Optical noise in a free-space quantum communications link from natural and nuclear disturbed environments*
Journal Article
·
· New Journal of Physics
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Satellite communications at radio frequencies can experience a ‘blackout’ period following the atmospheric detonation of a nuclear weapon. The wavelengths used for free-space quantum communications will not incur the same ‘blackout’ effects from a nuclear detonation, but the optical systems will suffer from a phenomenon called redout. Redout occurs in an optical detector when ambient light scatters into the optical receiver, causing elevated background photon counts in the detector such that background noise overwhelms the signal. In this work, the duration of the redout effect is quantified from a nuclear disturbed environment on a ground-to-space quantum optical link. In addition, we comment on various techniques for reducing ambient and nuclear disturbed background counts in a quantum free-space optical link. For low-altitude nuclear detonations (i.e., under 50 km), the maximum interference time will be less than 1 min. Implementing a telescope, timing gate, and wavelength filter to the detector can reduce the background counts in the detector significantly. Aerosol levels and ground albedo are major contributors to background noise in a ground-to-satellite quantum channel, and ground station location should factor in both variables.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- Defense Threat Reduction Agency (DTRA); USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1875356
- Journal Information:
- New Journal of Physics, Journal Name: New Journal of Physics Journal Issue: 6 Vol. 24; ISSN 1367-2630
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of a nuclear disturbed environment on a quantum free space optical link
Turbulent single-photon propagation in the Canary optical link
Space-based quantum networking in the presence of a nuclear disturbed environment
Journal Article
·
Sun Aug 08 20:00:00 EDT 2021
· Optics Express
·
OSTI ID:1813188
Turbulent single-photon propagation in the Canary optical link
Journal Article
·
Wed Dec 03 23:00:00 EST 2014
· AIP Conference Proceedings
·
OSTI ID:22390667
Space-based quantum networking in the presence of a nuclear disturbed environment
Journal Article
·
Thu May 04 20:00:00 EDT 2023
· Applied Optics
·
OSTI ID:1974327