Archive for the ‘computing’ category: Page 4

Sep 13, 2023

How Tiny Schrödinger’s Cats Could Upend Quantum Again

Posted by in categories: computing, quantum physics

The building blocks of quantum computers are often thought to imitate the famous thought experiment known as Schrödinger’s cat, in which quantum physics essentially suspends a cat in a box in a nebulous state between life and death: The cat only definitely becomes alive or dead when someone looks in the box. Now, by mimicking Schrödinger’s cats as closely as possible, a French startup reveals it could help make extraordinarily powerful quantum computers a reality sooner than previously thought—a strategy Amazon is also pursuing.

Classical computers generally switch transistors either on or off to symbolize data as ones or zeroes. In contrast, quantum computers use quantum bits— qubits —that, because of the surreal nature of quantum physics, can exist in a state of superposition where they are both 1 and 0 at the same time. This essentially lets each qubit carry out two calculations simultaneously. The more qubits are quantum-mechanically linked, or entangled, the more calculations they can perform at once, to an exponential degree.

The new strategy depends on so-called “cat states,” pairs of very different quantum states as diametrically opposed to one another as the “alive” and “dead” feline once famously postulated by Erwin Schrödinger.

Sep 13, 2023

Defying Conventional Wisdom — Scientists Push the Boundaries of Photonics

Posted by in categories: chemistry, computing, quantum physics

Defying conventional wisdom, scientists have discovered a novel coupling mechanism involving leaky mode, previously considered unsuitable for high-density integration in photonic circuits.

This surprising discovery paves the way for dense photonic integration, transforming the potential and scalability of photonic chips in areas such as optical computing quantum communication, light detection and ranging (LiDAR), optical metrology, and biochemical sensing.

In a recent Light Science & Application publication, Sangsik Kim, associate professor of electrical engineering at Korea Advanced Institute of Science and Technology (KAIST), and his students at Texas Tech University demonstrated that an anisotropic leaky wave can achieve zero crosstalk between closely spaced identical waveguides using subwavelength grating (SWG) metamaterials.

Sep 13, 2023

Researchers take first step to de-freezing quantum computing

Posted by in categories: computing, quantum physics


Quantum computing is the next frontier of computation, potentially allowing for calculations that are impossible for classic computers to even process. As researchers around the world work to optimize the computations with an increasing number of quantum bits or qubits, the biggest hurdle they face is the need for ultra-cool environments to run these computers themselves.

Sep 13, 2023

Quantum Breakthrough: Scientists Develop New Way To Manipulate Exotic Materials

Posted by in categories: computing, quantum physics

A breakthrough in a topological insulator material, which possesses insulating properties internally but conductive properties on the surface, has the potential to transform the realms of advanced electronics and quantum computing.

Performing computation using quantum-mechanical phenomena such as superposition and entanglement.

Sep 13, 2023

A strategy to fabricate highly performing tin perovskite-based transistors

Posted by in categories: computing, solar power, sustainability

Metal halide perovskites are semiconducting materials with advantageous optoelectronic properties, low defects and low costs of production. In contrast with other emerging semiconductors, these materials can be easily synthesized via affordable solution processing methods.

In recent years, some engineers have been exploring the potential of for creating highly solar cells and light emitting diodes (LEDs). Their favorable characteristics, however, could also facilitate their use for fabricating next-generation , including .

Researchers at Pohang University of Science and Technology in South Korea, the Chinse Academy of Sciences and the University of Electronic Science and Technology of China recently introduced a new strategy to develop transistors based on a metal perovskite, specifically tin perovskite. In their paper, published in Nature Electronics, they showed that the resulting tin perovskite-based transistors could attain performances comparable to those of existing .

Sep 12, 2023

Precise control of qubits using new quantum computing method

Posted by in categories: computing, particle physics, quantum physics

Instead of designing their own qubits for study, the team used nature-made ones and focused on ways to control them.

Researchers at the University of Waterloo in Canada have developed a novel and robust way to control individual qubits. This ability is a crucial step as humanity attempts to scale up its computational capacities using quantum computing, a press release said.

Much like silicon-based computers use bits as the basic unit of storing information, quantum computers use quantum bits or qubits. A number of elemental particles, such as electrons and photons, have been used to serve this purpose, wherein the charge or polarization of the light is used to denote the 0 or 1 state of the qubit.

Sep 12, 2023

Apple not as far along on 5G chip, renews Qualcomm deal

Posted by in categories: computing, mobile phones

Qualcomm shares surged 4 percent after deal announcement.

In a major win for Qualcomm, the wireless tech company has struck a new chips agreement with Apple. Their previous deal to provide 5G modem chips was inked in 2019 and was set to conclude this year. The new deal signed Monday means it will continue to be a supplier to the iPhone maker through 2026.

The deal also means that Qualcomm will maintain its patent licensing agreement with Apple, which would mean millions in royalty revenue for the chipmaker. Qualcomm shares shot up by 4 percent soon after the deal’s announcement.

Sep 12, 2023

Laser Precision Qubit Control: Leap in Reliable Quantum Information Processing

Posted by in categories: computing, quantum physics

Using laser light, researchers have innovated a precise method to control individual barium qubits, advancing prospects for quantum computing.

Researchers have pioneered a groundbreaking technique utilizing laser light to control individual qubits made of barium more robustly than any other method currently known. Reliably controlling qubits is a critical step towards actualizing functional quantum computers of the future.

Developed at the university of waterloo.

Sep 11, 2023

Scientists Build Computer Chips Out of Mushrooms

Posted by in categories: biotech/medical, computing

Excitingly, the researchers told New Scientist that if kept out of UV light, the products have the potential to last for a very long time. When it ultimately comes time to sunset the device, the substrate can simply be placed in soil, where it will biodegrade — thus naturally separating from the more recyclable computer components that the substrates hold.

The results have been promising. According to a press release, the material was tested by soldering a standard computer chip into it — and the researchers say the mushroom skin did pretty a solid job. And though it’s not ready for production just yet, the hope is that one day this mycelium material will become the substrate norm for printed circuit boards, flexible electronics, and even some medical devices.

“The prototypes produced are impressive,” Andrew Adamatzky, a computer scientist at the University of the West of England, told New Scientist, “and the results are groundbreaking.”

Sep 11, 2023

A physics-based Ising solver based on standard CMOS technology

Posted by in categories: computing, mapping, quantum physics

Quantum computers, systems that perform computations by exploiting quantum mechanics phenomena, could help to efficiently tackle several complex tasks, including so-called combinatorial optimization problems. These are problems that entail identifying the optimal combination of variables among several options and under a series of constraints.

Quantum computers that can tackle these problems should be based on reliable hardware systems, which have an intricate all-to-all node connectivity. This connectivity ultimately allows representing arbitrary dimensions of a problem to be directly mapped onto the .

Researchers at University of Minnesota recently developed a new electronic device based on standard complementary metal oxide semiconductor (CMOS) technology that could support this crucial mapping process. This device, introduced in a paper in Nature Electronics, is a physics-based Ising solver comprised of coupled ring oscillators and an all-to-all node connected architecture.

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