Forum Store Events About Science Research Courses DONATE Login

 

Science News
& Faculty Articles

 

Is Spacetime A Quantum Code?

by Dr. Olivier Alirol, Resonance Science Foundation Research Scientist

In 2014, physicists found evidence of a deep connection between quantum error correction and the nature of space, time and gravity. Generally, gravity is defined as the fabric of space and time but beyond Einstein’s theory, there must be a quantum origin from which the space-time somehow emerges.

The three physicists at the origin of this discovery, Ahmed Almheiri, Xi Dong and Daniel Harlow, suggested that a holographic “emergence” of space-time works just like a quantum error-correcting code. In their paper “Bulk Locality and Quantum Error Correction in AdS/CFT” published in its first version in November 2014, they showed that space-time emerges from this quantum error correction code in an anti-de Sitter (AdS) universes.

The discovery is opening a new way to capture more properties of space-time.

From left: Ahmed Almheiri, Xi Dong and Daniel Harlow originated a powerful new idea...

Continue Reading...

The Casimir Torque validated experimentally for the first time

by Inés Urdaneta, Resonance Science Foundation Research Scientist

The Casimir effect, responsible for the attraction of two neutral metallic plates separated 1 micron apart, is one of the most outstanding features of the vacuum influence on the macroscopic world, and has been discussed in former articles. The effect has been measured in a variety of experimental setups, but this is the first time its associated torque has been verified experimentally. The so-called Casimir torque, predicted more than 40 years ago, is a mechanical torque between two optically anisotropic materials, and depends on the electromagnetic fluctuations (EM) of the vacuum -known as vacuum fluctuations- as well as on the dielectric function of the materials, which describes the capacity of an internal charge reorganization property within the material. Optically anisotropic means that the refractive index of the material depends on the polarization and propagation direction of the electromagnetic...

Continue Reading...

Crossing the Event Horizon with Loop Quantum Gravity

Article by Dr. Olivier Alirol, Resonance Science Foundation Research Scientist

Black Holes are the most powerful objects known in the Universe. And yet their physic remains to be discovered. For example, collapsing matter may not disappear at their center. It could bounce inside and, energy and information that fell into the black hole could emerge from the white hole. Hawking suggested once using these objects as a worldwide power plant. “A mountain-sized black hole would give off X-rays and gamma rays at a rate of about 10 million megawatts, enough to power the world’s electricity supply. It wouldn’t be easy, however, to harness a mini black hole. You couldn’t keep it in a power station, because it would drop through the floor and end up at the center of the Earth.” Black Holes are surprising singularities which are windows onto physics beyond Einstein and there is still no complete answers on how they really work.

One important question is about how...

Continue Reading...

Inner Clocks and Future Prediction

Article by Dr. Johanna Deinert, Resonance Science Foundation Research Scientist

Researchers from University of California – Berkeley found two clocks in our brains with different functions. The paper authored by Assaf Breska and Richard B. Ivry from the Departement of Psychology was published lately in PNAS. There are different locations in the reptilian parts of our brain (the brainstem) where we process present and anticipative time. As well as our sense of orientation in space of the body, our orientation in time is processed by the cerebellum. The anticipatory part is processed in the basal ganglia, meaning the most advanced system of the reptilian brain and the connection to the higher operative systems of the grey matter. One of these basal ganglia is the Thalamus, referred to as “the gate to consciousness” by medical textbooks. It is as well the generator of the brainwave frequencies, hence our conscious activity...

Continue Reading...

The Elusive Electric Dipole Moment

Article by Dr. Amira Val Baker, Resonance Science Foundation Research Scientist

Precise measurements of the electron dipole moment (EDM) may help solve unanswered questions about our universe.

The standard model of particle physics accurately describes all particle physics measurements made so far in the laboratory. However, although it aims to describe our observable universe, from the very big to the very small, it currently leaves many questions open for debate. One such question is – why is our Universe predominantly ordinary matter and not anti-matter?

Back in 1967, the Russian scientist Andrei Sakharov recognized that a possible reason for this asymmetry could be the occurrence of CP violation – that is the charge (C) and parity (P) combined symmetry is not conserved as expected. Sakharov suggested that matter and anti-matter were present in equal quantities in the early universe and that asymmetry developed with the occurrence of CP violation – most probably...

Continue Reading...

Quantum Physics Working at the Macroscopic Scale

Article by Dr. Olivier Alirol, Resonance Science Foundation Research Scientist

Quantum physics is the general term for a set of physical approaches born in the 20th century which, like the theory of relativity, marks a break with what is now called classical physics. Thus, the so-called “quantum theory” describes the often non-intuitive behaviors of atoms, photons and other particles – something that classical physics could not do.

Today, we know how to produce, using experimental optic methods, twin photon pairs whose properties are perfectly described by quantum physics. Although composed of two particles, these objects must be considered as a whole, from the moment photons are created to the moment they are detected. This quantum phenomenon is fundamental for example in quantum optics because classical physics does not allow any correlation. It is therefore necessary to deeply understand not only their origin, but above all which external parameters could...

Continue Reading...

An Approach to Manipulate Small Objects with Light

Article by Dr. Olivier Alirol, Resonance Science Foundation Research Scientist

Suspected from the outset Kepler’s observations of comet tails, the fact that light exerts forces on matter, and therefore on objects is now well established. Thanks to the work of Arthur Ashkin among many others, optical traps are now a reality. Using laser beams optical levitation of microspheres is used nowadays in many applications from stretching DNA to nanotechnology, spectroscopy, stochastic thermodynamics and critical Casimir forces.

Structuring light makes optical manipulation techniques possible, like using the Spatial Light Modulators (SLMs) to produce holographic optical traps (HOTs). These Spatial Light Modulators are liquid crystal technology with a fast and precise control of the beam shape used to control multiple particles in 2D and 3D configurations.

Previously holographic traps were limited to particular classes of light (scalar light), so it is very exciting that we can reveal a...

Continue Reading...

Time Crystals: A New Form Of Matter That Could Change Everything!

Article by Dr. Amira Val Baker, Astrophysicist, Resonance Science Foundation Research Scientist

Of all the science-fiction-sounding names that have come to fruition in recent years, perhaps none is as mysterious or seemingly fictitious as time crystals. The name evokes something between Back to the Future and Donnie Darko, and the reality is perhaps crazier than either.

Two separate groups of scientists recently reported that they observed time crystals, which lends credence to the idea that this theoretical state of matter is something humans can actually create and observe. And indeed, time crystals can be grown in a child’s bedroom.

However, it requires nuclear sensors and lasers to help time crystals reach their full potential and then measure and observe them. This combination of dramatic scientific terms and shockingly simple objects is a great analogy for time crystals as a whole.

Read on to understand what they are and how they might affect our lives.

...
Continue Reading...

New Measurement of the Roundness of the Electron

Article by Dr. Oliver Alirol, Physicist, Resonance Science Foundation Research Scientist

Point particle, electron cloud, if the electron is actually a physical object with a finite size, then how big is it. Surprisingly, there is yet no clear answer to this simple question. However, some theories turn out to be pretty interesting such as the Bohr radius (10-10m), the classical electron radius (10-15m), the Compton Wavelength (10-12m), the Planck length (point particle 10-35m), or finally the empiricist’s view with the measurement of the electron electric dipole moment (EDM).

Some theories suggest that some subatomic particles outside the electron could create a slight separation between a positive and a charge, giving the electron a pear shape. However, a new measurement from the ACME team at Yale suggests that any extra particles that exist may be permanently beyond the LHC’s reach.

We’re gonna need a bigger tunnel.

Yale University physicist David DeMille, a...

Continue Reading...

A Physics Nobel Prize for a New Way of Manipulating Light

by Dr. Olivier Alirol, Physicist, Resonance Science Foundation Research Scientist

Three scientists on Tuesday won the Nobel Physics Prize, including the first woman to receive the prestigious award in 55 years, for inventing Chirped-pulse amplification, or CPA. The 9-million-Swedish-kronor award (about $1 million) will be doled out to Arthur Ashkin of Bell Laboratories in Holmdel, N.J., Gérard Mourou of École Polytechnique in Palaiseau, France, and Donna Strickland of the University of Waterloo in Canada.

This is a technique for creating ultrashort, yet extremely high-energy laser pulses necessary in a variety of applications. It is remarkable what can be achieved with lasers in research and in applications, and there are many good reasons for it, including their coherence, frequency stability, and controllability, but for some applications, the thing that really matters is raw power.

With this he was able to use the radiation pressure of light to move tiny...

Continue Reading...
Close

50% Complete

Two Step

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.