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quantum communication
Trends
- 1Quantum Computer Operates in Space for the First Time▼For The First Time, a Quantum Computer Has Operated in Space
A quantum computer has been operated in space for the first time, according to a report by ScienceAlert. The milestone suggests quantum computing technology can function in the harsh conditions of orbit, opening the door to space-based quantum research and potentially quantum communication networks between satellites. Details about the hardware involved and the mission responsible have not yet been widely reported.
- 2Quantum memory stores single photons for record time▼Quantum memory stores single photons for record time in major leap towards a quantum internet
Researchers report a quantum memory that has stored single photons for a record length of time, a result described as a major step towards building a quantum internet. Long-lived storage of individual light particles is a key requirement for quantum repeaters, the devices needed to send entangled signals across continental distances. The achievement is drawing attention as a milestone in quantum communication research.
- 3
Researchers at Nanjing University report an advance in quantum key distribution for networks serving three users simultaneously. The work reportedly raises the secure key rates achievable in such multi-user quantum networks, a step toward practical quantum-secured communications. Technical details of the method and its performance gains have drawn attention from the quantum information community.
- 4Quantum link runs alongside 400G Ethernet and 5G on same fiber●Quantum link shares deployed fiber with 400G Ethernet and 5G
A quantum communication link has been shown operating over fiber optic cable already carrying 400G Ethernet and 5G traffic, demonstrating that quantum networking can coexist with conventional high-capacity telecommunications on deployed infrastructure rather than requiring dedicated lines. This points to a cheaper path for integrating quantum-secure communications into existing networks.