**Maths breakthrough ups efficiency of teleportation**

*Physicists have developed mathematical protocols which would enable more efficient teleporting of information using quantum physics.*

Teleportation is a key function necessary for development of technologies like quantum computing and relies heavily on entanglement — the ability of physically separated particles to function as connected systems.

The protocols are able to send qubits (quantum units of information) either in sequence or as part of a larger package.

"The first protocol consists of sequentially teleporting states, and the second teleports them in a bulk," said Sergii Strelchuk of the Department of Applied Mathematics and Theoretical Physics at the University of Cambridge, who led the research.

"We have also found a generalised teleportation technique which we hope will find applications in areas such as quantum computation."

While the research is currently purely theoretical, the protocols are an improvement on previous methods for using entanglement as they do not require error correction once the qubits are received and they prevent the entangled state being destroyed after a single use.

"Entanglement can be thought of as the fuel, which powers teleportation," said Strelchuk. "Our protocol is more fuel efficient, able to use entanglement thriftily while eliminating the need for error correction."

Image: Kevin Rawlings / CC BY 2.0