systems whereby correlated single atoms cooperatively emit photons. Demonstration of controlled…”
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Realization of superabsorption by time reversal of superradiance by Yang, Daeho, Oh, Seung-hoon, Han, Junseok, Son, Gibeom, Kim, Jinuk, Kim, Junki, Lee, Moonjoo, An, Kyungwon

“…Emission and absorption of light lie at the heart of light–matter interaction 1 . Although emission and absorption rates are regarded as intrinsic properties…”
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Frequency pushing enhanced by an exceptional point in an atom–cavity coupled system by Lee, Joohye, Kim, Jinuk, An, Kyungwon

“…We observed the frequency pushing of the cavity resonance as a result of the coupling of the cavity field with the ground state 138 Ba in a high-Q cavity. A…”
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Maximal Shannon entropy in the vicinity of an exceptional point in an open microcavity by Park, Kyu-Won, Kim, Jinuk, Moon, Songky, An, Kyungwon

“…The Shannon entropy as a measure of information contents is investigated around an exceptional point (EP) in an open elliptical microcavity as a non-Hermitian…”
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Practical lineshape of a laser operating near an exceptional point by Kim, Jinuk, Kim, Juman, Seo, Jisung, Park, Kyu-Won, Moon, Songky, An, Kyungwon

“…We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model…”
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Observation of an exceptional point in a chaotic optical microcavity by Lee, Sang-Bum, Yang, Juhee, Moon, Songky, Lee, Soo-Young, Shim, Jeong-Bo, Kim, Sang Wook, Lee, Jai-Hyung, An, Kyungwon

“…We present spectroscopic observation of an exceptional point or the transition point between mode crossing and avoided mode crossing of neighboring…”
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Thresholdless coherence in a superradiant laser by Oh, Seung-Hoon, Kim, Jinuk, Ha, Junseo, Son, Gibeom, An, Kyungwon

“…Lasing threshold in the conventional lasers is the minimum input power required to initiate laser oscillation. It has been widely accepted that the…”
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Observation of a half-illuminated mode in an open Penrose cavity by Kim, Juman, Kim, Jinuk, Seo, Jisung, Park, Kyu-Won, Moon, Songky, An, Kyungwon

“…The illumination problem in mathematics questions the existence of a bounded region in which light rays from a point light source do not illuminate the whole…”
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Hyperradiance by a stream of phase-correlated atomic dipole pairs traversing a high-Q cavity by Han, Junseok, Kim, Jinuk, Oh, Seung-hoon, Son, Gibeom, Ha, Junseo, An, Kyungwon

“…Hyperradiance in which radiation rate exceeds that of superradiance has been theoretically investigated in various coherently-coupled emitter-field systems. In…”
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Locking Multi-Laser Frequencies to a Precision Wavelength Meter: Application to Cold Atoms by Kim, Junwoo, Kim, Keumhyun, Lee, Dowon, Shin, Yongha, Kang, Sungsam, Kim, Jung-Ryul, Choi, Youngwoon, An, Kyungwon, Lee, Moonjoo

“…We herein report a simultaneous frequency stabilization of two 780-nm external cavity diode lasers using a precision wavelength meter (WLM). The laser lock…”
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Imprinting Skyrmion spin textures in spinor Bose-Einstein condensates by Choi, Jae-yoon, Kwon, Woo Jin, Lee, Moonjoo, Jeong, Hyunseok, An, Kyungwon, Shin, Yong-il

“…We investigate an experimental method for imprinting Skyrmion spin textures in a spinor Bose-Einstein condensate by rapidly moving the zero-field center of a…”
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Observation of a non-equilibrium steady state of cold atoms in a moving optical lattice by Chong, Kyeong Ock, Kim, Jung-Ryul, Kim, Jinuk, Yoon, Seokchan, Kang, Sungsam, An, Kyungwon

“…Non-equilibrium dynamics expands our understanding on physical processes based on the conventional equilibrium physics. In particular, non-equilibrium steady…”
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Corrigendum: Imprinting Skyrmion spin textures in spinor Bose-Einstein condensates (2012 New J. Phys. 14 053013) by Choi, Jae-yoon, Kwon, Woo Jin, Lee, Moonjoo, Jeong, Hyunseok, An, Kyungwon, Shin, Yong-il

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Divergent Petermann factor of interacting resonances in a stadium-shaped microcavity by Lee, Soo-Young, Ryu, Jung-Wan, Shim, Jeong-Bo, Lee, Sang-Bum, Kim, Sang Wook, An, Kyungwon

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Cylindrical microcavity laser based on the evanescent-wave-coupled gain by Moon, H J, Chough, Y T, An, K

“…A microcavity laser based on the gain only in the evanescent field region of whispering gallery modes has been demonstrated. A cylindrical microcavity of 125…”
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Observation of scarred modes in asymmetrically deformed microcylinder lasers by Lee, Sang-Bum, Lee, Jai-Hyung, Chang, Joon-Sung, Moon, Hee-Jong, Kim, Sang Wook, An, Kyungwon

“…We report observation of lasing in the scarred modes in an asymmetrically deformed microcavity made of liquid jet. The observed scarred modes correspond to…”
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Observation of sub-poisson photon statistics in the cavity-QED microlaser by Choi, Wonshik, Lee, Jai-Hyung, An, Kyungwon, Fang-Yen, C, Dasari, R R, Feld, M S

“…We have measured the second-order correlation function of the cavity-QED microlaser output and observed a transition from photon bunching to antibunching with…”
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Coherently pumped single-atom microlaser by Kyungwon An

“…We present a single-atom microlaser exhibiting superradiant lasing. It consists of a high-Q cavity and a supersonic beam of barium atoms, which enter the…”
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Validity of single-atom approximation in the many-atom microlaser by AN, Kyungwon

“…A criterion for the validity of the single-atom approximation in the many-atom microlaser was proposed and its adequateness has been tested in semiclassical,…”
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Chaos-assisted nonresonant optical pumping of quadrupole-deformed microlasers by Lee, Sang-Bum, Yang, Juhee, Moon, Songky, Lee, Jai-Hyung, An, Kyungwon, Shim, Jeong-Bo, Lee, Hai-Woong, Kim, Sang Wook

“…Efficient nonresonant optical pumping of a high- Q scar mode in a two-dimensional quadrupole-deformed microlaser has been demonstrated based on ray and wave…”
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