Journal
PHYSICAL REVIEW A
Volume 90, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.90.033823
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Funding
- National Basic Research Program of China (973 Program) [2011CB921604]
- National Natural Science Foundation of China [11274118, 11004058, 11474095, 11129402, 11234003, 11204085]
- Innovation Program of the Shanghai Municipal Education Commission [13ZZ036]
- Fundamental Research Funds for the Central Universities
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In a quantum memory scheme with the Raman process, the read process encounters noise from four-wave mixing (FWM), which can destroy the nonclassical properties of the generated quantum fields. Here we demonstrate experimentally that the noise from FWM can be greatly suppressed by simply reducing the FWM transition channels with a circularly polarized read beam while at the same time retaining relatively high retrieval efficiency.
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