High-storage efficiency EIT-based optical memory

Yi Hsin Chen, Meng Jung Lee, I. Chung Wang, Shengwang Du, Yong-Fan Chen, Ying Cheng Chen, Ite A. Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A high-storage efficiency and long-live quantum memory for photons is an essential component for the information processing in long-distance quantum communication and optical quantum computation. We demonstrated a 78% storage efficiency (SE) of coherent light pulses with a cold atomic medium based on the effect of electromagnetically induced transparency (EIT). We also obtained a large fractional delay of 74 at 50% SE, which is the best record to date. The measured fidelity of the memory is better than 90%. The results suggest the EIT light-matter interface can be readily applied to single-photon quantum states. Our work greatly advances the technology of EIT-based quantum memory for the practical quantum information applications.

Original languageEnglish
Title of host publicationAdvances in Slow and Fast Light VII
ISBN (Print)9780819499110
Publication statusPublished - 2014
EventAdvances in Slow and Fast Light VII - San Francisco, CA, United States
Duration: 2014 Feb 22014 Feb 5


OtherAdvances in Slow and Fast Light VII
Country/TerritoryUnited States
CitySan Francisco, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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