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Quantum physics

Prof. Ado Kaminer in his laboratory. Photo: Nitzan Zohar, Technion Spokesperson

Towards the discovery of quantum phenomena that have not yet been observed: Prof. Ado Kaminer of the Technion won an ERC Consolidator grant

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"The observations will be made possible through the control we have developed over the wave nature of free electrons," explains Prof. Kaminer
From the left, Prof. Franz Krause, and Prof. Anne L'Ollier during the ceremony of receiving the Wolf Prize from the President of Israel Yitzhak Herzog. Photo courtesy of the Wolf Foundation

Nobel Prize in Physics for 2023 to researchers who managed to measure tiny and fast processes in electrons

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The 2023 Nobel Prize in Physics was awarded to three researchers: Pierre Agostini, Ferenc Krausz and Anne L'Huillier for "the development of their methods that produce extremely short attosecond pulses of light For the study of the dynamics of electrons inside the material"
DALEE 2's interpretation of the matter of floating anti-matter atoms.

For the first time, the free fall of antihydrogen atoms was measured and the effect of gravity on antimatter was discovered

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"This is the first measurement ever made of the free fall of antimatter (antihydrogen) atoms that directly shows that they really fall down," explained Prof. Eli Sharid from the Physics Department at Ben-Gurion University of the Negev, the member of the ALPHA collaboration group
Crystal pump to generate quantum light for medical imaging devices. Photo courtesy of Shalom Schwartz

CAT scan for Schrödinger's cat

Quantum effects in X-rays make it possible to improve the resolution of the scan and protect the health of subjects and doctors
Laser in a physics lab. Illustration: depositphotos.com

A new method of creating quantum light sources will help in encryption and solving security problems

Prof. Adi Aryeh: "We are standing at the threshold of a new technological world, and with it comes a host of new opportunities alongside a host of problems we have not yet encountered."
Higgs boson. Illustration: depositphotos.com

Physicists have developed tools to discover unknown interactions between elementary particles. Are we on the way to a new physics?

Prof. Yael Shadami from the Faculty of Physics at the Technion focuses on the study of elementary particles including electrons, quarks, photons and gluons, and the interactions, or forces, that act between them. It tries to discover more elementary particles and interactions, beyond those described in the "standard model" of particle physics
"Scale of Polarizations"

electronic skips

Researchers have built surfaces from layers of atoms that slide over each other, thus causing the electrons inside to skip. In the future, they hope that it will be possible to develop advanced information technologies based on them

Three free lectures in honor of World Quantum Day on May 10

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On May 10, three lectures in the field of quantum will be delivered to the general public, zoomed and free of charge. The event is being held in honor of World Quantum Day under the auspices of the Center for Quantum Information at the Hebrew University. No need to register in advance.

For the first time: the experiment of the two cracks in the timeline

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In an article published in the magazine Nature Physics, a team of researchers from Britain, the USA, Germany and Australia demonstrated for the first time the two cracks experiment in the timeline. Instead of spatial dispersion on a screen, the temporal crack created a dispersion in the light spectrum, and from the combination of another crack an interference pattern similar to the spatial pattern from the classic experiment was created. The experiment opens a window for the construction of time-varying optical instruments in a reliable and stable manner.

Will a muon accelerator save particle physics?

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In recent years, physicists from around the world have been discussing the construction of a muon accelerator instead of other conventional accelerators based on protons or electrons. Such an accelerator has clear advantages in discovering new physics, but its construction is accompanied by many technological challenges. In this article I will review the words of Prof. Nima Arkani-Hamed from the Institute for Advanced Studies in Princeton on the need to build such an accelerator.
Premilab campus near Chicago. Photo courtesy of the Permilab National Laboratory

The largest particle accelerator in the US will undergo an upgrade and reopen after more than a decade of shutdown

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The upgrade is expected to last several years and will include the construction of a new building to house the upgraded accelerator. Permilab is also planning to build a new particle detector, which will be used to study the particles produced by the Tevatron.
Photomicrograph of superconducting (presumably) NLH. The model shown above has a diameter of one millimeter. credit: J. Adam Fenster/Univ. of Rochester

Thunderous silence following the claims of finding a conductor at room temperature

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Has a room temperature conductor finally been discovered? very doubtful The scientific community suspects the reliability of the findings and the reason for this is clear, the researcher who signed the disclosure claimed this in the past and was repelled by his colleagues claiming errors in the experiment.
A sealed chip used to create a magnet-based informer. Photo: Prof. Ron Polman's laboratory, Ben Gurion University

to be in two places at the same time

Scientists are trying to answer one of the biggest open questions in physics

The advantage of entangled photons in material characterization

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Led by doctoral student Mamon Safdi and Professor Yaron Bromberg from the Hebrew University, an experiment was carried out that demonstrates for the first time a substantial advantage in characterizing materials using entangled photons over classical light. The experiment published in the prestigious journal Nature Physics measured the light from entangled photons that were backscattered from a non-static scatterer. The results of the experiment showed that entangled photons reduce the measurement error by four times than non-entangled light, thus breaking the Kramer-Rao barrier for classical light.
Quantum communication satellite. Illustration: depositphotos.com

Tel Aviv University inaugurated the first satellite observatory for quantum optical communication

The observatory, one of the most advanced in the world, will be used for tracking, sensing, hyperspectral photography and optical and quantum communication with satellites in orbit around the Earth
Light with special chiral properties - a rotating field in the shape of the number 8. Courtesy of the researchers

An electron on the run

The scientists of the institute and their research partners showed that the chance of an electron to pass through a tunnel at the junction between a molecule and a light field, and the manner in which it will do so, depend to a large extent on the chirality of both the molecule and the light
The diagram simulates our algorithm for playing cards. The immediate effect of measuring one qubit on the others is similar to covert communication between players. Quantum computers use this effect to win the game with a higher probability compared to classical players. The diagram combines from left to right: 1) card game, 2) quantum circuit, 3) coin lottery (probability), 4) measurement of the qubits, 5) use of a classical algorithm that reduces the amount of noise, 6) analysis of the results. Design: Yael Barnea

Beats under influence

Researchers developed an algorithm that showed a basic quantum phenomenon: the immediate effect of one variable on other variables

First simulation of a wormhole on a quantum computer

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A team of researchers from Harvard University, MIT and Calcutta in collaboration with Google successfully simulated a traversable wormhole with the help of a quantum computer. The experiment performed on Google's quantum processor demonstrated the passage of information in the interlaced system. According to the principle of holography, the physics demonstrated in the experiment is the same as that of particles passing through wormholes. Although it was conducted on only nine qubits, the experiment is of great importance because it illustrates for the first time the possibility of testing quantum gravity with the help of entangled systems.

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
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