[HTML][HTML] Temporally ultralong biphotons with a linewidth of 50 kHz

YS Wang, KB Li, CF Chang, TW Lin, JQ Li, SS Hsiao… - APL Photonics, 2022 - pubs.aip.org
We report the generation of biphotons, with a temporal full width at the half maximum
(FWHM) of 13.4±0.3 µs and a spectral FWHM of 50±1 kHz, via the process of spontaneous …

Complementarity of which-path information in induced and stimulated coherences via four-wave mixing process from warm Rb atomic ensemble

D Kim, J Park, C Baek, SK Lee, HS Moon - Optica Quantum, 2024 - opg.optica.org
Complementarity, a fundamental tenet of quantum optics, is indispensable for elucidating
the fundamental principles of quantum physics and advancing quantum information …

Violation of Bell Inequality by Four‐Photon Greenberger‐Horne‐Zeilinger State with a Phase from a Warm Atomic Ensemble

J Park, J Ryu, H Kim, HS Moon - Advanced Quantum …, 2023 - Wiley Online Library
Abstract A Greenberger–Horne–Zeilinger (GHZ) entangled state with a phase is crucial for
realizing desired multipartite quantum states for practical applications. Here, it is reported …

Direct generation of time-energy-entangled W triphotons in atomic vapor

K Li, J Wen, Y Cai, SV Ghamsari, C Li, F Li, Z Zhang… - Science …, 2024 - science.org
Entangled multiphoton sources are essential for both fundamental tests of quantum
foundations and building blocks of contemporary optical quantum technologies. While efforts …

Pure-state photon-pair source with a long coherence time for large-scale quantum information processing

B Li, YH Li, Y Cao, J Yin, CZ Peng - Physical Review Applied, 2023 - APS
The Hong-Ou-Mandel interference between independent photons plays a pivotal role in
large-scale quantum networks involving distant nodes. Photons need to work in a pure state …

Single and entangled photon pair generation using atomic vapors for quantum communication applications

S Achar, A Kundu, A Chilukoti… - Frontiers in Quantum …, 2024 - frontiersin.org
Significant progress has been achieved in leveraging atomic systems for the effective
operation of quantum networks, which are essential for secure and long-distance quantum …