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Nanotechnology is moving from the realm of science fiction to reality, and in the process, these tiny technologies are offering giant opportunities.

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Credits:
Nanotechnology: The Future of Everything.
Episode 481a; January 12, 2025
Produced, Narrated \& Written: Isaac Arthur.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator.
Stellardrone, \

Breaking the limits of light control: non-hermitian silicon photonic switching.

Imagine a new way of controlling [#light](https://www.facebook.com/hashtag/light?__eep__=6&__cft__[0]=AZXWUWLMvFSlCWqwebCELVs4-fbCMnldCKnIVGZrgtNUTRTTYSpzFXQZE36EXaisrk4LktWLvfOHDWvPYLl3repY1GFTT1cBs7NW6b5tSZsCm6hrhxySUves0ATBtZTjr9RkS4buJBybFVuHrOjdR8CZM25CUC_y1s-Pyhej3ftz6g&__tn__=*NK-R) that defies conventional expectations, enabling faster and more efficient communication networks. This is the promise of non-Hermitian photonics, a cutting-edge field that manipulates light using the full range of complex optical properties, including gain and loss. By carefully balancing these properties, researchers have unlocked surprising behaviors, such as the ability for light to flow in counterintuitive ways.

In this study, scientists have created a revolutionary non-Hermitian switching network on a tiny, two-layer photonic chip. The chip is a hybrid design, combining a bottom silicon layer with a top layer made of indium gallium arsenide phosphide (InGaAsP), a material that amplifies light. This combination allows light to be controlled with remarkable precision.

The secret lies in a phenomenon called exceptional points, where the interaction of gain and loss reaches a critical balance, resulting in unique optical effects. By adjusting the light amplification in the top layer, the researchers can dynamically switch light between the two layers of the chip. This switching occurs in an astonishingly short time—just 100 picoseconds (a picosecond is one-trillionth of a second).

What’s even more impressive is the scalability of this system. The researchers demonstrated that the chip could handle large networks of switches, enabling flexible and diverse connections. These connections support both single-wavelength and wavelength-selective operations, crucial for modern optical communication systems. The switches also achieve high extinction ratios, meaning they are exceptionally efficient at directing light where it needs to go.

This breakthrough adds a powerful new tool to the [#photonics](https://www.facebook.com/hashtag/photonics?__eep__=6&__cft__[0]=AZXWUWLMvFSlCWqwebCELVs4-fbCMnldCKnIVGZrgtNUTRTTYSpzFXQZE36EXaisrk4LktWLvfOHDWvPYLl3repY1GFTT1cBs7NW6b5tSZsCm6hrhxySUves0ATBtZTjr9RkS4buJBybFVuHrOjdR8CZM25CUC_y1s-Pyhej3ftz6g&__tn__=*NK-R) design arsenal, paving the way for ultrafast, compact, and high-bandwidth integrated photonic systems. Such advancements could transform next-generation optical networks, enabling faster internet speeds, more reliable communication, and improved data handling in our increasingly connected world.


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Hello and welcome! My name is Anton and in this video, we will talk about the potential dangers of mirror life.
Links:


https://theconversation.com/mirror-life-forms-may-sound-like…ent-246013
https://www.nature.com/articles/s41565-024-01627-z.
https://www.nature.com/articles/s41557-023-01411-x.
Previous videos:


https://youtu.be/0MRGJNKACYs.
https://youtu.be/L1wkR-92Rys.
#chirality #biology #mirrorlife.

0:00 Mirror life?
0:40 Chirality and handedness of molecules and why it’s important.
2:40 Recent advances in biochemistry.
3:45 New technical report warns science.
4:50 All life is handed.
6:00 What this could do in theory.
7:45 Conclusions and additional propositions.

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DARPA seeks to revolutionize the practice of anti-money laundering through its A3ML program. A3ML aims to develop algorithms to sift through financial transactions graphs for suspicious patterns, learn new patterns to anticipate future activities, and develop techniques to represent patterns of illicit financial behavior in a concise, machine-readable format that is also easily understood by human analysts. The program’s success hinges on algorithms’ ability to learn a precise representation of how bad actors move money around the world without sharing sensitive data.


DARPA wants to eliminate global money laundering by replacing the current manual, reactive, and expensive analytic practices with agile, algorithmic methods.

Money laundering directly harms American citizens and global interests. Half of North Korea’s nuclear program is funded by laundered funds, according to statements by the White House1, while a federal indictment alleges that money launderers tied to Chinese underground banking are a primary source of financial services for Mexico’s Sinaloa cartel 2.

Despite recent anti-money laundering efforts, the United States (U.S.) still faces challenges in countering money laundering effectively for several reasons. According to Congressional research, money laundering schemes often evade detection and disruption, as anti-money laundering (AML) efforts today rely on manual analysis of large amounts of data and are limited by finite resources and human cognitive processing speed3.

An exploration of how the development of molecular nanotechnology could affect whatever is the solution to the Fermi Paradox.

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The British-Canadian computer scientist often touted as a “godfather” of artificial intelligence has shortened the odds of AI wiping out humanity over the next three decades, warning the pace of change in the technology is “much faster” than expected.

Prof Geoffrey Hinton, who this year was awarded the Nobel prize in physics for his work in AI, said there was a “10% to 20%” chance that AI would lead to human extinction within the next three decades.

In science fiction we often see immense starships attacking planets, crushing or besieging them, but in our own future we may deploy powerful orbital fortresses to defend our world.

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Credits:
Orbital Defense Platforms.
Episode 423b; December 3, 2023
Produced, Written \& Narrated by: Isaac Arthur.

Graphics:
Fishy Tree.
Jarred Eagley.
Jeremy Jozwik.
Ken York/YD Visual.
Legiontech Studios.
Rapid Thrash.
Sergio Botero.
SpaceResourcesCGI
Udo Schroeter.

Music Courtesy of:
Epidemic Sound http://epidemicsound.com/creator.
Stellardrone, \

Could the secret to the Great Silence be that individuals or groups might abandon civilization to live off-grid in deep space, far from neighbors or threats, by leveraging advanced technology for autonomy and survival.

Watch my exclusive video Post-Stellar Civilizations: https://nebula.tv/videos/isaacarthur–
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Use the link gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $30.

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Credits:
The Fermi Paradox: Hermit Hypothesis.
Episode 479; December 26, 2024
Produced, Narrated \& Written: Isaac Arthur.
Graphics: Jeremy Jozwik, LegionTech Studios, Sergio Botero.
Select imagery/video supplied by Getty Images.
Music Courtesy of Epidemic Sound http://epidemicsound.com/creator

The course of evolution on Earth was altered by a series of severe environmental crises caused between 185 and 85 million years ago in the oceans, according to scientists.

The phenomenon, described as a ‘tag-team’ between the oceans and continents, severely harmed the marine life which existed during that phase and also changed the evolution course on our planet.

The oceanic anoxic events, as per the term given by the researchers, occurred when the dissolved oxygen in the water depleted to a critically low level.

An exploration of whether mass extinction events lead to a higher likelihood of intelligence and complexity of life on earth and exoplanets.

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