Getting closer to building a quantum computer

Nancy Forbes, Seth Lloyd

Susan M. Reiss

Jack D. Hidary

Jelena Stajic

Quantum Information Quantum information scientists are getting closer to building a quantum computer that can perform calculations that a classical computer cannot. It has been estimated that such a computer would need around 50 qubits, but scaling up existing architectures to this number is tricky. Neill et al. explore how increasing the number of qubits from five to nine affects the quality of the output of their superconducting qubit device. If, as the number of qubits grows further, the error continues to increase at the same rate, a quantum computer with about 60 qubits and reasonable fidelity might be achievable with current technologies. Science , this issue p. [195][1] [1]: /lookup/doi/10.1126/science.aao4309

V. Martin, Momtchil Peev, J.P. Brito +16 more

Quantum Key Distribution technology is maturing quickly. The systems that were once closer to laboratory devices and focused on the single link are nowadays commercial products, and the companies that build them are ramping up production. Now there is a need to go beyond the single link and start thinking in getting closer to the network. In this talk we will explore, from a standardization point of view, the network architectures available and the gaps that need to be closed to support the creation of large-scale quantum secure networks, like the planned European Quantum Communications Infrastructure.