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Category: quantum physics – Page 896

Great article; and does an excellent job in explaining how traditional QC operates in an analog or non-analog/ digital state; and Lee introduces us to a third pseudo-hybrid state sometimes referred to as adiabatic quantum computer. I must admit Chris Lee’s 1st remark “There are many different schemes for making quantum computers work (most of them evil).” threw me for a loop and then quickly understood it’s part of his humor which is certainly a way to capture the reader’s attention quickly.

BTW — This is one of the best write ups and POVs on QC that I have read so far.

Digital quantum network cleans up analog noise, allows quantum computation.

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Wow and just in time for China’s Quantum Satellite launch next month.

News about this “extreme” decision has drawn ire from many Singaporeans who have criticised the government’s decision on social media.

But, in a surprise move, the Singaporean government has resorted to limiting the Internet access for government work stations for over a year for security reasons. The system of “No internet” for public servants should be more clear-cut, experts say.

He added: “As public servants, we have a duty and responsibility to protect the Government and citizens’ information and data”.

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The process begins with tiny, nanoscale diamonds that contain a specific type of impurity: a single nitrogen atom where a carbon atom should be, with an empty space right next to it, resulting from a second missing carbon atom. This “nitrogen vacancy” impurity gives each diamond special optical and electromagnetic properties.

By attaching other materials to the diamond grains, such as metal particles or semiconducting materials known as “quantum dots,” the researchers can create a variety of customizable hybrid nanoparticles, including nanoscale semiconductors and magnets with precisely tailored properties.

“If you pair one of these diamonds with silver or gold nanoparticles, the metal can enhance the nanodiamond’s optical properties. If you couple the nanodiamond to a semiconducting quantum dot, the hybrid particle can transfer energy more efficiently,” said Min Ouyang, an associate professor of physics at UMD and senior author on the study.

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Check this out!

UChicago hasthis been able for the first time conduct an experiment shows the behavior of quantum materials in curved space. In their own words, “We are beginning to make our photons interact with each other. This opens up many possibilities, such as making crystalline or exotic quantum liquid states of light. We can then see how they respond to spatial curvature.”

Interplay of light, matter is of potential technological interestQuantum Hall state

These false-color images represent the quantum Hall state that UChicago physicists created by shining infrared laser light at specially configured mirrors. Achieving this state with light instead of matter was an important step in developing computing and other applications from quantum phenomena. Courtesy of Nathan Schine, Albert Ryou, Andrey Gromov, Ariel Sommer, and Jonathan Simon.

CHICAGO–(ENEWSPF)–June 10, 2016. Light and matter are typically viewed as distinct entities that follow their own, unique rules. Matter has mass and typically exhibits interactions with other matter, while light is massless and does not interact with itself. Yet, wave-particle duality tells us that matter and light both act sometimes like particles, and sometimes like waves.

Harnessing the shared wave nature of light and matter, researchers at the University of Chicago, led by Jonathan Simon, the Neubauer Family Assistant Professor of Physics, have used light to explore some of the most intriguing questions in the quantum mechanics of materials. The topic encompasses complex and non-intuitive phenomena that are often difficult to explain in non-technical language, but which carry important implications to specialists in the field.

Continue reading “UChicago Physicists First to See Behavior of Quantum Materials in Curved Space” | >

Google is to trying to combine the Adiabatic Quantum computing AQC method with the digital approach’s error-correction capabilities.

The Google team uses a row of nine solid-state qubits, fashioned from cross-shaped films of aluminium about 400 micrometres from tip to tip. These are deposited onto a sapphire surface. The researchers cool the aluminium to 0.02 degrees kelvin, turning the metal into a superconductor with no electrical resistance. Information can then be encoded into the qubits in their superconducting state.

The interactions between neighboring qubits are controlled by ‘logic gates’ that steer the qubits digitally into a state that encodes the solution to a problem. As a demonstration, the researchers instructed their array to simulate a row of magnetic atoms with coupled spin states — a problem thoroughly explored in condensed-matter physics. They could then look at the qubits to determine the lowest-energy collective state of the spins that the atoms represented.

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Featuring backside-illuminated sensor technology providing 95% quantum efficiency, the Prime 95B from 2016 Innovators Awards silver-level honoree Photometrics is reportedly three times more sensitive than the current generation of sCMOS cameras. The camera features a GSENSE400BSI-TVISB scientific CMOS (sCMOS) sensor from Gpixel Inc., which is a 1.44 MPixel sensor with a 11 µm square pixel size that can achieve a frame rate of 41 fps in 16-bit and 82 fps in 12-bit. The Prime 95B, according to Photometrics, is optimized for low-light microscopy and life sciences imaging applications because of its ability to collect nearly all available light, and maximize the signal-to-noise ratio of the experiment while minimizing cellular photo damage. Additionally, the camera features forced air or liquid cooling options, as well as a PCIe and USB 3.0 interfaces.

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The QUTIS research group (www.qutisgroup.com) of the University of the Basque Country (UPV/EHU) and Google’s quantum computation team have collaborated on a pioneering experiment that universally digitizes analogue quantum computation on a superconducting chip. This breakthrough was made at Google’s labs in Santa Barbara (California) and has been published in the prestigious journal Nature.

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Nice!

Scientists can now identify the exact location of a single atom in a silicon crystal, a discovery that is key for greater accuracy in tomorrow’s silicon based quantum computers.

It’s now possible to track and see individual phosphorus atoms in a silicon crystal allowing confirmation of quantum computing capability, but which also has use in nano detection devices.

Quantum computing has the potential for enormous processing power in the future. Current laptops have transistors that use a binary code, an on-or-off state (bits). But tomorrow’s quantum computers will use quantum bits ‘qubits’, which have multiple states.

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