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.”
The Latest on: Quantum steering
via Google News
The Latest on: Quantum steering
- Chip-based device opens new doors for augmented reality and quantum computingon March 22, 2020 at 6:55 am
Using the new blue light OPAs, the researchers demonstrated beam steering over a 50-degree field ... new blue OPA could be useful for trapped ion quantum computers, which require lasers in the ...
- Optical phased array on chip promises to revolutionize autonomous navigationon March 20, 2020 at 12:54 pm
NEW YORK — While beam-steering systems have been used for many years for applications such as imaging ... These include compact solid-state lidar in autonomous vehicles, smaller and lighter augmented ...
- Chip-Based Device Opens New Doors for Augmented Reality and Quantum Computingon March 20, 2020 at 7:43 am
Using the new blue light OPAs, the researchers demonstrated beam steering over a 50-degree field of view ... computing to biology The new blue OPA could be useful for trapped ion quantum computers, ...
- Coronavirus: TV shows to watch if you’re trapped at homeon March 20, 2020 at 1:01 am
Whether you’re self-isolating or practising social distancing, it’s clear we’re all going to be spending a lot more time at home.
- Chip-based device opens new doors for augmented reality and quantum computingon March 19, 2020 at 1:55 pm
Using the new blue light OPAs, the researchers demonstrated beam steering over a 50-degree field of view ... Applications from computing to biology The new blue OPA could be useful for trapped ion ...
- Compact beam steering studies to revolutionize autonomous navigation, AR, neuroscienceon March 19, 2020 at 11:22 am
consuming very low power while performing 2-D beam steering over a wide field of view. Their results are a significant advance towards building scalable phased arrays containing thousands of active ...
- Compact beam steering studies to revolutionize autonomous navigation, AR, neuroscienceon March 19, 2020 at 10:18 am
While beam steering systems have been used for many ... large-scale trapped-ion quantum computer to address ion qubits, and optogenetics, an emerging research field that uses light and genetic ...
- Plasmonic nanostar photocathodes for optically-controlled directional currentson March 13, 2020 at 3:15 am
Photocurrent control in nanoscale systems offers opportunities for nanoelectronic devices and ultrafast imaging applications. Here, the authors show by means of angle-resolved two-dimensional velocity ...
- Pakistan's customs dept to give maximum import, export facilitieson March 12, 2020 at 8:34 pm
he said that Pakistan customs is the lead agency for implementation on it under the supervision of a high-level steering committee. “The NSW is a quantum jump from the current silo and paper-based ...
- Michigan’s Quantum Signal On The Hunt For More Engineerson March 5, 2020 at 8:52 am
Since being acquired by Ford in mid-2019, Quantum Signal AI has been busy developing simulation tools to test all aspects of its upcoming automated driving platform ...
via Bing News