| Autor: |
Nitsche, Wolfgang H., Kim, Na Young, Roumpos, Georgios, Schneider, Christian, Kamp, Martin, Hoefling, Sven, Forchel, Alfred, Yamamoto, Yoshihisa |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Phys.Rev.B 90 (2014) 205430 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.90.205430 |
| Popis: |
We observe quasi-long range coherence in a two-dimensional condensate of exciton-polaritons. Our measurements are the first to confirm that the spatial correlation algebraically decays with a slow power-law, whose exponent quantitatively behaves as predicted by the Berezinskii-Kosterlitz-Thouless theory. The exciton-polaritons are created by non-resonant optical pumping of a micro-cavity sample with embedded GaAs quantum-wells at liquid helium temperature. Michelson interference is used to measure the coherence of the photons emitted by decaying exciton-polaritons. |
| Databáze: |
arXiv |
| Externí odkaz: |
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