Tsis ntev los no, ib pab neeg coj los ntawm Prof. Jia Laitang, Prof. Xiao Liantuan thiab Prof. Mei Feng los ntawm lub koom haum ntawm Laser Spectroscopy ntawm Shanxi University tau ua qhov tseem ceeb hauv kev tshawb fawb ntawm cov xeev topological. Qhov kev tshawb fawb tshwm sim "Dynamical Detection ntawm Topological Spec ...
Tsis ntev los no, ib pab neeg coj los ntawm Prof. Jia Laitang, Prof. Xiao Liantuan thiab Prof. Mei Feng los ntawm lub koom haum ntawm Laser Spectroscopy, Shanxi University tau ua qhov tseem ceeb hauv kev kawm ntawm topological xeev. Cov txiaj ntsig tshawb fawb "Dynamical Detection of Topological Spectral Density" tau luam tawm hauv Cov Ntawv Tshawb Xyuas Lub Cev rau Lub Ib Hlis 17, 2012, uas tau ua tiav los ntawm Shanxi University, thiab Dr. Jiahui Zhang, tus kws kho mob ntawm lub koom haum ntawm Laser Spectroscopy, yog thawj zaug. tus sau ntawv. Dr. Zhang Jiahui yog thawj tus kws sau ntawv, Prof. Mei Feng yog tus kws sau ntawv, thiab Prof. Jia Laitang thiab Prof. Xiao Liantuan tau muab cov lus qhia tseem ceeb.
Topological xeev yog ib hom tshiab lub xeev txuam nrog topology, nrog ntuj topology-preserving robustness rau sab hauv sawv thiab poob thiab sab nraud perturbation ntawm lub system, thiab muaj ib tug tseem ceeb heev daim ntaub ntawv nyob rau hauv lub teb ntawm cov ntaub ntawv science, quantum ntaub ntawv thiab quantum precision ntsuas. . Ib lo lus nug tseem ceeb ntawm kev tshawb fawb yog yuav ua li cas txheeb xyuas cov teeb meem topological lub xeev cov ntaub ntawv. Lub xub ntiag los yog tsis muaj lub xeev topological ciam teb yog txoj hauv kev tseem ceeb los txheeb xyuas cov ntaub ntawv topological. Tam sim no, qhov kev nce qib thoob ntiaj teb tshiab tshaj plaws yog txhawm rau txheeb xyuas qhov muaj nyob ntawm thaj chaw topological ciam teb los ntawm kev soj ntsuam lub xeev qhov ntom ntom. Txawm li cas los xij, kev tshawb pom ntawm topological localized state density tseem yog ib qho teeb meem nyuaj, tshwj xeeb tshaj yog nyob rau hauv lub sij hawm uas tsis muaj qhov sib npaug ntawm cov txheej txheem topological.
(1-4) Schematic daim duab ntawm lub hauv paus ntsiab lus: Dynamical nrhiav kom tau ntawm equilibrium thiab nonequilibrium topological localized lub xeev densities.
(5-14) Daim ntawv thov piv txwv: non-equilibrium topological localized density of states txheeb xyuas nruab nrab thiab tsis yog nruab nrab siab dua-order topological xeev uas yog indistinguishable ntawm lub zog spectrum.
Thawj zaug, pab pawg tshawb fawb pom qhov sib luag thiab zoo nkauj lub cev sib txuas ntawm chiral quantum dynamics thiab Loschmidt echoes, piv txwv li, Loschmidt amplitude ntawm lub sijhawm t yog sib npaug rau qhov chaw ntawm chirality ntawm lub sijhawm t / 2. Siv qhov kev sib txuas ntawm lub cev no, pab pawg tau pom ntxiv tias chiral quantum dynamics tuaj yeem soj ntsuam ncaj qha rau qhov topological localized ntom ntawm cov xeev. Cov txheej txheem no muaj zog txaus los nthuav tawm ob qho tib si lub zog spectrum thiab cov khoom ntawm topological ntawm cov spatial faib ntawm topological ciam teb. Cov txheej txheem kuj yog universal thiab tuaj yeem siv tsis tau tsuas yog rau cov tshuab thev naus laus zis thev naus laus zis xwb tab sis kuj tseem ua rau lub sijhawm tsis sib xws ntawm cov txheej txheem topological. Pab neeg tshawb fawb pom tau hais tias qhov ntom ntawm cov xeev hauv cheeb tsam ntawm nonequilibrium topology tuaj yeem tshawb xyuas ncaj qha thiab nthuav tawm cov khoom tshwj xeeb ntawm lub xeev tsis muaj qhov sib npaug, suav nrog cov quasi-zog spectrum thiab topological hom ntawm periodic topology, uas muab ib tug tshiab txhais tau tias ntawm nonequilibrium topology soj ntsuam.
Qhov kev tshawb fawb no tau txais kev txhawb nqa los ntawm Kev Tshawb Fawb thiab Kev Txhim Kho Tseem Ceeb ntawm Ministry of Science thiab Technology, National Natural Science Foundation ntawm Tuam Tshoj, Lub Tuam Txhab Tseem Ceeb Kev Tsim Kho ntawm Shanxi Province "1331" Project, Lub Xeev Lub Chaw Haujlwm Tseem Ceeb ntawm Quantum Optics thiab Optical Quantum Cov cuab yeej siv, thiab Kev Sib Koom Tes Innovation Center rau Extreme Optics koom ua ke tsim los ntawm Ministry of Science thiab Technology ntawm Tuam Tshoj thiab Ministry of Science thiab Technology ntawm Cov Neeg Sawv Cev ntawm Tuam Tshoj.
