Document Type
Article
Department/Program
Physics
Journal Title
Physical Review Letters
Pub Date
11-2019
Volume
123
Issue
20
Abstract
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.
Recommended Citation
Sun, Jian; (...); Mikhailov, Eugeniy E.; Novikova, Irina; and et al., Spatial Multiplexing of Squeezed Light by Coherence Diffusion (2019). Physical Review Letters, 123(20).
https://doi.org/10.1103/PhysRevLett.123.203604
DOI
https://doi.org/10.1103/PhysRevLett.123.203604
Publisher Statement
This work is made available for educational and personal use only. Copyright is credited to the authors. Any other uses should be directed to the publisher.
