Those readers who are at their 70’s age life, may remember the movie “Insect”. The move was a fictional fantasy, showing the dreams of a scientist who was trying to transfer himself from east of USA coasts to the west. If you remember that movie that ended in a dramatical scene, now this article might be interested for you.
The following abstract is a re-publishing article, edited by Douglas Whitbread however the PIMI’s Editorial-Team has added some extra values to it by addition of further hyperlinks (shown in Bold) and extra images.
Thrilled researchers at the University of Oxford believe the impressive milestone will bring quantum computingcloser to large-scale practical use. That’s because they used a ‘photonic network interface’ to successfully link two separate quantum processors to form a single, fully connected quantum computer.
This, according to the universities, will help to tackle computational challenges previously out of reach. If powerful quantum technology is later rolled out successfully, the technology should be able to solve problems way beyond the capabilities of traditional computers.
The breakthrough essentially addresses the technology’s ‘scalability problem’. A quantum computer powerful enough to be industry-disrupting would have to be capable of processing millions of qubits, the basic unit of information. However, packing all these processors in a single device would require a machine of an immense size.
In this new approach, small quantum devices are linked together, enabling computations to be distributed across the network. In theory, there is no limit to the number of processors that could be in the network.
Although quantum teleportation of states has been achieved previously, this study is the first demonstration of quantum teleportation of logical gates (the minimum components of an algorithm) across a network link. According to the researchers, this could lay the groundwork for a future ‘quantum internet,’ where distant processors could form an ultra-secure network for communication, computation, and sensing.
The concept is similar to how traditional supercomputers work. These are made up of smaller computers linked together to achieve capabilities that are greater than those of each separate unit. This strategy circumvents many of the engineering obstacles associated with packing ever larger numbers of qubits into a single device, while preserving the delicate quantum properties needed for accurate and robust computations.
Study lead Dougal Main (Department of Physics) said: “Previous demonstrations of quantum teleportation have focused on transferring quantum states between physically separated systems. In our study, we use quantum teleportation to create interactions between these distant systems.
“By carefully tailoring these interactions, we can perform logical quantum gates – the fundamental operations of quantum computing – between qubits housed in separate quantum computers. This breakthrough enables us to effectively ‘wire together’ distinct quantum processors into a single, fully-connected quantum computer.”
The researchers demonstrated the effectiveness of the method by executing Grover’s search algorithm. This quantum method searches for a particular item in a large, unstructured dataset much faster than a regular computer can, using the quantum phenomena of superposition and entanglement to explore many possibilities in parallel.
Its successful demonstration underscores how a distributed approach can extend quantum capabilities beyond the limits of a single device, setting the stage for scalable, high-performance quantum computers powerful enough to run calculations in hours that today’s supercomputers would take many years to solve.
computing closer to large-scale practical use. That’s because they used a ‘photonic network interface’ to successfully link two separate quantum processors to form a single, fully connected quantum computer.
quantum teleportation of logical gates (the minimum components of an algorithm) across a network link. According to the researchers, this could lay the groundwork for a future ‘quantum internet,’ where distant processors could form an ultra-secure network for communication, computation, and sensing.
Its successful demonstration underscores how a distributed approach can extend quantum capabilities beyond the limits of a single device, setting the stage for scalable, high-performance quantum computers powerful enough to run calculations in hours that today’s supercomputers would take many years to solve.
