2014 Fiscal Year Annual Research Report
Generation of negative Wigner function light using using exciton-polariton condensates
| Project/Area Number |
26790061
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| Research Institution | National Institute of Informatics |
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Principal Investigator |
BYRNES TIMOTHY 国立情報学研究所, 情報学プリンシプル研究系, 助教 (50597698)
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| Project Period (FY) |
2014-04-01 – 2015-03-31
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| Keywords | exciton-polariton / Bose-Einstein condensate / quantum information / non-Gaussian / light source |
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| Outline of Annual Research Achievements |
The main aim of the proposal was to investigate using exciton-polariton condensates as a source of non-Gaussian light. Specifically, there were 3 sub-aims that were targeted: (I) Exploration of parameter space and optimization of model parameters (II) Simplification of the principle of the previous work (III) Finding applications of non-Gaussian light from polaritons.
This was originally planned as a two-year project, with aims (I) and (II) being completed in the first year, and aim (III) being completed in the second year. As of January 2015, I have now relocated to New York University's Shanghai campus in China, hence I terminated the project at the end of the first year. We have completed aims (I) and (II) and refined our scheme for producing non-Gaussian light. Aim (III) was not completed, and requires more work to complete that aspect of the project.
In our previous scheme, two lasers were necessary to generate the non-Gaussian light. One for creating the exciton-polaritons in the first place, and another to fix the phase to avoid phase diffusion -- this completely destroys the effect that we are trying to create. We were successful in reducing this to a single laser, which not only simplifies the experimental setup, but makes the generation process much more straightforward. However, a phase fixing mechanism is still necessary, which is accomplished by another means, by feeding back a homodyne current. We found that this gives much stronger non-Gaussian light than our previous scheme, improving the performance greatly.
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[Presentation] Quantum Information with Bose-Einstein Condensates2014
Author(s)
Andreas M. D. Thomasen, Sandrine Idlas, Ebubechukwu Ilo-Okeke, Danny Rosseau, Shi Wang, Luis Mario Domenzain, Gary Forster, Joan Vazquez Molina, Sergi Ortiz Rodriguez, Henry Semenenko, Tim Byrnes,
Organizer
NTT Science Plaza
Place of Presentation
Tokyo
Year and Date
2014-11-24 – 2014-11-24
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