Details

Autor(en) / Beteiligte

• Sun, Jian
• Zhang, Xichang
• Qu, Weizhi
• Mikhailov, Eugeniy E
• Novikova, Irina
• Shen, Heng
• Xiao, Yanhong

Titel

Spatial Multiplexing of Squeezed Light by Coherence Diffusion

Ist Teil von

• Physical review letters, 2019-11, Vol.123 (20), p.203604-203604, Article 203604

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2019

Link zum Volltext

Quelle

PROLA

Beschreibungen/Notizen

• Spatially splitting nonclassical light beams is in principle prohibited due to noise contamination during beam splitting. We propose a platform based on thermal motion of atoms to realize spatial multiplexing of squeezed light. Light channels of separate spatial modes in an antirelaxation coated vapor cell share the same long-lived atomic coherence jointly created by all channels through the coherent diffusion of atoms, which in turn enhances the individual channel's nonlinear process responsible for light squeezing. Consequently, it behaves as squeezed light in one optical channel transferring to other distant channels even with laser powers below the threshold for squeezed light generation. An array of squeezed light beams is created with low laser power ∼ milliwatt. This approach holds great promise for applications in a multinode quantum network and quantum enhanced technologies such as quantum imaging and sensing.