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Category: computing – Page 471

A novel all-optical switching method makes optical computing and communication systems more power-efficient

A group of photonics researchers at Tampere University have introduced a novel method to control a light beam with another beam through a unique plasmonic metasurface in a linear medium at ultra-low power. This simple linear switching method makes nanophotonic devices such as optical computing and communication systems more sustainable, requiring low intensity of light.

All– is the modulation of signal light due to control light in such a way that it possesses the on/off conversion function. In general, a can be modulated with another intense laser beam in the presence of a nonlinear medium.

The switching method developed by the researchers is fundamentally based on the quantum optical phenomenon known as Enhancement of Index of Refraction (EIR).

Quantum information was teleported over a network for the first time

When Heroes (now streaming on Peacock!) hit the airwaves in September of 2006, few characters were as immediately beloved as the appropriately named Hiro Nakamura. Granted the ability to manipulate space-time, Hiro could not only slow down, speed up, and stop time, he could also teleport from one place to another. That’s a useful skill if you need to get to a specific point in time and space to fight an evil brain surgeon or prevent the end of the world. It’s also useful if you want to build the quantum internet.

Researchers at QuTech — a collaboration between Delft University of Technology and the Netherlands Organization for Applied Scientific Research — recently took a big step toward making that a reality. For the first time, they succeeded in sending quantum information between non-adjacent qubits on a rudimentary network. Their findings were published in the journal Nature.

While modern computers use bits, zeroes, and ones, to encode information, quantum computers us quantum bits or qubits. A qubit works in much the same way as a bit, except it’s able to hold both a 0 and a 1 at the same time, allowing for faster and more powerful computation. The trouble begins when you want to transmit that information to another location. Quantum computing has a communications problem.

Novel method for early disease detection using DNA droplets

Aqueous droplet formation by liquid-liquid phase separation (or coacervation) in macromolecules is a hot topic in life sciences research. Of these various macromolecules that form droplets, DNA is quite interesting because it is predictable and programmable, which are qualities useful in nanotechnology. Recently, the programmability of DNA was used to construct and regulate DNA droplets formed by coacervation of sequence designed DNAs.

A group of scientists at Tokyo University of Technology (Tokyo Tech) led by Prof. Masahiro Takinoue has developed a computational DNA droplet with the ability to recognize specific combinations of chemically synthesized microRNAs (miRNAs) that act as biomarkers of tumors. Using these miRNAs as molecular input, the can give a DNA logic computing output through physical DNA droplet phase separation. Prof. Takinoue explains the need for such studies, “The applications of DNA droplets have been reported in cell-inspired microcompartments. Even though regulate their functions by combining biosensing with molecular logical computation, no literature is available on integration of DNA droplet with molecular computing.” Their findings were published in Advanced Functional Materials.

Developing this DNA droplet required a series of experiments. First, they designed three types of Y-shaped DNA nanostructures called Y-motifs A, B, and C with 3 sticky ends to make A, B, and C DNA droplets. Typically, similar droplets band together automatically while to join dissimilar droplets a special “linker” molecule is required. So, they used linker molecules to join the A droplet with the B and C droplets; these linker molecules were called AB and AC linkers, respectively.

Two Time Crystals Have Been Successfully Linked Together For The First Time

Physicists have just taken an amazing step towards quantum devices that sound like something out of science fiction.

For the first time, isolated groups of particles behaving like bizarre states of matter known as time crystals have been linked into a single, evolving system that could be incredibly useful in quantum computing.

Following the first observation of the interaction between two time crystals, detailed in a paper two years ago, this is the next step towards potentially harnessing time crystals for practical purposes, such as quantum information processing.

Taiwan export ban limits Russia and Belarus to chips with frequencies under 25 MHz

While Taiwan still allows Russia and Belarus to purchase CPUs from businesses within the East Asian country, there are some big caveats: their clock frequencies cannot exceed 25 MHz, and performance is limited to under 5 GFLOPS.

DigiTimes reports that Taiwan’s Ministry of Economic Affairs (MOEA) published a list this week of strategic high-tech commodities banned from exportation to Russia and Belarus. The latter country is included as MOEA believes it could help Russia import such goods.

The list, which is in accordance with Category 3 to Category 9 of the Wassenaar Arrangement, covers not only modern chips but also technology that could make or reverse engineer them, including lithography equipment, scanners, and scanning electron microscopes.

Physicists record lifetime of graphene qubits

For the first ever time, MIT scientists have quantified the temporal coherence (lifetime) of graphene qubits-meaning to what extent it can keep up a special state that enables it to speak to two coherent states at the same time.

As of late, specialists have been incorporating graphene-based materials into superconducting quantum computing gadgets, which guarantee quicker, progressively proficient computing, among different advantages. Up to this point, be that as it may, there’s been no recorded coherence for these advanced qubits, so there’s no knowing whether they’re feasible for practical quantum computing.

In a new study, scientists demonstrated a coherent qubit made from graphene and exotic materials. These materials empower the qubit to change states through voltage, much like transistors in today’s traditional computer chips — and not at all like most different kinds of superconducting qubits. Also, the specialists put a number to that coherence, timing it at 55 nanoseconds, before the qubit comes back to its ground state.

Why Elon Musk’s Starlink Satellites scare China? Chinese Researchers have come up with a plan to “destroy” SpaceX Starlink satellites

China has to have the capability to identify and destroy SpaceX’s Starlink satellites, according to Chinese military experts in a report released in April. The research, headed by Ren Yuanzhen of the Beijing Institute of Tracking and Telecommunications, was published in the Chinese peer-reviewed journal Modern Defence Technology. The publication inexplicably disappeared from the online version of The South China Morning Post after The South China Morning Post reported on its contents.

David Cowhig, a former US ambassador, was able to complete the translation of the document before it vanished, which allowed him to uncover a number of preventative steps that were suggested to be taken against Starlink. According to the study, China has to “use a mix of soft and hard kill measures to disrupt the operating system of the constellation and deactivate part of the Starlink satellites.”

NVIDIA launch rumor: GeForce RTX 4090 first, RTX 4080 + RTX 4070 after

We might be consumed with CPU news with AMD’s upcoming Zen 4-based Ryzen 7,000 series CPUs, teasing a 16-core engineering sample at 5.5GHz+ but now we’re back to GPU rumors again with NVIDIA reportedly launching the higher-end GeForce RTX 4,090 first.

According to the latest from leaker “kopite7kimi”, NVIDIA will reportedly launch the GeForce RTX 4,090 first, then the GeForce RTX 4,080 and GeForce RTX 4,070 after. This would break tradition, as NVIDIA normally launches the x080 and x070 series GPUs first, followed by the x090 series GPU… but the RTX 4,090 launching first makes sense.