Teleportation is a reality in 2025, well, at least for quantum computers. in 2025 in February The University of Oxford has demonstrated the teleportation of quantum data from one independent quantum processor to another through quantum entanglement, something that has never been done before. However, quantum entanglement is not a new idea for scientists, and it has been demonstrated before. The aim of the Oxford team’s experiment was to demonstrate a practical application, showing that the theory of teleporting logic or data between two quantum computers using entanglement was possible in reality.
Previous experiments by the team involved transferring a quantum algorithm (Grover’s algorithm) between two quantum processors by programming and connecting them to perform operations as a single unit. This achievement is the first case of teleportation between fully functioning quantum computers, rather than just individual particles. This could revolutionize the way we transmit data and the internet itself, creating super-powerful interconnected systems that will essentially become the quantum internet of the future. But before we get into that, what exactly is quantum computing and what does data teleportation really mean?
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What is a quantum computer and how does entanglement work?
A close-up of a quantum computer – Tomohiro Ohsumi/Getty Images
There are two distinct differences between a regular desktop or laptop computer and a quantum computer like New York’s, and it all comes down to how they store and process information. Conventional computers use bits that are either a series of 0 or 1, which is the basic binary system of all digital technology. Every app, video, or game is just a snippet of on and off. Quantum computers, on the other hand, use quantum bits (qubits) that can be both 0 and 1 at the same time, called superposition, until they are measured. Think of it as a coin spinning in the air that is both heads and tails before it lands on the surface.
The special thing about qubits is that they can be entangled, which means that their states are related. When the state of one is measured and it reads 0 or 1, it instantly dictates the state of the other, no matter the distance. For example, imagine two dice that always show the same number, even if one is in a different room. Computer entanglement allows a qubit from a first computer to become entangled with a qubit from a second computer, forming a connection that allows the quantum state to be recreated elsewhere.
Did teleportation really happen?
Teleportation portal rendering – Suppawat Subcharoensuk/Getty Images
During the process of quantum teleportation, scientists somehow measure the state of the first qubit. This measurement is combined with signals sent to the second computer, allowing the second qubit to acquire the same state. Although the information in the first qubit is technically destroyed and restored in the second, scientists still use the term “teleportation”. This is different from conventional wireless signals, which physically travel from one device to another, still carrying their 0s and 1s. These signals can be fast, but are limited by distance and obstacles. They can also be hacked and need to be paired or connected over a network.
In the Oxford teleportation demonstration, there was no physical transfer of material between computers. The first state of the qubit disappeared in one place and reappeared in another due to entanglement. It is important to note that even though no particle with the initial state of the qubit actually traveled, scientists still needed to measure the first qubit and send normal (classical) signals so that the second qubit could restore the same state. Best of all, if someone tries to eavesdrop or intercept the entangled connection, they will disrupt the quantum state and be detected. The successful teleportation of quantum data is a major scientific breakthrough because it could affect our future, paving the way for quantum computers to be 20,000 times faster than conventional computers, to seamlessly collaborate anywhere in the world, and to create more secure networks that would lay the foundation for a true quantum internet.
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Read the original article on SlashGear.