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Quantum Network Joins Four People Together For Encrypted Messaging
The quantum internet is starting small, but growing. Researchers have created a network that lets four users communicate simultaneously through channels secured by the laws of quantum physics, and they say it could easily be scaled up. Soren Wengerowsky at the University of Vienna and his colleagues devised a network that uses quantum key distribution (QKD) to keep messages secure [the link is paywalled]. The general principle of QKD is that two photons are entangled, meaning their quantum properties are linked. |
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| Steve Ballmer |
The number one benefit of information technology is that it empowers people to do what they want to do. It lets people be creative. It lets people be productive. It lets people learn things they didn't think they could learn before, and so in a sense it is all about potential. |
| Marianne Williamson |
Old Newtonian physics claimed that things have an objective reality separate from our perception of them. Quantum physics, and particularly Heisenberg's Uncertainty Principle, reveal that, as our perception of an object changes, the object itself literally changes. |
| Stephen Hawking |
In my school, the brightest boys did math and physics, the less bright did physics and chemistry, and the least bright did biology. I wanted to do math and physics, but my father made me do chemistry because he thought there would be no jobs for mathematicians. |
| Edward Felten |
Even if there were no illegal copying, the advent of digital distribution will put a lot of stress on the movie and music industry. When the distribution costs comes down, that puts more price pressure on the rest of the cost. |
| Trudi Canavan |
The first rule of world-building is available physics, which basically means that if you want it to feel real, it has to follow the same rules as this world, from gravity to how human behaviour works. If you have a fantasy element that doesn't obey the laws of physics, make sure that it has a fantasy explanation. |
| Anita Elberse |
As demand shifts from offline retailers with limited shelf space to online channels with much larger assortments, the sales distribution is not getting fatter in the tail. |
| Kay Hagan |
The Small Business 'common app' would function much like the one that students complete to apply to multiple colleges and universities simultaneously. It would ensure that small businesses across the country can concentrate on growing and creating jobs - not wasting time, filling out mountains of repetitive paperwork. |
| Francois Fenelon |
Nothing is more despicable than a professional talker who uses his words as a quack uses his remedies. |
| Tony Abbott |
I think that people should come to Australia through the front door, not through the back door. If people want a migration outcome, they should go through the migration channels. |
| John Edward |
I think that the majority of messages are validating messages to confirm the survival of conscious. And many times that validation message is negative or sad. |
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Researchers Demonstrate Teleportation Using On-Demand Photons From Quantum Dots
A team of researchers from Austria, Italy and Sweden has successfully demonstrated teleportation using on-demand photons from quantum dots. In their paper published in the journal Science Advances, the group explains how they accomplished this feat and how it applies to future quantum communications networks. Scientists and many others are very interested in developing truly quantum communications networks -- it is believed that such networks will be safe from hacking or eavesdropping due to their very nature. But, as the researchers with this new effort point out, there are still some problems standing in the way. One of these is the difficulty in amplifying quantum signals. One way to get around this probl...
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Researchers Created ‘Quantum Artificial Life’ For the First Time
“Our research brought these amazingly sophisticated events called life to the realm of the atomic and microscopic world …and it worked.”
For the first time, an international team of researchers has used a quantum computer to create artificial life—a simulation of living organisms that scientists can use to understand life at the level of whole populations all the way down to cellular interactions.
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Quantum Questions Require Quantum Answers
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China Says It Has Developed a Quantum Radar That Can See Stealth Aircraft
At a recent air show in the city of Zhuhai, state-owned Chinese defense giant China Electronics Technology Group Corporation displayed what it claims to be a quantum radar that's able to detect even the stealthiest of stealth aircraft. The company claims to have been working on the technology for years, and to have tested it for the first time in 2015. In principle, a quantum radar functions like a regular radar -- only that instead of sending out a single beam of electromagnetic energy, it uses two split streams of entangled photons. Only one of these beams is sent out, but due to a quirk of quantum physics both streams will display the same changes, despite being potentially miles apart. As a result, by looking a...
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Lene Vestergaard Hau (born November 13, 1959 in Vejle, Denmark) is a Danish physicist with a PhD from Aarhus University. In 1999, she led a Harvard University team who, by use of a Bose-Einstein condensate, succeeded in slowing a beam of light to about 17 metres per second, and, in 2001, was able to stop a beam completely.[1] Later work based on these experiments led to the transfer of light to matter, then from matter back into light,[2] a process with important implications for quantum encryption and quantum computing.
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More Than One Reality Exists (in Quantum Physics)
Can two versions of reality exist at the same time? Physicists say they can -- at the quantum level, that is.
Researchers recently conducted experiments to answer a decades-old theoretical physics question about dueling realities. This tricky thought experiment proposed that two individuals observing the same photon could arrive at different conclusions about that photon's state -- and yet both of their observations would be correct.
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North Korea Gets Second Route To Internet Via Russia Link
Russia is providing North Korea another way to get on the internet, according to cybersecurity outfit FireEye. In an interview on Monday, FireEye's chief technology officer for the Asia-Pacific region, Bryce Boland, said that Russia telecommunications company TransTeleCom opened a new link for users in North Korea. Until now, state-owned China United Network Communications Ltd. was the country's sole connection. Bloomberg reports:
"Having an additional loop via Russia gives North Korea more options for how they can operate and reduces the possibility for the United States to put pressure just on a single country to turn off their i...
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Physicists reverse time using quantum computer
Researchers from the Moscow Institute of Physics and Technology teamed up with colleagues from the U.S. and Switzerland and returned the state of a quantum computer a fraction of a second into the past. They also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. The study is published in Scientific Reports.
"This is one in a series of papers on the possibility of violating the second law of thermodynamics. That law is closely related to the notion of the arrow of time th...
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Millions of Smartphones in 11 Countries Were Taken Offline Yesterday by an Expired Certificate
Ericsson has confirmed that a fault with its software was the source of yesterday's massive network outage, which took millions of smartphones offline across the UK and Japan and created issues in almost a dozen countries. From a report:
In a statement, Ericsson said that the root cause was an expired certificate, and that "the faulty software that has caused these issues is being decommissioned." The statement notes that network services were restored to most customers on Thursday, while UK operator O2 said that its 4G network was back up as of early Friday morning.
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NASA's Atomic Fridge Will Make the ISS the Coldest Known Place in the Universe
Later this year, a small part of the International Space Station will become 10 billion times colder than the average temperature of the vacuum of space thanks to the Cold Atom Lab (CAL). Once it's on the space station, this atomic fridge will be the coldest known place in the universe and will allow physicists to 'see' into the quantum realm in a way that would never be possible on Earth.
In a normal room, "atoms are bouncing off one another in all directions at a few hundred meters per second," Rob Thompson, a...
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