Lifeboat Foundation

To tackle the problem, the LIGO Scientific Collaboration followed an approach, proposed in 2001, that involves squeezing the noise ellipse differently at different frequencies. This frequency-dependent squeezing is realized by coupling the interferometer to a 300-m-long “filter” cavity. Through the cavity, the team could tailor the spectrum of the squeezed state, injecting amplitude squeezing in the low-frequency region and phase squeezing in the high-frequency region, says Victoria Xu, also of MIT LIGO Lab. “This [approach] allows us to reduce the limiting forms of quantum noise in each frequency band,” she says.

The frequency-dependent approach had previously been demonstrated in tabletop systems but implementing it to mitigate radiation-pressure noise in a full-scale gravitational-wave detector was a massive engineering challenge, Xu says. An important aspect was the minimization of optical losses due to imperfect optical components or to a mismatch of the light modes propagating in the various parts of the setup—the filter cavity, the squeezer, and the interferometer. “Any loss can be seen as a ‘port’ through which regular, nonsqueezed vacuum can enter,” Barsotti says.

The LIGO Scientific Collaboration tested frequency-dependent squeezing during the commissioning of the instrument upgrades for the fourth run, comparing detector noise spectra for no squeezing, frequency-independent squeezing, and frequency-dependent squeezing. Frequency-dependent squeezing yielded similar enhancements to frequency-independent squeezing at high frequencies while eliminating the degradation below 300 Hz due to radiation-pressure noise. The team estimated that the improved noise performance would increase the distance over which mergers can be detected by 15%–18%, corresponding to up to a 65% increase in the volume of the Universe that the LIGO interferometer will be able to probe. Quantum optics specialist Haixing Miao of Tsinghua University in China says this result demonstrates an exceptional ability to manipulate quantum states of light with optical cavities but also offers an impressive demonstration that quantum measurement theory applies to the kilometer scales of a gravitational-wave detector.

Researchers at the University of Stuttgart have demonstrated that a key ingredient for many quantum computation and communication schemes can be performed with an efficiency that exceeds the commonly assumed upper theoretical limit — thereby opening up new perspectives for a wide range of photonic quantum technologies.

Quantum science not only has revolutionized our understanding of nature, but is also inspiring groundbreaking new computing, communication, and sensor devices. Exploiting quantum effects in such ‘quantum technologies’ typically requires a combination of deep insight into the underlying quantum-physical principles, systematic methodological advances, and clever engineering. And it is precisely this combination that researchers in the group of Prof. Stefanie Barz at the University of Stuttgart and the Center for Integrated Quantum Science and Technology (IQST) have delivered in recent study, in which they have improved the efficiency of an essential building block of many quantum devices beyond a seemingly inherent limit.

Historical foundations: from philosophy to technology.

Fyodor Urnov, PhD, is a pioneer in the field of genome editing and one of the scientists most invested in expanding the availability and utility of CRISPR-based therapies to the broadest possible population. He envisions a world in which genome editing can treat the nearly 400 million people who are suffering from one of the 7,000 diseases brought on by gene mutations.

The engine combines the right blend of power, performance, technology and efficiency.

A renowned automaker, typically known to introduce high-revving models that often found its competition in offerings from rival brands with double the cylinders, has now taken a bold step by unveiling a single-cylinder engine.

With a rich heritage dating back to 1926 when the company was founded in Bologna, Italy, Ducati has consistently… More.

Continue reading “Ducati unveils world’s most powerful single cylinder engine” »

“An exciting feature of these materials is their inherent simplicity—they need no electronics, no external power source,” said study senior author Shengqiang Cai, a professor of mechanical and aerospace engineering at the UC San Diego Jacobs School of Engineering. “We demonstrate how we can harness the power of nature to directly convert mechanical stimuli into light emission.”

Alginate, a polymer made from seaweed, was added to the dinoflagellates as the main components of the bioluminescent materials. These substances were combined to generate a solution, which was then processed by a 3D printer to produce an assortment of shapes.

During tests, the substances lit up when the scientists applied pressure and made patterns on their surface. The materials were so sensitive that even the weight of a foam ball moving across their surface caused them to glow.

The vessel was exhibited at the Maker Faire Rome 2023.

The PoliTo Sailing Team is a group of 90 students from the Polytechnic University of Turin and they are exhibiting at the Maker Faire Rome 2023, showcasing a boat that can literally fly over water.

IE spoke to a student of mechanical engineering Sara Cantalini from the Polytechnic University of Turin and a member of the new boat’s team.

Continue reading “This boat can fly over water literally” »

A team of researchers led by the University of California San Diego has developed soft yet durable materials that glow in response to mechanical stress, such as compression, stretching or twisting. The materials derive their luminescence from single-celled algae known as dinoflagellates.

The work, inspired by the bioluminescent waves observed during red tide events at San Diego’s beaches, was published Oct. 20 in Science Advances.

“An exciting feature of these materials is their inherent simplicity—they need no electronics, no external power source,” said study senior author Shengqiang Cai, a professor of mechanical and aerospace engineering at the UC San Diego Jacobs School of Engineering. “We demonstrate how we can harness the power of nature to directly convert mechanical stimuli into light emission.”

Study finds that in worms, the HSN neuron uses multiple chemicals and connections to orchestrate egg-laying and locomotion over the course of several minutes.

A new MIT

MIT is an acronym for the Massachusetts Institute of Technology. It is a prestigious private research university in Cambridge, Massachusetts that was founded in 1861. It is organized into five Schools: architecture and planning; engineering; humanities, arts, and social sciences; management; and science. MIT’s impact includes many scientific breakthroughs and technological advances. Their stated goal is to make a better world through education, research, and innovation.

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Researchers from the University of Waterloo’s Faculty of Engineering are developing a first-of-its-kind innovative system against fake news that relies on blockchain. Their goal? A world where people have greater trust in the news they see and hear.

It is already known that disinformation – especially digitally created – poses a great threat to democracy. There is evidence fake news could have influenced important world events like Brexit, the 2016 US elections, the Russia-Ukraine war, etc. Big tech companies like Facebook and Google have been trying to establish policies to prevent the spread of disinformation on their platforms, with limited success.