ETRI successfully exchanged quantum information on daylight in a free-space quantum key distribution
The Electronics and Telecommunications Research Institute (ETRI) has reported a successful free-space quantum key distribution (QKD) in daylight with the self-developed polarization encoding chip for the first time. QKD is one of the most promising secure communication technologies, which encodes information into a single-photon, the smallest measurable unit of light. By using the quantum mechanical properties of the single-photon, quantum cryptography guarantees secure information exchange between the distant parties. The report is particularly worthy of attention in two points as follows.
First, ETRI’s free-space QKD system works successfully even during the daylight whereas most other systems have failed to operate properly due to substantial amount of noise photons from sunlight. By developing and adopting elaborate noise filtering technologies, ETRI’s QKD system achieved the secure key rate of 142.94 kbps with quantum bit error rate of 4.26% in daylight over the free-space distance of 275 m .
Second, ETRI’s QKD system is configured with the self-developed polarization encoding chip, which dramatically reduces the size of the system compared to conventional QKD systems. Miniaturizing key components is highly important to make QKD systems to be used for the secure communication solution of several applications requiring light-weight such as Unmanned Aircraft Vehicle (UAV) and automotive cars, whose security is one of the critical concerns. The chip-based QKD component of ETRI is considered as a core technology for the commercialization of QKD system in various fields.
ETRI is now applying their integrated-chip technologies to other optical components to realize miniaturized QKD transceiver modules. Also, ETRI is trying to conduct the free-space QKD experiments for the extended transmission distance in daylight.
The Latest on: Quantum key distribution
via Google News
The Latest on: Quantum key distribution
- Passively stable distribution of polarisation entanglement over 192 km of deployed optical fibreon January 10, 2020 at 3:19 am
Quantum key distribution (QKD) based on entangled photon pairs holds the potential for repeater-based quantum networks connecting clients over long distance. We demonstrate long-distance entanglement ...
- An 80 kg setup is the world's first portable quantum satellite communication stationon January 10, 2020 at 12:28 am
the team of researchers led by Ji-Gang Ren at the University of Science and Technology of China in Hefei used the portable station to perform quantum key distribution. In quantum key distribution, ...
- China has developed the world’s first mobile quantum satellite stationon January 9, 2020 at 12:37 pm
The team used the mobile ground station to perform quantum key distribution, a form of secure communication in which particles of light, called photons, are transmitted. It enables two parties to ...
- Quantum computing predictions for 2020on January 8, 2020 at 5:30 pm
The UK, as part of its own quantum boost, invested in building a quantum computer as well as some money in quantum key distribution. "But they are all hardware-related," he says. "We are still playing ...
- China Focus: China boosts basic research with systematic resolveon January 8, 2020 at 12:39 am
... scientific goals -- quantum key distribution, quantum entanglement distribution and quantum teleportation -- were achieved a year ahead of schedule. Pan Jianwei, lead scientist of QUESS, noted ...
- Inside the race to quantum-proof our vital infrastructureon January 6, 2020 at 12:09 am
Whereas post-quantum cryptography is based on maths, the other major area of research interest, quantum key distribution (QKD), is rooted in physics, specifically the behaviour of subatomic particles.
- Accelerating the communications highway with structured lighton January 5, 2020 at 4:39 am
With the communications element, this is undertaken between nodes, made possible through quantum key distribution protocols. The nodes are necessary in order to both generate and detect photons ...
- China is beating the US when it comes to quantum securityon December 12, 2019 at 10:46 am
It’s been six years since hackers linked with China breached the US Office of Personnel Management’s computer system and stole sensitive information about millions of federal employees and contractors ...
- 2-Day Event: The Future of Quantum Computing, Quantum Networking & Quantum Sensors (New York, United States - April 2-3, 2020)on December 11, 2019 at 3:45 am
Some quantum technologies are already earning money. According to the research division, Quantum Key Distribution (QKD), will reach revenues of around $140 million in 2020 and the market for Quantum ...
via Bing News