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Quantum physics

Non-grieving anions observed for the first time - a new technology for quantum computing?

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The non-Abelian anions are quasi-particles with fascinating statistical and topological properties. Until recently, these particles were only theoretical, but now a research group from Harvard University has created them for the first time in the laboratory. The discovery may encourage companies in the field of quantum computing to use non-Abelian anions to create durable qubits.
Tamar Stein. Credit - Uri Stein

The Hebrew University is a leader in entry-level ERC grants. Ten researchers will receive 17 million euros for five years 

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The number of wins by male and female Hebrew researchers places the university in first place among universities in Israel in terms of success rate among applications, with an increase of 5.5% compared to last year and it has the highest number of winners
The picture shows an energy band diagram of a micro-resonator based on a GaAs semiconductor as studied in the experiment, in which a quantum condensation of light-matter coupled quasi-particles called exciton-polaritons (exciton-polaritons) - through two-photon absorption. The achievement paves the way for new coherent control schemes and the realization of an efficient laser source in the terahertz (THz) range of electromagnetic radiation

First observation of "two-photon absorption for quantum condensation"

The achievement may accelerate research in new quantum technologies and developments in security, biological sensing, wireless communication and more
Hawking radiation from a black hole. Illustration: depositphotos.com

Everything in the universe is doomed to evaporate - Hawking's radiation theory is not limited to black holes

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A team of researchers confirmed Hawking's prediction of evaporating black holes, but extended its application to all large objects in the universe

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.
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

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.
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
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

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.
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. 
Prof. Yehoshua Zak, winner of the Israel Prize. Photo: Technion spokespeople

Prof. Yehoshua Zak - winner of the Israel Prize in Physics and Chemistry

The award was given to Prof. Zak for "developing mathematical tools such as 'Zak transformation' and 'Zak phenomenon' used to decipher the phenomena of electrical conduction in a magnetic field. These tools enable the prediction of materials with unique properties for the construction of electronic devices
Wave function, quantum physics. Illustration: depositphotos.com

Quantum theory affects the process of light emission

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Researchers from Tel Aviv University, the Technion and MIT teamed up to shed new light on quantum theory
Schrödinger's cat. Illustration: shutterstock

Basic concepts in quantum physics: what is the Schrödinger equation?

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The most famous quantum equation was published in 1926 on just two pages. What does she describe and how did Schrödinger think of her?
A sealed chip used to create a magnet-based informer. Photography: Yair Margalit

A device that will make it possible to answer one of the central questions in physics that remain unanswered

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More than 70 years ago, scientists in the field of physics came up with an idea to use magnetic fields and an atomic property called spin in order to put a body in two places at the same time. Now, a research group from Ben-Gurion University of the Negev has succeeded in implementing the idea and has even proposed an advanced version of the device that will provide future answers to one of the central questions in physics: Is there a connection between quantum theory and gravitation?
quantum wave. Illustration: depositphotos.com

Basic concepts in quantum physics: wave-particle duality

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Every week we will delve deeper into a physical idea known in popular literature and bridge the gap between what is shown in the media and what science really states. This time we will start with wave-particle duality, an elusive concept that sometimes raises more questions than answers, but in truth has long ceased to worry scientists
An atom is surrounded by electrons. Photo: depositphotos.com

Preliminary evidence for the hypothesis that the electron is not an elementary particle

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Led by researchers from the Institute of Physics at Princeton University, an initial discovery has been published that strengthens the controversial hypothesis that the electron is made up of two elementary particles: one carries a negative electric charge and the other the electron's spin. If the interpretation is indeed correct, the assumption that is more than a century old may be erased and make waves in the scientific community.
The device that Kotler and his colleagues built to create an interlacing between two tiny drums, thin membranes made of aluminum, and measure it. Photo courtesy of Florent LeCoq and Shlomi Kotler - US National Institute of Standards and Technology

A shadow of truth: thanks to a groundbreaking study published in Science - quantum entanglement emerges from the shadows

The researchers were able to directly observe the entangled quantum state of two mechanical drums, each with a size close to the diameter of a human hair.
wormhole Photo: depositphotos.com

Researchers from Germany: dark matter and the problem of hierarchy explained with the help of a fifth dimension

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Researchers around the world are looking for an explanation for the mystery of dark matter and the problem of hierarchy. The two problems seem completely different, but according to researchers from Johns Gutenberg University in Germany, both can be solved with the help of a compact fifth dimension. The estimated model does not contradict the experimental data discovered in current accelerators and predicts a new particle with a mass of 30TeV that may be discovered in future accelerators
Prof. Yitzhak Aployd. Photo: Nitzan Zohar, Technion Spokesperson

Schrödinger Medal for Research Prof. Yitzhak Apluig from the Faculty of Chemistry at the Technion

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magnet. Illustration: Image by W. v/d D. from Pixabay

The journey to the pole

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pigeon trap Illustration: The Hebrew University and the Weizmann Institute

A new means of measuring cold collisions

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Simulation of the experiment in which the first images of a quantum electronic crystal were obtained, the existence of which was predicted 80 years ago. The researchers saw electrons arranged as pearls in a string (red balls) along a nanowire. To observe the electrons without affecting them, a single electron (in green) carried by another nanowire was used as a sensor (scanning detector) that detected the electric fields created by the electrons in the crystal

like an electron on a wire

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Schrödinger's cat. Illustration: shutterstock

The quantum world is not as discrete as we thought and therefore it is possible to save Schrödinger's cat

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The heart of the detector in the XENON1T experiment. The copper rings shape the electric field used to transport the electrons

Scientists searching for dark matter have observed the rarest atomic decay ever measured

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