NASA scientists achieve long-distance 'quantum teleportation' over 27 miles for the first time – paving the way for unhackable networks that transfer data faster than the speed of light

From: Turritopsis Dohrnii Teo En Ming
Date: Wed Dec 23 2020 - 04:03:29 EST

Subject: NASA scientists achieve long-distance 'quantum teleportation' over 27 miles for the first time – paving the way for unhackable networks that transfer data faster than the speed of light

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News Article: NASA scientists achieve long-distance 'quantum teleportation' over 27 miles for the first time – paving the way for unhackable networks that transfer data faster than the speed of light


Date Published: 22 December 2020


Publisher: MailOnline UK


- Scientists built a 27-mile long prototype quantum internet in the US
- They successfully used quantum entanglement to teleport signals instantly
- The phenomenon sees qubits, the quantum equivalent of computer bits, pair up and respond instantly

Scientists have demonstrated long-distance 'quantum teleportation' – the instant transfer of units of quantum information known as qubits – for the first time.

The qubits were transferred faster than the speed of light over a distance of 27 miles, laying the foundations for a quantum internet service, which could one day revolutionise computing.

Quantum communication systems are faster and more secure than regular networks because they use photons rather than computer code, which can be hacked.

But their development relies on cutting-edge scientific theory which transforms our understanding of how computers work.

In a quantum internet, information stored in qubits (the quantum equivalent of computer bits) is shuttled, or 'teleported', over long distances through entanglement.

Entanglement is a phenomenon whereby two particles are linked in such a way that information shared with one is shared with the other at exactly the same time.

This means that the quantum state of each particle is dependent on the state of the other – even when they are separated by a large distance.

Quantum teleportation, therefore, is the transfer of quantum states from one location to the other.

However, it is highly sensitive to environmental interference that can easily disrupt the quality or 'fidelity' of teleportation, so proving the theory in practice has been technologically challenging.

In their latest experiment, researchers from Caltech, NASA, and Fermilab (Fermi National Accelerator Laboratory) built a unique system between two labs separated by 27 miles (44km).

The system comprises three nodes which interact with one another to trigger a sequence of qubits, which pass a signal from one place to the other instantly.

The 'teleportation' is instant, occurring faster than the speed of light, and the researchers reported a fidelity of more than 90 percent, according to the new study, published in PRX Quantum.

Fidelity is used to measure how close the resulting qubit signal is to the original message that was sent.

'This high fidelity is important especially in the case of quantum networks designed to connect advanced quantum devices, including quantum sensors,' explains Professor Maria Spiropulu from Caltech.

The findings of the project are crucial to hopes of a future quantum internet as well as pushing the boundaries of what scientists known about the quantum realm.

Although the technology is yet to reach the point of being rolled out beyond sophisticated tests such as this, there are already plans for how policy makers will employ the technology.

For example, the US Department of Energy hopes to erect a quantum network between its laboratories across the states.

The power of a quantum computer running on quantum internet will likely exceed the speeds of the world's current most sophisticated supercomputers by around 100 trillion times.

'People on social media are asking if they should sign up for a quantum internet provider (jokingly of course),' Professor Spiropulu told Motherboard.

'We need (a lot) more R&D work.'


In quantum physics, entangled particles remain connected so that actions performed by one affects the behaviour of the other, even if they are separated by huge distances.

This means if you measure, 'up' for the spin of one photon from an entangled pair, the spin of the other, measured an instant later, will be 'down' - even if the two are on opposite sides of the world.

Entanglement takes place when a part of particles interact physically.

For instance, a laser beam fired through a certain type of crystal can cause individual light particles to be split into pairs of entangled photons.

The theory that so riled Einstein is also referred to as 'spooky action at a distance'.

Einstein wasn't happy with theory, because it suggested that information could travel faster than light.

Mr. Turritopsis Dohrnii Teo En Ming, 42 years old as of 23rd December 2020 Wednesday, is a TARGETED INDIVIDUAL (TI) living in Singapore. He is an IT Consultant with a System Integrator (SI)/computer firm in Singapore. He is an IT enthusiast.


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Singaporean Targeted Individual Mr. Turritopsis Dohrnii Teo En Ming's Academic
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