259 citations · 863 across the 19 of their papers we have counts for
19 papers
Optimizing Population Accumulation in Quantum States Using Microwave Spectroscopy
Jia-You Liou, Chi-En Wu, Hsuan-Jui Su +1
We present an all-optical method for efficiently preparing cold atoms in a desired Zeeman state, either on the magnetically insensitive clock state (m_F=0) or a particular state su…
Experimental Demonstration of Stationary Dark-State Polaritons Dressed by Dipole-Dipole Interaction
Bongjune Kim, Ko-Tang Chen, Kuei-You Chen +4
Dark-state polaritons (DSPs) based on the effect of electromagnetically induced transparency are bosonic quasiparticles, representing the superpositions of photons and atomic groun…
Optical pumping effects on the Rydberg EIT spectrum
Hsuan-Jui Su, Jia-You Liou, I-Chun Lin +1
We provide a universal discussion of the interplay between Rydberg-state electromagnetically induced transparency (EIT) and optical pumping (OP) in a thermal Rb87 medium. By pumpin…
Optimizing the Rydberg EIT spectrum in a thermal vapor
Hsuan-Jui Su, Jia-You Liou, I-Chun Lin +1
We present Rydberg-state electromagnetically-induced-transparency (EIT) measurements examining the effects of laser polarization, magnetic fields, laser intensities, and the optica…
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…
Enhanced spectral profile in the study of Doppler-broadened Rydberg atoms
Bo-Han Wu, Ya-Wen Chuang, Yi-Hsin Chen +3
Combination of the electromagnetically-induced-transparency (EIT) effect and Rydberg-state atoms has attracted great attention recently due to its potential application in the phot…
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…
Rydberg polaritons in a thermal vapor
Fabian Ripka, Yi-Hsin Chen, Robert Löw +1
We present a pulsed four-wave mixing (FWM) scheme via a Rydberg state to create, store and retrieve collective Rydberg polaritons. The storage medium consists of a gas of thermal R…
Pulsed Rydberg four-wave mixing with motion-induced dephasing in a thermal vapor
Yi-Hsin Chen, Fabian Ripka, Robert Löw +1
We report on time-resolved pulsed four-wave mixing (FWM) signals in a thermal Rubidium vapor involving a Rydberg state. We observe FWM signals with dephasing times up to 7 ns, stro…
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…
Coherent Optical Memory with High Storage Efficiency and Large Fractional Delay
Yi-Hsin Chen, Meng-Jung Lee, I-Chung Wang +4
A high-storage efficiency and long-lived quantum memory for photons is an essential component in long-distance quantum communication and optical quantum computation. Here, we repor…
Demonstration of the Interaction between Two Stopped Light Pulses
Yi-Hsin Chen, Meng-Jung Lee, Weilun Hung +3
We report the first experimental demonstration that two light pulses were made motionless and interacted with each other via a medium. The interaction time is, in principle, as lon…
An effective thermal-parametrization theory for the slow-light dynamics in a Doppler-broadened electomagnetically induced transparency medium
Shih-Wei Su, Yi-Hsin Chen, Shih-Chuan Gou +1
We model the effects of atomic thermal motion on the propagation of a light pulse in an electromagnetically induced transparency medium by introducing a set of effectively temperat…
Dynamics of slow light and light storage in a Doppler-broadened electromagnetically-induced-transparency medium: A numerical approach
Shih-Wei Su, Yi-Hsin Chen, Shih-Chuan Gou +2
We present a numerical scheme to study the dynamics of slow light and light storage in an electromagneticallyinduced- transparency (EIT) medium at finite temperatures. Allowing for…