Quantum memory is an essential element for long distance quantum communication and photonics quantum computation protocols. The practical implementation of such protocols requires an efficient quantum memory with long coherence time. Here, we report a highly efficient coherent optical memory via the gradient echo memory (GEM) technique in cold atoms. The efficiency is as high as 87% with the e-1 coherence time of 1 ms. The ability of quantum storage is verified using heterodyne tomography of small coherent states, showing that our system performs in the quantum regime.
|Title of host publication||2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||2|
|Publication status||Published - 2017 Oct 25|
|Event||2017 Conference on Lasers and Electro-Optics, CLEO 2017 - San Jose, United States|
Duration: 2017 May 14 → 2017 May 19
|Name||2017 Conference on Lasers and Electro-Optics, CLEO 2017 - Proceedings|
|Other||2017 Conference on Lasers and Electro-Optics, CLEO 2017|
|Period||17/5/14 → 17/5/19|
Bibliographical notePublisher Copyright:
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Electronic, Optical and Magnetic Materials