IBM, Cisco to build quantum internet with linked quantum machines
What's the story
IBM and Cisco Systems have announced their plans to connect quantum computers over long distances. The ambitious project aims to demonstrate the feasibility of such networks by the end of the decade. If successful, this could be a major step toward creating a quantum internet, revolutionizing global connectivity. However, both companies have admitted that these networks will require technologies that are yet to be developed.
Technological potential
Quantum computers: A solution to complex problems
Quantum computers are capable of solving complex problems in physics, chemistry, and computer security—tasks that would take existing computers thousands of years. However, these machines can be error-prone and creating a reliable one is a challenge. IBM, Alphabet's Google, and other tech giants are working toward this goal. IBM hopes to have an operational quantum machine by 2029.
Technical hurdles
Cisco's lab and the challenge of information transfer
Earlier this year, Cisco opened a lab to explore how to connect quantum machines. The first hurdle is transferring information from these machines, which are housed in massive cryogenic tanks at extremely low temperatures. IBM has to figure out how to convert data in stationary "qubits" into "flying" qubits that travel as microwaves. These flying microwave qubits will then have to be converted into optical signals for transmission over fiber-optic cables between Cisco switches.
Technological advancement
Development of microwave-optical transducer technology
The transformation of flying microwave qubits into optical signals will require the development of a microwave-optical transducer. This technology is expected to be developed with the help of groups like the Superconducting Quantum Materials and Systems Center, led by Fermi National Accelerator Laboratory near Chicago. Along with this, Cisco and IBM also plan to publish open-source software to integrate all components into one system.
Joint effort
Collaborative approach to quantum computer networking
Vijoy Pandey, Cisco's senior vice president of Outshift innovation incubator, emphasized the collaborative nature of this project. He said, "We are looking at this end-to-end as a system ... rather than two discrete road maps." This joint approach gives them a better chance of success in their mission to connect quantum computers over long distances by the early 2030s.