Shanghai Lub Koom Haum Ntawm Optics Thiab Precision Machinery Ua Kev Txhim Kho hauv Synergistic Exciton Polarization Exciton Bose Einstein Condensation

Tsis ntev los no, pab neeg tshawb fawb Dong Hongxing thiab tus kws tshawb fawb Zhang Long los ntawm Infrared Optical Materials Research Center, Department of Advanced Laser thiab Optoelectronic Functional Materials, Shanghai Institute of Optics Precision Machinery, Suav Academy ntawm Sciences (SIPM), koom tes nrog East China Normal University. (ECNU), tau daws cov txheej txheem kinetic thiab nws lub cev lub cev ntawm cov theem hloov pauv ntawm superfluorescence mus rau synergetically exciton-polarized exciton coalescence nyob rau hauv nws raws li chalcogenide quantum dots nyias-zaj duab xis system, nrog rau cov kev tshawb fawb muaj feem xyuam tau luam tawm raws li cov kev tshawb fawb muaj feem xyuam. Cov txiaj ntsig tau luam tawm hauv phau ntawv xov xwm "Kev Saib Xyuas Kev Hloov ntawm Superfluorescence rau Polariton Condensation hauv CsPbBr3 Quantum Dots Film". -Science & Applications.
Ib tug loj tus naj npawb ntawm dipoles yog spontaneously synchronized los ntawm lub tshuab nqus tsev teb los tsim ib tug macroscopic dipole lub sij hawm thiab tsim ib tug luv luv thiab khaus tawg ntawm lub teeb, lub thiaj li hu ua superfluorescence. Hyperfluorescence yog lub platform zoo tshaj plaws los kawm txog ntau lub cev kev sib raug zoo hauv exciton systems thiab tsim kom muaj lub teeb ci quantum thiab ultrafast optical technologies. Lub caij no, cov yam ntxwv ntawm kev koom tes excitons nrog ntau dua vibronic siv yog tsim nyog rau txoj kev kawm ntawm nonlinear zog ntawm kev koom tes excitons, thiab nws yog ib qho yooj yim kom paub qhov coalescence ntawm kev koom tes exciton polarized excitons, uas yuav pab tau kom nthuav daim ntaub ntawv nyob rau hauv lub teb ntawm quantum logic. rooj vag, topological xeev excitations, thiab lwm yam. Tam sim no, tseem muaj qhov sib txawv hauv kev kawm txog kev tswj hwm ntawm kev sib txuas ntawm lub zog ntawm lub teeb thiab kev koom tes hauv xeev thiab cov txheej txheem hloov pauv ntawm hyperfluorescence mus rau coexciton polarized exciton condensation. Kev paub txog kev sib txuas ntawm lub zog sib txuas ntawm lub teeb thiab cov teeb meem kev sib koom ua ke raws li quantum dot system thiab daws qhov kev hloov pauv ntawm ultrafast tswj los ntawm kab noj hniav qhov chaw kho qhov muag yog qhov tseem ceeb rau kev txhim kho ntxiv thiab kev siv cov khoom siv quantum.
Raws li qhov no, cov kws tshawb fawb tau thov kom ua kom pom cov kab noj hniav sab nraud kom kho qhov sib txuas lub zog ntawm lub teeb thiab kev sib koom tes excitons, raws li kev faib tawm Bragg reflector ib nrab kab noj hniav ntawm cov qauv ntawm chalcogenide quantum dots nyias zaj duab xis ua pov thawj muaj zog sib txuas tshwm sim ntawm kev koom tes. excitons thiab Bragg hom, Rabi cleavage ntawm 21.6 meV. Tsis tas li ntawd, nyob rau hauv lub chav kawm ntawm txoj kev tshawb no, qhov tshwm sim ntawm coalescence ntawm kev koom tes excitons polarization exciton kuj tau pom. Cov kev sib raug zoo ntawm excitons nthuav tawm qhov kev sib txuas tseem ceeb, qhov tshwm sim feem ntau yog vim qhov sib txawv ntawm theem synchronization tshwm sim los ntawm cov nyhuv synergistic induced excitons, uas ua rau tsim cov macroscopic dipole lub sij hawm nrog cov lus qhia polarization zoo ib yam. Lub realization ntawm tus tshiab quasiparticle Bose Einstein condensation muab tshiab possibilities rau txoj kev loj hlob ntawm ultra-luv tunable lasers. Tsis tas li ntawd, ob qho khoom siv kho qhov muag ntawm qhov sib xyaw ua ke exciton polarized exciton condensation txhawb nqa cov kev siv ntawm synergistic exciton polarized exciton condensation hauv quantum simulations, unconventional coherent light sources, thiab all-optical polarization logic devices.
Txoj haujlwm no tau txais kev txhawb nqa los ntawm National Natural Science Foundation ntawm Tuam Tshoj, Shanghai Young Top Talent Program, Shanghai Leading Talent Program thiab lwm yam haujlwm.

Fig. 1 (a) Schematic qauv ntawm quantum dot zaj duab xis ntawm DBR substrate; (b) hyperfluorescence spectra ntawm quantum dot zaj duab xis ntawm silicon substrate thiab reflectance spectra ntawm DBR substrate; (c) Lub kaum ntse daws teeb meem photoluminescence spectra ntawm quantum dot superlattice nyias zaj duab xis ntawm DBR; (d) Kev suav ntawm qhov ceev ntawm lub xeev ntawm polarized exciton piv rau lub kaum ntse ntse thiab wavelength; (e) thib ob-order derivative zajlus ntawm Fig. (c); thiab (f) Angle-resolved reflectance spectra ntawm DBR.