My research

I am doing physics research because I am curious about how things in nature work. If you are curious about my work, you can have a look at my publication or presentation list, or at my group web page

Publication List

"Vortex–antivortex pair dynamics in an exciton–polariton condensate"
M. D. Fraser, G. Roumpos and Y. Yamamoto
New J. Phys. 11 113048 (2009)

"Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light"
Georgios Roumpos, Chih-Wei Lai, T. C. H. Liew, Yuri G. Rubo, A. V. Kavokin, and Yoshihisa Yamamoto
Phys. Rev. B 79, 195310 (2009), or arXiv:0807.4964v2 [cond-mat.mes-hall]

"New field-induced spin density wave phenomena from the Pauli terms in excitonic insulators"
A. Aperis, M. Georgiou, G. Roumpos, S. Tsonis, G. Varelogiannis and P. B. Littlewood
EPL, 83 (2008) 67008

"Observation of Bogoliubov excitations in exciton-polariton condensates"
S. Utsunomiya, L. Tian, G. Roumpos, C. W. Lai, N. Kumada, T. Fujisawa, M. Kuwata-Gonokami, A. Löffler, S. Höfling, A. Forchel & Y. Yamamoto
Nature Physics 4, 700 - 705 (2008)

"GaAs microcavity exciton-polaritons in a trap"
Na Young Kim, Chih-Wei Lai, Shoko Utsunomiya, Georgios Roumpos, Michael Fraser, Hui Deng, Tim Byrnes, Patrik Recher, Norio Kumada, Toshimasa Fujisawa, and Yoshihisa Yamamoto
Phys. Stat. Sol. (b) 245, 1076 (2008), or arXiv:0805.4673v1

"Coherent zero-state and pi-state in an exciton–polariton condensate array"
C. W. Lai, N. Y. Kim, S. Utsunomiya, G. Roumpos, H. Deng, M. D. Fraser, T. Byrnes, P. Recher, N. Kumada, T. Fujisawa and Y. Yamamoto
Nature 450, 529-532 (22 November 2007)

"Quantum simulation of spin ordering with nuclear spins in a solid-state lattice"
Georgios Roumpos, Cyrus P. Master and Yoshihisa Yamamoto
Phys. Rev. B 75, 094415 (2007), or arXiv:quant-ph/0611218v2

Presentation List

"Single vortex-antivortex pair in an exciton polariton condensate"
Georgios Roumpos, Sven Hoefling, Alfred Forchel, and Yoshihisa Yamamoto
2009 APS March Meeting, http://meetings.aps.org/Meeting/MAR09/Event/95142

"Signature of the Microcavity Exciton Polariton Relaxation Mechanism in the Polarization of Emitted Light"
Georgios Roumpos, Chih-Wei Lai, T. C. H. Liew, Yuri G. Rubo, A. V. Kavokin, Yoshihisa Yamamoto
Frontiers in Optics (FiO) 2008/Laser Science (LS) XXIV

"First and second order coherence of exciton-polariton condensates"
G. Roumpos, C. W. Lai, A. Forchel, and Y. Yamamoto
2008 APS March Meeting (Poster session), http://meetings.aps.org/Meeting/MAR08/Event/82252

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