Abstract
Generation of multimode quantum states has drawn much attention recently due to its importance for both fundamental science and the future development of quantum technologies. Here, by using a four-wave mixing process with a conical pump beam, we have experimentally observed about -3.8 dB of intensity-difference squeezing between a single-axial probe beam and a conical conjugate beam. The multi-spatial-mode nature of the generated quantum-correlated beams has been shown by comparing the variation tendencies of the intensity-difference noise of the probe and conjugate beams under global attenuation and local cutting attenuation. Due to its compactness, phase-insensitive nature, and easy scalability, our scheme may find potential applications in quantum imaging, quantum information processing, and quantum metrology.
| Original language | English |
|---|---|
| Pages (from-to) | 1201-1204 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 42 |
| Issue number | 7 |
| DOIs | |
| State | Published - Apr 1 2017 |
| Externally published | Yes |
Funding
National Natural Science Foundation of China (NSFC) (91436211, 11374104, 10974057); Program for New Century Excellent Talents in University (NCET) (NCET-10-0383); Shu Guang project (11SG26); Shanghai Pujiang Program (09PJ1404400); National Basic Research Program of China (2016YFA0302103); SRFDP (20130076110011); Program of Introducing Talents of Discipline to Universities (B12024); Natural Science Foundation of Shanghai (17ZR1442900); Program of State Key Laboratory of Advanced 207 Optical Communication Systems and Networks (2016GZKF0JT003).