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Archive for the ‘computing’ category: Page 189

Aug 1, 2023

Using chaotic inputs to improve microcomb-based parallel ranging

Posted by in category: computing

The transition to chaos is ubiquitous in nonlinear systems. Continuous-wave-driven photonic-chip-based Kerr microresonators exhibit spatiotemporal chaos, also known as chaotic modulation instability.

For more than fifteen years such modulation instability states have been considered impractical for applications compared to their coherent-light-state counterparts, such as soliton states. The latter have been the centerpiece for numerous high-profile application demonstrations, from long-range to photonic computing.

Now, researchers from the group of Tobias Kippenberg at EPFL have found a new way to harness the unique features of chaotic frequency combs to implement unambiguous and interference-immune massively parallel ranging by utilizing the intrinsic random amplitude and phase modulation of the chaotic comb lines.

Aug 1, 2023

U.S. Tech Sanctions Against China Are Starting to Bite Hard

Posted by in category: computing

The U.S. plans to slowly choke china’s access to leading-edge chips and semiconductor manufcturing equipment seems to be bearing fruits, as imports of both chips and fabrication tools fell by over 20%.

Aug 1, 2023

Photonic chip transforms single beam of light into multiple beams, each with a panoply of different properties

Posted by in categories: biotech/medical, computing, quantum physics

Researchers at the National Institute of Standards and Technology (NIST) have devised a photonic circuit on a chip that transforms a single incoming beam of laser light into a panoply of new beams, each with a host of different optical properties.

The newly generated beams—which retain the frequency of the original beam—simultaneously exit the circuit at different locations along the . That allows scientists and engineers to select the specific characteristics of one or more beams needed for a particular application.

Precision shaping and controlling beams of visible light are critical for diagnosing and studying human diseases, trapping atoms that form the basis of the world’s most , quantum computing, and many other quantum-based technologies.

Aug 1, 2023

Telecom-band-integrated multimode photonic quantum-memory

Posted by in categories: computing, quantum physics

Quantum memory that depends on quantum-band integration is a key building block used to develop quantum networks that are compatible with fiber communication infrastructures. Quantum engineers and IT specialists have yet to create such a network with large capacity to form an integrated multimode photonic quantum memory at telecom band.

In a new report in Science Advances, Xueying Zhang and a research team in electronic science, physics, and information technology described fiber-integrated multimode storage of a single photon at telecom band on a laser-written chip.

The storage device made of fiber-pigtailed erbium (Er3+) doped lithium niobate (Er3+:LiNbO3), presented a memory system integrated with telecom-band fiber-integrated on-chip components. The outcomes of the study highlight a pathway for future to come in to being, based on integrated photonics devices.

Jul 31, 2023

Intel’s stock surges after better-than-expected Q2 results

Posted by in categories: computing, finance

Despite that drop, the company did better than expected. Wall Street had forecast it would lose 3 cents a share on an adjusted basis on sales of $12.1 billion, according to Yahoo Finance.

“Our overall position is strengthening,” CEO Pat Gelsinger told analysts, adding later, “simply put, it was a very good quarter.”

Still, he and Chief Financial Officer Dave Zinsner noted that the selling environment was improving only slowly, particularly for server chips.

Jul 30, 2023

New research clarifies connection between autism and the microbiome

Posted by in categories: biotech/medical, computing, genetics, neuroscience

The biological roots of autism continue to perplex researchers, despite a growing body of studies looking at an increasing array of genetic, cellular and microbial data. Recently, scientists have homed in on a new and promising area of focus: the microbiome. This collection of microbes that inhabit the human gut has been shown to play a role in autism, but the mechanics of this link have remained awash in ambiguity.

Taking a fresh computational approach to the problem, a study published today, June 26, in Nature Neuroscience sheds new light on the relationship between the microbiome and . This research—which originated at the Simons Foundation’s Autism Research Initiative (SFARI) and involved an innovative reanalysis of dozens of previously published datasets—aligns with a recent, long-term study of autistic individuals that centered on a microbiome-focused treatment intervention. These findings also underscore the importance of longitudinal studies in elucidating the interplay between the microbiome and complex conditions such as autism.

“We were able to harmonize seemingly disparate data from different studies and find a common language with which to unite them. With this, we were able to identify a microbial signature that distinguishes autistic from neurotypical individuals across many studies,” says Jamie Morton, one of the study’s corresponding authors, who began this work while a postdoctoral researcher at the Simons Foundation and is now an independent consultant. “But the bigger point is that going forward, we need robust long-term studies that look at as many datasets as possible and understand how they change when there is a [therapeutic] intervention.”

Jul 30, 2023

Lights could be the future of the internet and data transmission

Posted by in categories: computing, internet

Fast data transmissions could be delivered in homes and offices through light-emitting diodes (LED) bulbs, complementing existing communication technologies and networks.

The future’s new internet technologies are being rapidly refined by academics and LED-based communication links are expected to be extensively used in numerous emerging services and scenarios, including Light-fidelity (Li-Fi), underwater communications, moderate-to high-speed photonic interconnects and various “Internet of Things” (IoT) devices.

A new study, published in Nature Photonics and led by the University of Surrey and University of Cambridge, has investigated how to release high-speed photonic sources using . These are semiconductors being researched with LEDs for their excellent optoelectronic properties and low-cost processing methods.

Jul 30, 2023

UChicago Scientists Show Entanglement Is Responsible For Computational Hardness In Quantum Systems

Posted by in categories: computing, quantum physics

A University of Chicago-led team found a computational problem that showed entanglement is responsible for quantum speedups.

Jul 29, 2023

Team creates simple superconducting device that could dramatically cut energy use in computing

Posted by in categories: computing, engineering, quantum physics

MIT scientists and colleagues have created a simple superconducting device that could transfer current through electronic devices much more efficiently than is possible today. As a result, the new diode, a kind of switch, could dramatically cut the amount of energy used in high-power computing systems, a major problem that is estimated to become much worse.

Even though it is in the early stages of development, the diode is more than twice as efficient as similar ones reported by others. It could even be integral to emerging quantum computing technologies. The work, which is reported in the July 13 online issue of Physical Review Letters, is also the subject of a news story in Physics Magazine.

“This paper showcases that the superconducting diode is an entirely solved problem from an engineering perspective,” says Philip Moll, Director of the Max Planck Institute for the Structure and Dynamics of Matter in Germany. Moll was not involved in the work. “The beauty of [this] work is that [Moodera and colleagues] obtained record efficiencies without even trying [and] their structures are far from optimized yet.”

Jul 29, 2023

The Anthropic Principle — How Your Existence Could Lead to a Multiverse

Posted by in categories: computing, cosmology, mathematics, particle physics

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