期刊
PHYSICAL REVIEW LETTERS
卷 129, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.057402
关键词
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资金
- National Key R&D Program of China [2018YFA0306303, 2018YFA0306304, 2021YFA1200803]
- National Natural Science Foundation of China [62071301, 92050105, 91950 201, 11674069, 11834004, 12174111, 11574205]
- Science and Technology Commission of Shanghai Municipality, China [22ZR1419700, 19ZR1473900]
- Fundamental Research Funds for the Central Universities [YBNLTS2022-007, 207202 00074]
- Interdisciplinary program of Wuhan National High Magnetic Field Center [WHMFC202111]
- NYU- ECNU Institute of Physics at NYU Shanghai
- Joint Physics Research Institute Challenge Grant
- Science and Technology Commission of Shanghai Municipality [19XD1423000, 22ZR1444600]
- NYU Shanghai Boost Fund
- China Foreign Experts Program [G2021013002L]
- NYU Shanghai Major -Grants Seed Fund
- Shanghai Pujiang Program [21PJ1403000]
- Joint Physics Research Institute Challenge Grant of the NYU-ECNU Institute of Physics at NYU Shanghai
In this paper, a room temperature ultrafast polaritonic switch is realized, where the population of Bose-Einstein condensate can be depleted and revived using an ultrashort optical control pulse. The erasure and revival of the polariton condensates can be visualized using femtosecond angle-resolved spectroscopic imaging technique.
Exciton polaritons have shown great potential for applications such as low-threshold lasing, quantum simulation, and dissipation-free circuits. In this paper, we realize a room temperature ultrafast polaritonic switch where the Bose-Einstein condensate population can be depleted at the hundred femtosecond timescale with high extinction ratios. This is achieved by applying an ultrashort optical control pulse, inducing parametric scattering within the photon part of the polariton condensate via a four-wave mixing process. Using a femtosecond angle-resolved spectroscopic imaging technique, the erasure and revival of the polariton condensates can be visualized. The condensate depletion and revival are well modeled by an open-dissipative Gross-Pitaevskii equation including parametric scattering process. This pushes the speed frontier of all-optical controlled polaritonic switches at room temperature towards the THz regime.
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