Quantum memory is an essential element for long distance quantum communi- cation 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||CLEO|
|Subtitle of host publication||QELS_Fundamental Science, CLEO_QELS 2017|
|Publisher||OSA - The Optical Society|
|Publication status||Published - 2017|
|Event||CLEO: QELS_Fundamental Science, CLEO_QELS 2017 - San Jose, United States|
Duration: 2017 May 14 → 2017 May 19
|Name||Optics InfoBase Conference Papers|
|Volume||Part F42-CLEO_QELS 2017|
|Other||CLEO: QELS_Fundamental Science, CLEO_QELS 2017|
|Period||17/5/14 → 17/5/19|
Bibliographical notePublisher Copyright:
© OSA 2017.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials