By Nermeen Nabil Khear 
Performing complex algorithms on quantum computers will eventually require access to tens of thousands of hardware qubits. For most of the technologies being developed, this creates a problem: It’s difficult to create hardware that can hold that many qubits. As a result, people are looking at various ideas of how we might link processors together in order to have them function as a single computational unit (a challenge that has obviously been solved for classical computers).
In today’s issue of Nature, a team at Oxford University describes using quantum teleportation to link two pieces of quantum hardware that were located about 2 meters apart, meaning they could easily have been in different rooms entirely. Once linked, the two pieces of hardware could be treated as a single quantum computer, allowing simple algorithms to be performed that involved operations on both sides of the 2-meter gap.
Quantum teleportation is… different
Our idea of teleportation has been heavily shaped by Star Trek, where people disappear from one location while simultaneously appearing elsewhere. Quantum teleportation doesn’t work like that. Instead, you need to pre-position quantum objects at both the source and receiving ends of the teleport and entangle them. Once that’s done, it’s possible to perform a series of actions that force the recipient to adopt the quantum state of the source. The process of performing this teleportation involves a measurement of the source object, which destroys its quantum state even as it appears at the distant site, so it does share that feature with the popular conception of teleportation.
This articles is written by : Nermeen Nabil Khear Abdelmalak
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