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UK scientists successfully combined two separate Quantum processorsPrepare the road a as the Internet And, potentially, quantum supercomputers.
Increase quantum bits (otherwise known as the Quebits) a The amount of computer It turned out to be complicated because quantum computers are “noisy” – they are sensitive to any interference of heat, movement or electromagnetism and fail to be much more likely than classic calculation bits.
The more quantum computer on the quantum, the more complex the system becomes and the greater the risk of deformation – the loss of quantum information – and the resources needed to prevent mistakes. That is why scientists focus on creating more reliable receipts against magnifying systems up to millions of receipts needed to sincerely A useful quantum computer;
In the study Published February 5th Scientists in Nature suggested that you work around this scaling problem by combining individual quantum processors using the current creation of fiber -optic cables, thus increasing the number of fragrances available.
This is an important step to demonstrate the implementation of the distributed quantum calculation (DQC), where quantum processors are combined together to make calculations. DQC would allow several quantum processors to work together to solve increasingly complex problems in much less time than would have needed classic supercomputers.
Scientists have described how they have connected two quantum processors – so -called Alice and Bob (not confused with quantum calculation company Alice and BOB) using a photonical network interface (optical fibers). Sending quantum algorithms through the connection of the photonical network allowed two quantum processors to share resources and act as one entity.
Distributed future calculation
By combining two such processors, scientists were able to convey photons along with quantum information and for the first time a quantum algorithm. Such algorithms are calculating functions that allow quantum computers to solve problems. They were shared by exploiting the phenomenon of quantum entangling between photons.
Quantum processors could also work with the test problem using the Gover’s search algorithm – a quantum algorithm to find a “needle in the haystack”; You are looking for some information in a large amount of unsorted data.
This breakthrough is the key to the problem of changing the quantum calculation scaling. Instead of one machine with millions of QUBIT, which is huge and heavy, the new technique allows you to count many smaller processors. Using small stuck ion receipts modules connected with optical cables, it allows you to get entangled in individual QPUS.
The additional benefits of connecting processors in the DQC system are easy maintenance as the modules can be improved or replaced without the rest of the system.
Because there were only 6.6 feet (2 meters) between them Units of processing (QPU), future tests of this technology will have to expand the distance of the activity to ensure that the connection remains stable too much distances. Quantum repeats that increase the range through which quantum information can be transmitted can also be included in future systems.
Adding more quantum processors would make even more evidence to make DQC a promising solution to quantum supercomputers. Like today’s supercomputers, there are hundreds of classic processors connected together, theoretically, it is possible to create a quantum supercomputer by linking quantum processors over long distances.
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As proof of the concept, the experiment proved that DQC is promising. This also creates the basics of a safe quantum internet that could provide a safer information transfer method, as quantum processors can be used to create a safe communication network in different locations.
In the report David LucasThe main researcher of the research team and the main scientist of the UK Quantum Counting and Modeling Center said the team “experiment shows that the network distributed quantum processing is possible in the light of current technology.”
However, Lucas acknowledged that a lot of work was needed before quantum computers for practical programs.
“Increasing quantum computers remains a huge technical challenge that is likely to require new physics insights and intense engineering efforts in the coming years,” he said.