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Physics news
Magnetic avalanche triggered by quantum effects: 'Barkhausen noise' detected for first time
Iron screws and other so-called ferromagnetic materials are made up of atoms with electrons that act like little magnets. Normally, the orientations of the magnets are aligned within one region of the material but are not ...
Condensed Matter
11 hours ago
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234
Plasma fusion: Adding just enough fuel to the fire
How much fuel can we add to the fire while still maintaining control? Metaphorically speaking, that's the question one team at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) has been asking themselves ...
Plasma Physics
11 hours ago
1
116
Study unveils a spontaneous toroidal polar topology in the helielectric nematic state
Magnetic and electric dipoles, objects with two oppositely charged ends, have a similar symmetrical structure. One might thus assume that they exhibit similar internal structures and physical states.
A method to compute the Rényi entanglement entropy in auxiliary-field quantum Monte Carlo simulations
Entanglement is a widely studied quantum physics phenomenon, in which two particles become linked in such a way that the state of one affects the state of another, irrespective of the distance between them. When studying ...
Quantum computing just got hotter: One degree above absolute zero
For decades, the pursuit of quantum computing has struggled with the need for extremely low temperatures, mere fractions of a degree above absolute zero (0 Kelvin or –273.15°C). That's because the quantum phenomena that ...
Quantum Physics
14 hours ago
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209
Researchers find first experimental evidence for a graviton-like particle in a quantum material
A team of scientists from Columbia, Nanjing University, Princeton, and the University of Munster, writing in the journal Nature, have presented the first experimental evidence of collective excitations with spin called chiral ...
Condensed Matter
17 hours ago
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689
From Earth to Mars: Transporting spin information at the speed of light
Scientists have used electrical pulses to manipulate magnetic information into a polarized light signal, a discovery that could revolutionize long-distance optical telecommunications, including between Earth and Mars.
Condensed Matter
15 hours ago
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55
Scientists suggest new methods to expedite the commercialization of metalens technology
Metalenses, nano-artificial structures capable of manipulating light, offer a technology that can significantly reduce the size and thickness of traditional optical components. Particularly effective in the near-infrared ...
Optics & Photonics
17 hours ago
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26
Realizing clean qubits for quantum computers using electrons on helium
Future quantum computers could be based on electrons floating above liquid helium, according to study by a RIKEN physicist and collaborators, appearing in Physical Review Applied.
Condensed Matter
16 hours ago
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125
Advancing quantum networks: Study achieves largest photon emission enhancement for single T center to date
Rice University engineers have demonstrated a way to control the optical properties of atomic imperfections in silicon material known as T centers, paving the way toward leveraging these point defects for building quantum ...
Optics & Photonics
17 hours ago
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5
An on-chip photon-counting reconstructive spectrometer with tailored cascaded detector array
Superconducting nanowire single-photon detectors (SNSPDs) have been widely used in various applications requiring single photon detection thanks to their attractive performances. Since SNSPDs are thin films of serval nanometers ...
Optics & Photonics
11 hours ago
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1
New topological metamaterial amplifies sound waves exponentially
Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of ...
Condensed Matter
Mar 27, 2024
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380
Physicists propose new way to search for dark matter: Small-scale solution could be key to solving large-scale mystery
Ever since its discovery, dark matter has remained invisible to scientists despite the launch of multiple ultra-sensitive particle detector experiments around the world over several decades.
General Physics
Mar 27, 2024
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Unlocking visible femtosecond fiber oscillators: An advance in laser science
The emergence of ultrafast laser pulse generation, marking a significant milestone in laser science, has triggered incredible progress across a wide array of disciplines, encompassing industrial applications, energy technologies, ...
Optics & Photonics
Mar 27, 2024
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Researchers identify new method to boost laser processing resolution
Focusing a tailored laser beam through transparent glass can create a tiny spot inside the material. Researchers at Tohoku University have reported on a way to use this small spot to improve laser material processing, boosting ...
Optics & Photonics
Mar 27, 2024
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101
A new type of cooling for quantum simulators
Quantum experiments always have to deal with the same problem, regardless of whether they involve quantum computers, quantum teleportation or new types of quantum sensors: quantum effects break down very easily. They are ...
Condensed Matter
Mar 27, 2024
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New design for a small, highly sensitive gravimeter that can operate stably at room temperature
A team of physicists and engineers affiliated with several institutions in China has developed a new kind of small, highly sensitive gravimeter that can operate stably at room temperature. In their project, reported in the ...
What is the '3 Body Problem'? Astrophysicist explains concept behind hit Netflix show
"3 Body Problem," Netflix's new big-budget adaptation of Liu Cixin's book series helmed by the creators behind "Game of Thrones," puts the science in science fiction.
General Physics
Mar 27, 2024
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101
Scientists on the hunt for evidence of quantum gravity's existence at the South Pole
Several thousand sensors distributed over a square kilometer near the South Pole are tasked with answering one of the large outstanding questions in physics: does quantum gravity exist? The sensors monitor neutrinos—particles ...
General Physics
Mar 26, 2024
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Using mode-locked lasers to realize and study non-Hermitian topological physics
Mode-locked lasers are advanced lasers that produce very short pulses of light, with durations ranging from femtoseconds to picoseconds. These lasers are widely used to study ultrafast and nonlinear optical phenomena, but ...