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Quantum physics

Invitation to an online lecture - all physics in one hour

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The lecture will be free. The date of the lecture will be announced, those interested are invited to register

Fundamental concepts in quantum physics: Bell's inequality - which was the basis of the Nobel Prize

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Inspired by the winners of the 2022 Nobel Prize in Physics, we will discuss Bell's theorem without introducing formulas and inequalities. In this article we will illustrate how experiments with entangled particles contradict the assumption that there are hidden variables and that quantum mechanics is indeed reliable.
Quantum entanglement. From the explanation on the Nobel Prize website.

Nobel Prize in Physics for 2022 to three scientists in the field of quantum entanglement

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In the photo, from right to left: Prof. Avi Israeli, chairman of BSF; Minister of Innovation, Orit Farkash HaCohen; Director General of the Ministry of Innovation, Science and Technology, Hila Hadad Hamelnik. Photo credit: Shmulik Almani.

A first agreement of its kind in the field of quantum was signed between Israel and the USA

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During the visit of the Minister of Innovation, Orit Farkash HaCohen to the USA, she meets with senior officials and businessmen in order to strengthen the technological cooperation between the countries - after the Jerusalem Declaration. And collaborations in the field of quantum between countries are not common, given the far-reaching strategic implications of this field
Hypothetical quantum waves. Image: depositphotos.com

There are many ways to the heart of quantum physics

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On Richard Feynman's alternative formalism for time-dependent quantum mechanics - and the classical approximations that make it convenient for implementation in physics and theoretical chemistry

The experiment that challenges dark energy

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A group of researchers from Nanjing University and the University of Science and Technology of China developed an experiment that tested a model for dark energy. The results of the experiment ruled out the model in question that predicted a fundamental fifth force in nature.
Scientific diagram: The journal Optica presents a new way to design an optical system to obtain the desired photonic entanglement - a collaboration between researchers from the Technion and Tel Aviv University. (credit SimplySci Animations)

A new way to create entangled photons

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Researchers from the Technion and Tel Aviv University have developed an innovative method to engineer quantum entanglement in a crystal, using computational learning tools
Consciousness at the molecular level. Image: depositphotos.com

The negated connection between quanta and consciousness

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A new article did an interesting experiment related to quantum theory and the study of consciousness. The results show that one of the well-known theories that claims that consciousness is created as a result of quantum measurement, is probably not true.
Gravitational waves

The breathing wave that proved a scientific theory

Another step towards quantum gravity

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Physicist Hikida from the University of Tokyo and his colleagues developed the dual model for Einstein's theory of gravity in three-dimensional de Sitter space. This is a significant step towards a model that will faithfully describe nature, i.e. the physics of quantum gravity under an expanding universe with a positive cosmological constant.
Higgs boson and Higgs field. Image: depositphotos.com

A decade of Higgs: what have we discovered, what is hidden and why is particle physics not dead?

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The new launch of the hadron accelerator in Geneva marks a decade since the discovery of the Higgs and opens a new decade of equally fascinating research. In this article we will review what we discovered and what questions remain open.
Celebrations at the CERN Control Center (CCC) to mark the start of the third run of the LHC (Photo: CERN)

The Large Hadron Collider in Sarn is back in operation

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In the third run, the particles will be bombarded with an energy intensity of 13.6 TeV, which may help to better understand the properties of the Higgs boson and its interaction with matter, and perhaps also discover clues about dark matter
Quantum tunneling. Photo: depositphotos.com

Does quantum tunneling cause genetic mutations?

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The human DNA molecule contains about three billion bases and replicates every day about two trillion times. For the cellular structure to be preserved, the replication process must be incredibly precise, but at the same time, the appearance of mutations shows that the process is not immune to errors. With the help of computer simulations, physicists and chemists from the University of Surrey In England they showed that errors in replication may occur due to quantum tunneling. 
The research students Yifat Baruchi and Yotam Mazuz-Harpaz test a measuring device in the laboratory

Light particles, dark particles

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Artificial particles, superfluid and supersolid will be characterized by the flow of electrons with zero friction, at relatively high temperatures
The JET magnetic fusion experiment is the world's largest tokamak. EFDA JET/WikimediaCommons, CC BY-SA

Improving the sides of nuclear fusion reactors - progress towards new energy solutions

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Nuclear fusion reaches a milestone thanks to better reactor walls - this engineering development leads to the reactors of the future, say researchers following a successful UK experiment
A surfer carried on a big wave. Illustration: depositphotos.com

How are waves formed in the sea?

Researchers have cracked the scientific mystery of the formation of sea waves using a theoretical model
In the picture you see a large collection of the "quantum trajectories" of the polaritons, where the distance from a certain reference point (the end of the tail seen in the upper right picture, the starting point of the simulation) is a measure of the number of polaritons. Additional polaritons are injected from outside and others disappear randomly (escape from the resonance cavity). The "tracks" start from the same point but then separate from each other due to the random occurrences, which differ from track to track. The frequency of the injected photons varies from image to image. Chaos appears in the upper right image, and in the lower left (the large bright area).

Shedding light on the chaos with a quantum chip

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Physicists at Ben-Gurion University are the first to try to understand the properties of chaos using a quantum chip. They mobilized light particles to simulate chaos and were able to predict correlations that indicate it
The butterfly hunter from the Jezreel valley dreamed of studying biology, until he came across an old physics book and discovered that natural phenomena can be calculated with mathematical tools. You are here Home > Publications > Milestone > In a nuclear shell Share tags Yigal nuclear thalamiphysics The shell model When the Soviet government closed the schools that taught Hebrew, Prof. Ben-Zion Dinburg (later Dinor, Minister of Education and Culture) arranged immigration licenses ("certificates") for teachers in the hope of bringing them to kibbutzim and moshavim. Thus, four years after the founding of Kfar Yehezkel, the second workers' settlement in the Land of Israel, the Ptolemy (formerly Smilansky) family, who immigrated from Ukraine in 1925, joined its ranks: the parents Moshe and Leah, teachers of Hebrew, their daughter Tahia, about ten years old, and their toddler son, Yigal, less than one year old. On the ship that arrived from Odessa to Jaffa there were two more families of teachers, but they stayed in Tel Aviv, which seemed quite pioneering to them. Yigal grew up in Moshav at the foot of the Gilboa, in the heart of the Jezreel Valley, and studied until the XNUMXth grade at the school in the village that his father ran (one of his students, Azaria Alon, wrote highly of Moshe Ptolemy). The XNUMXth grade was in the Geva group, and Vigal and four other boys walked to the Geva every morning. When it rained and water flowed in the wadi between the settlements, crossing was not possible. Prof. Yigal Ptolemy. Contributed a lot to shaping the image of the Weizmann Institute

in the nuclear envelope

The butterfly hunter from the Jezreel Valley dreamed of studying biology, until he came across an old physics book and discovered that natural phenomena can be calculated with mathematical tools
Darkness, concentrate a moment. From the study. Tel Aviv University

Darkness, concentrate a moment

Researchers have proven that darkness can be focused just as light can be focused
Atomic clock. Illustration: shutterstock

What is the national atomic clock and why is it constantly listening to navigation satellites?

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On the occasion of the winter solstice, which began today, Dr. Nadia Goldovski - the person in charge of time and frequency measurements at the National Physics Laboratory at the Ministry of Economy and Industry, explains in an interview to the science website how the time is set in her laboratory using atomic clocks
Quantum entanglement. Illustration: depositphotos.com

Commendation to an Israeli researcher in the field of quantum entanglement

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The award was awarded to researcher Dr. Shlomi Kotler from the Hebrew University by the British Association of Physicists for his research on quantum entanglement 
vortex. Illustration: depositphotos.com

Vortex of one atom

The institute's scientists and their research partners from the Technion and Tel Aviv University have for the first time created mixed beams of individual atoms
Artist simulation for a particle physics experiment. Credit – Jefferson Lab.

A first international experiment of its kind has confirmed the theory of particle physics that there is no evidence for the existence of a fourth neutrino

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The experiment, with the participation of nearly 200 physicists from different countries, was conducted at the Fermilab National Laboratory in the United States. The team of experts from Israel included two research groups, Dr. Adi Ashkenazi and Prof. Eli Pisatsky from the School of Physics and Astronomy at Tel Aviv University
Prof. Luigi Amico. Photo TII

Researchers are turning their attention to the post-electronic future

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Atomtronics, a field that focuses on finding ways to transfer whole atoms instead of electrons as in traditional electronic devices is still in its infancy, but has the ability to open a new direction of technological innovations
Neutrino particles. Illustration: depositphotos.com

Looking for the fourth neutrino particle - the "barren"

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An Illinois Tech physicist has a hand in groundbreaking findings in the search for new neutrino particles in the universe
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