What's Happening?
Researchers from the University of Technology Sydney have demonstrated that quantum signals can be sent from Earth to a satellite, a method previously considered impractical. This breakthrough, detailed in the journal Physical Review Research, challenges
the traditional approach where quantum satellites send entangled particles to Earth. The new method leverages the advantages of ground-based equipment, which can generate stronger signals and is easier to maintain. This development could pave the way for future quantum networks that connect quantum computers via satellites.
Why It's Important?
The ability to send quantum signals from Earth to space could revolutionize secure communication networks. By utilizing ground-based equipment, which is more powerful and easier to service, this method could overcome current limitations in quantum satellite systems. This advancement is crucial for developing scalable quantum networks that could span continents, enhancing global communication security. The potential to connect quantum computers through satellites could lead to significant advancements in computing power and data processing capabilities.
What's Next?
The research team suggests that the feasibility of this method could be tested using drones or balloon-mounted receivers. This would serve as a preliminary step towards establishing large-scale quantum networks using small satellites in low Earth orbit. The success of these tests could lead to the development of a high-bandwidth quantum internet, transforming how data is transmitted and processed globally. The approach could also reduce costs and size requirements for satellite-based quantum communication systems.
