Abstract

Using an all-fiber source of pulsed twin beams, with the record intensity difference squeezing of 6.1±0.15  dB for fiber optical parametric amplifiers, we experimentally distribute the pulsed continuous variable (CV) quantum state over a long distance. After separating the signal and idler twin beams by 26 km single-mode fibers, the measured intensity difference noise is still below the shot noise limit by 2 dB. The result shows that the distribution process is only affected by the vacuum noise originated from the fiber transmission loss. The extra noise contributed by the acoustic wave Brillouin scattering and Raman scattering in 26 km transmission fibers has not been observed. The investigation is beneficial for studying long-distance CV quantum communication.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Generation of multi-mode squeezed vacuum using pulse pumped fiber optical parametric amplifiers

Nannan Liu, Yuhong Liu, Jiamin Li, Lei Yang, and Xiaoying Li
Opt. Express 24(3) 2125-2133 (2016)

Generation of continuous variable quantum entanglement using a fiber optical parametric amplifier

Xueshi Guo, Nannan Liu, Yuhong Liu, Xiaoying Li, and Z. Y. Ou
Opt. Lett. 41(3) 653-656 (2016)

Loss-tolerant quantum dense metrology with SU(1,1) interferometer

Yuhong Liu, Jiamin Li, Liang Cui, Nan Huo, Syed M. Assad, Xiaoying Li, and Z. Y. Ou
Opt. Express 26(21) 27705-27715 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription