259 citations · 863 across the 19 of their papers we have counts for
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Room-temperature biphoton source with a spectral brightness near the ultimate limit
Jia-Mou Chen, Chia-Yu Hsu, Wei-Kai Huang +7
The biphotons, generated from a hot atomic vapor via the process of spontaneous four-wave mixing (SFWM), have the following merits: stable and tunable frequencies as well as linewi…
Generation of sub-MHz and spectrally-bright biphotons from hot atomic vapors with a phase mismatch-free scheme
Chia-Yu Hsu, Yu-Sheng Wang, Jia-Mou Chen +11
We utilized the all-copropagating scheme, which maintains the phase-match condition, in the spontaneous four-wave mixing (SFWM) process to generate biphotons from a hot atomic vapo…
Low-Loss High-Fidelity Frequency-Mode Hadamard Gates Based on Electromagnetically Induced Transparency
Kao-Fang Chang, Ta-Pang Wang, Chun-Yi Chen +5
A frequency beam splitter (FBS) with the split ratio of 0.5 or 1 can be used as the frequency-mode Hadamard gate (FHG) for frequency-encoded photonic qubits or as the quantum frequ…
Large Cross-Phase Modulations at the Few-Photon Level
Zi-Yu Liu, Yi-Hsin Chen, Yen-Chun Chen +5
We demonstrate an efficient cross-phase modulation (XPM) based on a closed-loop double-Λ system. The property of the double-Λ medium can be controlled by changing the phases of the…
Highly efficient coherent optical memory based on electromagnetically induced transparency
Ya-Fen Hsiao, Pin-Ju Tsai, Hung-Shiue Chen +7
Quantum memory is an important component in the long-distance quantum communication system based on the quantum repeater protocol. To outperform the direct transmission of photons…
Phase-dependent double-Λ electromagnetically induced transparency
Yi-Hsin Chen, Pin-Ju Tsai, Ite A. Yu +2
We theoretically investigate a double-Λ electromagnetically induced transparency (EIT) system. The property of the double-Λ medium with a closed-loop configuration depends on the r…
Radiation trapping inside a hollow-core photonic crystal fiber
H. H. Jen, Chang-Yi Wang, Kevin C. J. Lee +2
We report the radiation trapping effect inside a hollow-core photonic crystal fiber (PCF). An optical dipole trap was used to load and confine the atoms in the PCF without contacti…
Low-light-level four-wave mixing by quantum interference
Chang-Kai Chiu, Yi-Hsin Chen, Yen-Chun Chen +3
We observed electromagnetically-induced-transparency-based four-wave mixing (FWM) in the pulsed regime at low light levels. The FWM conversion efficiency of 3.8(9)% was observed in…