Park, Kwang-Kyoon Cho, Young-Wook Chough, Young-Tak Kim, Yoon-Ho 2024-01-19T23:01:46Z 2024-01-19T23:01:46Z 2021-09-03 2018-04-13 2160-3308 https://pubs.kist.re.kr/handle/201004/121478 We report an experimental demonstration of the nonclassical stationary light pulse (SLP) in a cold atomic ensemble. A single collective atomic excitation is created and heralded by detecting a Stokes photon in the spontaneous Raman scattering process. The heralded single atomic excitation is converted into a single stationary optical excitation or the single-photon SLP, whose effective group velocity is zero, effectively forming a trapped single-photon pulse within the cold atomic ensemble. The single-photon SLP is then released from the atomic ensemble as an anti-Stokes photon after a specified trapping time. The second-order correlation measurement between the Stokes and anti-Stokes photons reveals the nonclassical nature of the single-photon SLP. Our work paves the way toward quantum nonlinear optics without a cavity. English AMER PHYSICAL SOC ELECTROMAGNETICALLY INDUCED TRANSPARENCY PHOTON STORAGE OPTICS COMMUNICATION GAS Experimental Demonstration of Quantum Stationary Light Pulses in an Atomic Ensemble Article 10.1103/PhysRevX.8.021016 1 PHYSICAL REVIEW X, v.8, no.2 PHYSICAL REVIEW X 8 2 scie scopus 000429935800001 2-s2.0-85047345449 Physics, Multidisciplinary Physics Article ELECTROMAGNETICALLY INDUCED TRANSPARENCY PHOTON STORAGE OPTICS COMMUNICATION GAS