Research conducted at Griffith University in Queensland, Australia, may lead to greatly improved security of information transfer over the internet.
In a paper published in the online journal Nature Communications, physicists from Griffith’s Centre for Quantum Dynamics demonstrate the potential for “quantum steering” to be used to enhance data security over long distances, discourage hackers and eavesdroppers and resolve issues of trust with communication devices.
“Quantum physics promises the possibility of absolutely secure information transfer, where your credit card details or other personal data sent over the internet could be completely isolated from hackers,” says project leader Professor Geoff Pryde.
“In an ideal world, such perfectly secure long distance communication between any two parties is simple. They could share strongly entangled quantum systems — such as particles of light called photons — to generate truly random and uncrackable codes.
“Unfortunately, in the real world the two parties cannot share sufficiently strong entanglement over long distances due to transmission and detection losses. As the photons travel through the communication network, some are lost, thus providing a loophole for outsiders to attack their code.”
A backup solution — and the focus of the Griffith research — is quantum steering, where a measurement made on one party’s quantum system changes, or steers, the system held by another.
Professor Pryde says that, despite being a weaker form of entanglement, quantum steering operates paradoxically to maintain communication security while tolerating greater real-world loss and removing the need for absolute trust in devices.
“Quantum entanglement is a wonderful resource for safe and secure communication, but you need to verify it is really there to be certain any eavesdroppers are kept out of the loop,” he says.
“Our new technique does so without requiring any trust in the communication devices and it should work in long distance scenarios where standard methods fail.”
Read more: Doing more with less: Steering a quantum path to improved internet security
The Latest on: Quantum steering
[google_news title=”” keyword=”Quantum steering” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Quantum steering
- Quantum Computers Newson April 30, 2024 at 5:00 pm
Scientists Test for Quantum Nature of Gravity May 2, 2024 — A new study reports on a deep new probe into the interface between the theories of gravity and quantum mechanics, using ultra-high ...
- Quantum mechanics: Definitions, axioms, and key concepts of quantum physicson April 29, 2024 at 2:49 pm
Quantum mechanics, or quantum physics, is the body of scientific laws that describe the wacky behavior of photons, electrons and the other subatomic particles that make up the universe. At the ...
- Quantum Computing Newson April 28, 2024 at 5:00 pm
Scientists Test for Quantum Nature of Gravity May 2, 2024 — A new study reports on a deep new probe into the interface between the theories of gravity and quantum mechanics, using ultra-high ...
- Light Brought 'To a Halt' in Quantum Breakthroughon April 26, 2024 at 10:16 am
Scientists have achieved the impossible-sounding feat of bringing light to a standstill, in a breakthrough that could pave the way for new lasers and quantum light sources. The trick was achieved ...
- Quantum Computers Can Now Run Powerful AI That Works like the Brainon April 21, 2024 at 5:00 pm
As remarkable as this AI design has already proved to be, what if you could run it on a quantum computer? A transformer’s superpower is its ability to discern which parts of its input are more ...
- Steering toward quantum simulation at scaleon April 21, 2024 at 5:00 pm
The model used quantum bits, or qubits ... That point separates a phase where the steering succeeds and where it fails." The farther the system moves out of equilibrium, the more likely classical ...
- The experimental demonstration of a verifiable blind quantum computing protocolon April 13, 2024 at 6:46 am
thus 'steering' the state of the network qubit into a state known exclusively to the client." The process through which the state of the quantum qubit is "steered" into a state only known to ...
via Bing News
