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Category: quantum physics – Page 806

Nice; ReRam with multi-state processing and reliable storage.

Short of full blown molecular computers or universal quantum computers or optical computers memristors have the most potential for a hardware change to dramatically boost the power and capabilities of computers. The boost to computer power could be nearly a million times by fully leveraging memristors. It would likely be more like a thousand times with more near to mid term usage of memristors.

Memristors (aka ReRAM) could become computer memory that is over 10 times denser than Flash or DRAM in two dimensions. Memristors like flash would be nonvolatile memory that would not need power for retain memory. Memristors are created from nanowire lattices which could be stacked in three dimensions. Memristors have also previously been shown to behave like brain synapses which could be used for computer architectures that emulate the human brain for neuromorphic computing. Now there is work on multistate memristors that perform computation. This means that eventually processing and memory could be tightly integrated.

Light travels 30 centimeters in 1 nanosecond. Wires have an approximate propagation delay of 1 ns for every 6 inches (15 cm) of length. Logic gates can have propagation delays ranging from more than 10 ns down to the picosecond range, depending on the technology being used.

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QC communications (includes networking) is now available in China.

Nice job China; now if the rest of us can catch up.

China’s quantum communication satellite, launched last August, is officially operational after four months of in-orbit testing, the Chinese Academy of Sciences (CAS) said Wednesday.

Testing of the satellite, payloads and space-ground links have been completed, the CAS said, adding that everything was operating properly.

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Hope folks are realizing this is happening and now real. Not sure what experiments their doing as they have already been experimenting already on hacking.

The world’s first quantum science and communications satellite has been handed over to Chinese scientists for the official start of experiments to test the phenomena of quantum entanglement and ‘unhackable’ quantum communication.

The Quantum Experiments at Space Scale (QUESS) satellite was launched on August 15 last year and soon after began testing its payloads and space-to-ground links.

“The in-orbit test came to a very successful end,” said mission designer and leader Pan Jianwei, an academic at the Chinese Academy of Sciences (CAS) which oversees the institutions involved in the mission.

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Physicists at Princeton University have revealed a device they’ve created that will allow a single electron to transfer its quantum information to a photon. This is a revolutionary breakthrough for the team as it gets them one step closer to producing the ultimate quantum computer. The device is the result of five years worth of research and could accelerate the world of quantum computing no end.

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Scientists at the University of Sydney have demonstrated the ability to “see” the future of quantum systems, and used that knowledge to preempt their demise, in a major achievement that could help bring the strange and powerful world of quantum technology closer to reality.

The applications of quantum-enabled technologies are compelling and already demonstrating significant impacts — especially in the realm of sensing and metrology. And the potential to build exceptionally powerful quantum computers using quantum bits, or qubits, is driving investment from the world’s largest companies.

However a significant obstacle to building reliable quantum technologies has been the randomisation of by their environments, or decoherence, which effectively destroys the useful quantum character.

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In Brief

  • Scientists are a little bit closer to unlocking the mystery of how the rules of the quantum realm translate to the rules of the classical physics of the observable world.
  • Experts predict that the materials used in this research, topological insulators, will play a key role in furthering this development.

It’s no surprise that quantum physics can be disorienting to the casual observer; after all, it does follow its own set of rules quite different from those of classical physics which rule over our everyday experience. In the quantum realm, things can and cannot be at the same time (to a certain extent) or are continually moving without spending energy. These don’t apply to the physics of macro-level matter.

These two realms are related, in so far as they occur in the same physical space. This relationship is what N. Peter Armitage, an associate professor of physics at Johns Hopkins University, wanted to figure out in a study published in the journal Science. “We found a particular material that is straddling these two regimes,” Armitage said.

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Although this was published last week; I got a request to share again for those who missed it.

While “product-market fit” may have become the mantra for many tech companies and investors, we believe there are still plenty of companies out there with their eyes set on building true game-changing technologies. In our Game Changers report, we identified 8 categories of innovation that could have the greatest impact on how we live. Among these is next-gen computing — specifically, quantum computers and DNA data-writing technologies, which have the potential to fast-track innovation across industries.

Quantum computers can solve real-world problems much faster than traditional computers — and their capacity is only increasing. Meanwhile, using synthetic DNA to store vastly more data than a typical chip has the potential to revolutionize computers’ memory capacity.

In our report, we identified 5 startups taking computing to the next level through quantum computing and DNA-based data writing. The top five next-gen computing game changers are Twist Bioscience, Rigetti Computing, Cambridge Quantum Computing, KnuEdge, and Optalysys. On the vanguard of computing research, many companies in the category are at the grant, seed, or Series A stage, with the notable exception of the later-stage DNA computer tech company Twist Bioscience.

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