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Recently, scientists at the University of Copenhagen and Ruhr University Bochum made an amazing discovery – they can now control two light sources at once! This is really important because it’s part of something called ‘quantum mechanics’ which will allow businesses to use this new technology in exciting ways.
Researchers have been trying hard to figure out a way to make two connected light sources. This feat is called quantum entanglement, and it’s like something from a science fiction movie – the two sources can interact with each other, even over long distances. Entangling these two sources of light is really important for two reasons: it could form the basis of powerful quantum computers, and it could also create networks that allow us to instantly communicate far away from our current location.
Scientists from the Niels Bohr Institute finished their research and published it in a well-known journal called Science. Their result is very important because it may help to advance quantum technology such as using computers, encryption and the internet more efficiently. According to Professor Peter Lodahl, who worked on this result, this finding could be what we need to move up a level with our tech and make everyday life even better.
From left to right, Peter Lodahl, Anders Sørensen, Vasiliki Angelopoulou, Ying Wang, Alexey Tiranov and Cornelis van Diepen are members of the group who made this invention. A picture was taken of them by Ola J. Joensen while they were at the Niels Bohr Institute.
We figured out a way to control two quantum light sources and link them up. It might not sound too amazing, but it’s a great achievement! We made this discovery after almost 20 years of research. Professor Peter Lodahl from 2001 has been studying this area for a long time and understands what is needed to make important quantum hardware applications work.
The incredible thing happens in something called a nanochip—which is really small, only about as wide as a human hair. Scientists made this tiny chip recently.
Unlocking the Mystery of Entangled Quantum Light Sources
Peter Lodahl’s team is researching a kind of quantum technology that uses tiny particles of light, known as photons, to move quantum information.
Until now, Lodahl’s group had only been able to control one light source at a time. This is because light sources can be very easily affected by ‘noise’ making them hard to copy. But in their new result they finally succeeded in creating two identical quantum light sources instead of just one!
Entanglement means that by controlling one light source, you can instantly affect the other. This allows us to create a huge network of linked quantum light sources which interact with each other. We can make these light sources do special computing tasks just like in regular computers but better. Alexey Tiranov, who wrote this article, explains it all.
Quantum bits have special powers that make them unique from normal computer tech. Professor Lodahl said that even just 100 tiny particles of light from a quantum light source contain more information than the biggest supercomputer can handle.
Big companies are investing billions of dollars in the hope of building a super quantum computer. To do this, they need 20-30 light sources which are specially entangled to make it work.
Scientists Make Big Step in Quantum Physics Research, Making Computers and Internet More Secure!
Scientists have been trying a lot to figure out how to use two quantum light sources instead of just one. To do this, they’ve had to make tiny chips that no noise comes from, and be in control of both the light sources in a precise manner.
Scientists just recently made a big step in their research of quantum physics. This makes it possible for others to use the knowledge in activities regarding computers, the Internet, and advanced methods of securing information (encryption).
Professor Lodahl said that it’s too expensive for a university to build something with 15-20 quantum light sources. We’ve taken our first step in understanding quantum physics, but now it’s time to make these ideas bigger, which is more of a technological challenge.
This passage is about research done by a group of scientists working on understanding the way light acts between two distant sources. This study was published on 26 January 2023 in Science Magazine and is written by Alexey Tiranov, Vasiliki Angelopoulou, Cornelis Jacobus van Diepen, Björn Schrinski, Oliver August Dall’Alba Sandberg, Ying Wang, Leonardo Midolo, Sven Scholz, Andreas Dirk Wieck, Arne Ludwig, Anders Søndberg Sørensen and Peter Lodahl. The aim of this research is to better understand how light works when travelling between two places that are separated by distance.
Researchers from two different universities, Ruhr University Bochum in Germany and Niels Bohr Institute in Denmark, did a study together at the Danish National Research Foundation’s Hy-Q center.
