Publications

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2022
Tseng, Y-C, Wei W-C, Chen Y-C.  2022.  Efficient quantum memory for photonic polarization qubits generate by cavity-enhanced spontane-ous parametric downconversion. Opt. Express. 30, 19944(2022)
2021
Cheng, C-Y, Liu Z-Y, Hu P-S, Wang T-N, Chien C-Y, Shiu J-S, Yu IA, Chen Y-C, Chen Y-F.  2021.  Efficient frequency conversion based on electromagnetically induced transparency. Optics Letters. 46, 681(2021)
2020
Tseng, Y-C, Wei Y-C, Chen Y-C.  2020.  Efficient quantum memory for heralded single photons generated by cavity-enhanced spontaneous parametric downconversion. arXiv. 2011.14948Link
2012
Lin, C-C, Wu M-C, Shiau B-W, Chen Y-H, Yu IA, Chen Y-F, Chen Y-C.  2012.  Enhanced all-optical switching with double slow light pulses, Dec 28. Physical Review A. 86 AbstractWebsite
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2011
Lo, HY, Chen YC, Su PC, Chen HC, Chen JX, Yu IA, Chen YF.  2011.  Electromagnetically-induced-transparency-based cross-phase-modulation at attojoule levels, Apr. Physical Review A. 83:4., Number 4 AbstractWebsite

We report the experimental demonstration of electromagnetically-induced-transparency-based cross-phase-modulation at attojoule or, equivalently, few-hundred-photon levels. A phase shift of 0.005 rad of a probe pulse modulated by a signal pulse with an energy of similar to 100 aJ, equivalent to similar to 400 photons, was observed in a four-level system of cold (87)Rb atoms.

2004
Chen, YC, Simien CE, Laha S, Gupta P, Martinez YN, Mickelson PG, Nagel SB, Killian TC.  2004.  Electron screening and kinetic-energy oscillations in a strongly coupled plasma, Dec 31. Physical Review Letters. 93 AbstractWebsite

We study equilibration of strongly coupled ions in an ultracold neutral plasma produced by photoionizing laser-cooled and trapped atoms. By varying the electron temperature, we show that electron screening modifies the equilibrium ion temperature. Even with few electrons in a Debye sphere, the screening is well described by a model using a Yukawa ion-ion potential. We also observe damped oscillations of the ion kinetic energy that are a unique feature of equilibration of a strongly coupled plasma.

2000
Chen, YC, Lin WB, Hsue HC, Hsu L, Yu IA.  2000.  Effect of the trapping laser linewidth on the atom number in a magneto-optical trap, Oct. Chinese Journal of Physics. 38:920-926., Number 5 AbstractWebsite

We have experimentally studied the effect of the trapping laser linewidth on the number of capped atoms in a magneto-optical trap (MOT). Our data show that a significant number of the atoms can still be trapped in the MOT, even when the trapping laser linewidth is larger than the natural linewidth of the excited state of the driving transition.