Lifeboat Foundation

Quantum money underpinned by the mathematics of knots could be impossible to forge.

Since the discovery of genetics, people have dreamed of being able to correct diseases, select traits in children before birth, and build better human beings. Naturally, many serious technical and ethical questions surround this endeavor. Luckily, tonights’ guest is as good a guide as we could hope to have.

Dr. Steve Hsu is Professor of Theoretical Physics and of Computational Mathematics, Science, and Engineering at Michigan State University. He has done extensive research in the field of computational genomics, and is the founder of several startups.

#geneticengineering #intelligence

We’ve met with Mojo Vision for several CESes, watching the startup’s AR contact lenses develop, year by year. These sorts of things take a lot of time and money, of course — and these days it seems increasingly difficult to find either. Today, the California-based firm announced that it is “decelerating” work on the Mojo Lens, citing, “significant challenges in raising capital.”

In an announcement posted to it site, CEO Drew Perkins blames insurmountable headwinds, including the bad economy and the “yet-to-be proven market potential for advanced AR products” in its ability to raise the necessary funding required to keep the project afloat.

“Although we haven’t had the chance yet to see it ship and to reach its full potential in the marketplace, we have proven that what was once considered science fiction can be developed into a technical reality,” Perkins writes. “Even though the pursuit of our vision for Invisible Computing is on hold for now, we strongly believe that there will be a future market for Mojo Lens and expect to accelerate it when the time is right.”

Skeptical technology experts believe the declaration is a hoax intended to cause panic.

Over the past few decades, several imaging protocols based on quantum technologies have been realized^1,2, which have expanded the application capabilities of optical imaging. These include ghost imaging (GI)^3,4, quantum imaging with undetected photons (QIUP)⁵, and interaction-free measurements (IFMs)^6,7. The quantum GI scheme relies on the spatial correlations of entangled photon pairs and requires two-photon coincident measurements. Furthermore, ghost imaging can also be realized with classical intensity-fluctuation correlations⁸. Later, various single-pixel imaging (SPI) protocols were proposed^{9,10,11,12,13}, where the spatial correlations are not between two photons but between one photon and a programmable mask held in a spatial light modulator (SLM).

In contrast to modern digital cameras employing array sensors to capture images, SPI use a sequence of masks to interrogate the scene along with the correlated intensity measurements by a single-pixel detector. The spatially resolved masks are usually generated by computer and displayed by SLM. Combined with compressive techniques¹⁰, the number of sampling measurements is fewer than the total number of pixels in the image. Thereby, SPI can reduce the data processing requirement, and shows potential capability for high dimensional sensing¹². On the other hand, the modern single-photon detector is featured by improved detection efficiency, lower dark counts, and faster timing response¹⁴. Such enhancements have significance to applying SPI into weak signal detection scenarios, such as scattering medium imaging or long-range 3D imaging¹¹.

The QIUP scheme is based on induced coherence (IC), which was first proposed by Zou, Wang, and Mandel¹⁵. They used two photon sources to generate photon pairs. By overlapping path of two sources for one photon (idler)^15,16,17 and establishing the so-called path identity^18,19, there is no information about the origin of the other photon (signal). Thus, the signal photon is in the superposition state of being created in either of the sources. The phase and transmissivity of the idler photon are encoded in the interference of the signal photon. Inserting one object onto the idler path between two sources, one can obtain images exclusively with the signal photons which have no interaction with the object⁵. In contrast to GI, QIUP does not involve the detection of the photon illuminating the object or any coincidence measurement. This is an advantage of QIUP, as the wavelength of the detected photon can be chosen independently from that of the photon interacting with the object⁵. This concept was further explored in infrared (IR) spectroscopy²⁰, optical coherence tomography^21,22, mid-IR imaging^23,24,25, terahertz (THz) sensing²⁶, biological microscopy²⁷, and holography²⁸. Recently, the related SU(1,1) interferometer has been investigated and employed in quantum-enhanced metrology^{29,30,31,32,33}.

It has long been known that one day quantum computers will probably be able to crack the RSA encryption method we use to keep data safe, but a team of researchers is now claiming it is already possible, while others say the results require more scrutiny.

A discussion of the most unsettling solutions to the fermi paradox.
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2:33 Beginning.

Continue reading “The Most Unsettling Solutions to the Fermi Paradox With Stephen Webb” »

In other words, what appears to be emergent to us today, with our present limitations of what its within our power to compute, may someday in the future be describable in purely reductionist terms. Many such systems that were once incapable of being described via reductionism have, with superior models (as far as what we choose to pay attention to) and the advent of improved computing power, now been successfully described in precisely a reductionist fashion. Many seemingly chaotic systems can, in fact, be predicted to whatever accuracy we arbitrarily choose, so long as enough computational resources are available.

Yes, we can’t rule out non-reductionism, but wherever we’ve been able to make robust predictions for what the fundamental laws of nature do imply for large-scale, complex structures, they’ve been in agreement with what we’ve been able to observe and measure. The combination of the known particles that make up the Universe and the four fundamental forces through which they interact has been sufficient to explain, from atomic to stellar scales and beyond, everything we’ve ever encountered in this Universe. The existence of systems that are too complex to predict with current technology is not an argument against reductionism.

Interest in gallium lagged in the past, partly because of the unfair association with toxic mercury, and partly because its tendency to form an oxide layer was seen as a negative. But with increased interest in flexible and, especially wearable electronics, many researchers are paying fresh attention.

To make bendable circuits with gallium, scientists form it into thin wires embedded between rubber or plastic sheets. These wires can connect tiny electronic devices such as computer chips, capacitors and antennas. The process creates a device that could wrap around an arm and be used to track an athlete’s motion, speed or vital signs, for instance, says Carmel Majidi, a mechanical engineer at Carnegie Mellon University.