Archive for the ‘quantum physics’ category: Page 773
Mar 11, 2016
Can we build quantum-resistant encryption?
Posted by Karen Hurst in categories: computing, encryption, engineering, finance, government, internet, quantum physics
I do believe we’re within a 7 to 8 yr window at this point with Quantum hitting the broader main stream computing infrastructure. However, we have banks in Europe that have been using the technology for network communications, Los Alamos Labs experimenting since late 2011 with Quantum Internet, now China is launching their own Quantum Satellite for wireless communications; so I do suggest a strategy needs to be developed over the next 2 to 3 yrs for government & industry around how to manage & plan for deployment of Quantum especially with China & Russia’s interest.
New research demonstrating that quantum computing is now just an engineering challenge moves the possibility of encryption-cracking machines to the front burner.
Mar 11, 2016
AI is closer than we know
Posted by Karen Hurst in categories: Elon Musk, information science, quantum physics, robotics/AI
Google, AI, and Quantum — Google believes deep learning is not suitable on Quantum. Not so sure that I agree with this position because deep learning in principle is “a series of complex algorithms that attempt to model high-level abstractions in data by using multiple processing layers with complex structures” — the beauty around quantum is it’s performance in processing of vast sets of information and complex algorithms. Maybe they meant to say at this point they have not resolved that piece for AI.
Artificial intelligence is one of the hottest subjects these days, and recent advances in technology make AI even closer to reality than most of us can imagine.
The subject really got traction when Stephen Hawking, Elon Musk and more than 1,000 AI and robotics researchers signed an open letter issuing a warning regarding the use of AI in weapons development last year. The following month, BAE Systems unveiled Taranis, the most advanced autonomous UAV ever created; there are currently 40 countries working on the deployment of AI in weapons development.
Mar 11, 2016
Chinese scientists realize quantum simulation of the Unruh effect
Posted by Karen Hurst in categories: computing, cosmology, electronics, particle physics, quantum physics
Quantum mechanics and relativity theory are two pillars of modern physics. With their amalgamation, many novel phenomena have been identified. For example, the Unruh effect [1] is one of the most significant outcomes of the quantum field theory. This effect serves as an important tool to investigate phenomena such as thermal emission of particles from black holes and cosmological horizons [2]. It has been 40 years since the discovery of the Unruh effect, however, this effect is too weak to be observed with current technique. There have been a lot of attempts in searching for the observational evidence of the Unruh effect and in general the experimental observation is still of great challenge. To address this issue, quantum simulators [3, 4] may provide a promising approach. Quantum simulation is widely applied for simulating the quantum systems which cannot be efficiently simulated by classical computers or are not directly tractable by the current techniques in the laboratory.
The researchers, led by Prof. Jiangfeng Du from University of Science and Technology of China, reported an experimental simulation of the Unruh effect with an NMR quantum simulator [5]. The experiments were performed on a Bruker Avance III 400MHz spectrometer. The researchers used a sample of 13C, 1H and 19F nuclear spins in chloroform as the NMR quantum simulator, as shown in Figure 1(a). The simulated Unruh effect on the quantum states can be realized by the pulse sequence acting on the sample, as depicted in Figure 1(b). By the quantum simulator, they experimentally demonstrated the behavior of Unruh temperature with acceleration, which agrees nicely with the theoretical prediction, as shown in Figure 2. Furthermore, they investigated the quantum correlations quantified by quantum discord between two fermionic modes as seen by two relatively accelerated observers. It is shown for the first time that the quantum correlations can be created by the Unruh effect from the classically correlated states. This work was recently published in the Science China-Physics, Mechanics & Astronomy.
It is interesting that the Unruh effect was in Feynman’s blackboard as one of the issues to learn at the time of his death in 1988, while it was also Feynman who conceived the idea of quantum simulation in 1982. This quantum simulation of the Unruh effect will provide a promising window to explore the quantum physics of accelerated systems, which widely appear in black hole physics, cosmology and particle physics.
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Mar 10, 2016
Giant step forward taken in generating optical qubits
Posted by Karen Hurst in categories: computing, quantum physics
More large steps forward in Quantum technology with the latest chip with optical qubits.
The optical chip overcomes a number of obstacles in the development of quantum computers. A research team has demonstrated that on-chip quantum frequency combs can be used to simultaneously generate multiphoton entangled quantum bit states. It is the first chip capable of simultaneously generating multi-photon qubit states and two-photon entangled states on hundreds of frequency modes. The chip is scalable, compact, and compatible with existing technologies.
Mar 10, 2016
Gravitational Waves Will Show The Quantum Nature Of Reality
Posted by Karen Hurst in category: quantum physics
Now that LIGO has finally seen gravitational waves, we know that ripples in the fabric of space are real. But is gravity fundamentally a quantum force? Gravitational waves can teach us, but it’s won’t be LIGO that does it!
Mar 10, 2016
A Strange New Theory of How Space-Time is Emerging
Posted by Andreas Matt in categories: computing, cosmology, quantum physics
“A metaphorical chip holding all the programming for our universe stores information like a quantum computer.” This is the radical insight to the foundation of our Universe developed by Mark Van Raamsdonk, a professor of theoretical physics at the University of British Columbia, that says that the world we see around us is a projection from a set of rules written in simpler, lower-dimensional physics—just as the 2D code in a computer’s memory chip creates an entire virtual 3D world. “What Mark has done is put his finger on a key ingredient of how space-time is emerging: entanglement,” says Gary Horowitz, who studies quantum gravity at the University of California Santa Barbara. Horowitz says this idea has changed how people think about quantum gravity, though it hasn’t yet been universally accepted. “You don’t come across this idea by following other ideas. It requires a strange insight,” Horowitz adds. “He is one of the stars of the younger generation.”
“We’re trying to construct a dictionary,” says Van Raamsdonk, that allows physicists to translate descriptions of our complex universe into simpler terms. If they succeed, they will have found the biggest jigsaw piece in the puzzle of a Grand Unified Theory—something that can describe all of the forces of our universe, at all scales from the atomic to the galactic. That puzzle piece is, specifically, something that can describe gravity within the framework of quantum mechanics, which governs physics on small scales. Such a unified theory is needed to explain the extreme scenarios of a black hole or the first moments of the universe.”
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Mar 10, 2016
Puzzle game launched to help program quantum computers
Posted by Shailesh Prasad in categories: computing, entertainment, quantum physics
Researchers developing large-scale quantum computers hope that playing a video game will provide the solutions they need to program their advanced machines.
Mar 9, 2016
China Makes Techonological Breakthrough With Quantum Space Satellite
Posted by Karen Hurst in categories: government, quantum physics, space
China’s Quantum Satellite — it’s now official China has beaten the US with their launch of a Quantum Satellite for secured communications. At this rate; US can possibly expect China has and will continue to advance its networking infrastructure. US Government has a good strategy in place.
Quantum space satellite, a satellite under the Chinese space program, is making waves in the country as it is the first satellite to deliver quantum communication in China, according to Chinese state media.
This new innovation is a breakthrough technology and it will be an asset for China’s power all over the globe.
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Mar 9, 2016
Poll On Attitudes Towards Robots Finds Canadians As Pessimistic As It Gets
Posted by Karen Hurst in categories: quantum physics, robotics/AI
Given robotics history, I can understand Canada’s viewpoint. However, as technologies such as Quantum is applied to AI; we then will see real improvements in robotics. Until Quantum is AI’s platform; we will see robotics still fall short in many areas and will continue to see limited use and adoption.
Nowhere is the world’s robotic future more controversial than in Canada.
In a new global poll from travel site Travelzoo, Canadians were the least likely to agree that robots will make people’s lives better.
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