Researchers have taken a big step towards securing information against hacking. They have succeeded in using quantum encryption to securely transfer information 100 kilometers via fiber optic cable -- roughly equivalent to the distance between Oxford and London.
Continuous Variable Quantum Key Distribution .
"We have achieved a wide range of improvements, especially regarding the loss of photons along the way. In this experiment, published in, we securely distributed a quantum-encrypted key 100 kilometres via fibre optic cable. This is a record distance with this method," says Tobias Gehring, an associate professor at DTU, who, together with a group of researchers at DTU, aims to be able to distribute quantum-encrypted information around the world via the internet.
"The advantage of using this technology is that we can build a system that resembles what optical communication already relies on." Machine learning provided earlier measurements of the disturbances affecting the system. Noise, as these disturbances are called, can arise, for example, from electromagnetic radiation, which can distort or destroy the quantum states being transmitted. The earlier detection of the noise made it possible to reduce its corresponding effect more effectively.
Photons in a quantum state carry a fundamental uncertainty, meaning it is not possible with certainty to know whether the photon is one or several photons collected in the given state, also called coherent photons. This prevents a hacker from measuring the number of photons, making it impossible to make an exact copy of a state.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Ariana Grande Rules Hot 100 Songwriters & Producers Charts for First TimeShe’s the fourth act to top the Artist 100, Hot 100, Billboard 200, Hot 100 Songwriters and Hot 100 Producers charts simultaneously.
Read more »
FTSE 100, DAX 40 and Nasdaq 100 Await Plethora of Central Bank MeetingsOutlook on FTSE 100, DAX 40 and Nasdaq 100 ahead of BoE and FOMC rate decisions.
Read more »
![Elliott Wave guide: Boost SP500 & Nasdaq 100 trading strategy [Video]](https://i.headtopics.com/images/2024/3/15/fxstreetnews/elliott-wave-guide-boost-sp500-nasdaq-100-trading-elliott-wave-guide-boost-sp500-nasdaq-100-trading-381D920990FA2393443A58ADAC5B0825.webp?w=640)
Elliott Wave guide: Boost SP500 & Nasdaq 100 trading strategy [Video]Elliott Wave Analysis: SP500,NASDAQ 100, DAX 40, FTSE 100, ASX200.
Read more »
FTSE 100 Drops Back from Eight-Month High, while Dow and Nasdaq 100 Hold SteadyThe FTSE 100 has dropped back from the multi-month high seen this week, while US indices are looking to a flat open after losses yesterday.
Read more »
FTSE 100 rallies off morning low, while Dow and Nasdaq 100 subdued after Friday payrollsThe FTSE 100 is edging higher, while US markets find themselves caught between last Friday’s payrolls and tomorrow’s inflation data.
Read more »
FTSE 100 at Three Month Highs, Dow and Nasdaq 100 Move Higher Despite Hotter US InflationThe FTSE 100 has enjoyed a solid start to the week, while even a hotter US inflation reading has not been able to stop the rally in US markets.
Read more »