ERA NANOSCI: Deterministic single quantum dot Nano-sources of Entangled Photons paiRs

• Applicant: Professor Dr. Tobias Kippenberg
• Subject Area: Condensed Matter Physics
• Term: from 2007 to 2011
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 40096159

• Final Report Year: 2012

Final Report Abstract

The objective of this proposal, which the Laboratory of the applicant joint, was to develop an efficient interface between semiconductor nanocavities containing quantum dots and the technique of tapered optical fiber coupling, that has been perfected for toroidal ultra high Q resonators by the applicant for a wide range of experiments, including microresonator based frequency comb generation and cavity optomechanical coupling, among others. The NanoSci-ERA project enabled the applicant and his research group to engage in a very close collaboration. The most important contribution of this project has been the development of tapered optical fiber coupling (used successfully so far for torold resonators) for planar III-V resonators. Such fiber coupling has before only been achieved using highly curved bent fibers, which lack the stability and low loss, required for single photon generation. Using this method, luminescence of quantum dots could be efficiently collected and measured. To achieve the efficient level of coupling required significant changes on the processing and sample design. With this platform, the applicant realized the unique potential to measure the - at that time totally unexplored - optomechanical properties of photonic crystals. While not envisioned in the original proposal, this represented a new and highly collaborative endeavour which we succeeded in realizing. Over the course of several years, the optomechanical properties of photonic crystal defect cavities were measured, simulated and an understanding gained in terms of the vacuum optomechanical coupling rate.

Publications

• "Optomechanical coupling in a two-dimensional photonic crystal defect cavity". Physical Review Letters 106, 203902 (2011)
  E. Gavartin, R. Braive, I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• ASME, Denver, USA, November 2011. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive. I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• CLEO Europe, Munich, Germany, May 2011. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive, I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• CLEO, Baltimore, USA, May 2011. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive, I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• Frontiers in Optics, San Jose, USA, October 2011. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive. I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• IQEC/CLEO Pacific Rim, Sydney, Australia, August/September 2011. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive. I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• META'12, Paris, France, April 2012. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive. I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip
  
• PECS-X, Santa Fe, USA, June 2012. "Optomechanical coupling in a two-dimensional photonic crystal defect cavity"
  E. Gavartin, R. Braive. I. Sagnes, O. Arcizet, A. Beveratos, T. J. Kippenberg, I. Robert-Philip