Quantum sensors detect the smallest of environmental changes—for example, an atom reacting to a magnetic field. As these sensors “read” the unique behaviors of subatomic particles, they also dramatically improve scientists’ ability to measure and detect changes in our wider environment.
The advance offers a way to characterize a fundamental resource needed for quantum computing.
Entanglement is a form of correlation between quantum objects, such as particles at the atomic scale. This uniquely quantum phenomenon cannot be explained by the laws of classical physics, yet it is one of the properties that explains the macroscopic behavior of quantum systems.
Because entanglement is central to the way quantum systems work, understanding it better could give scientists a deeper sense of how information is stored and processed efficiently in such systems.
Researchers record the longest Rydberg-atom lifetime by placing strontium atoms in “circular” states, where the outer electrons move in planet-like orbits.
TURKU, Finland — Beam me up, Scotty! In a study that seems straight out of a “Star Trek” episode, an international team of researchers has achieved a remarkable feat in the realm of quantum teleportation. They have successfully conducted near-perfect quantum teleportation despite the presence of noise that typically disrupts the transfer of quantum states.
Quantum teleportation is a process in which the state of a quantum particle, or qubit, is transferred from one location to another without physically sending the particle itself. This transfer requires quantum resources, such as entanglement between an additional pair of qubits.
Imagine you have a secret message written on a piece of paper. You want to send this message to someone far away without anyone else seeing it. In quantum teleportation, instead of physically sending the paper, you would make an exact copy of the message at the other location while the original message gets destroyed. This requires some special resources like entanglement, which is like a mysterious connection between two qubits.
At a fundamental level, only a few particles and forces govern all of reality. How do their combinations create human consciousness?
In a groundbreaking discovery published in the prestigious Astrophysical Journal, scientists have identified a rare dust particle lodged within an ancient extraterrestrial meteorite, shedding new light on the origins of stars beyond our solar system.
Advanced Research Techniques
Led by Dr. Nicole Nevill of the Universities Space Research Association at LPI, during her Ph.D. studies at Curtin University, the research team meticulously analyzed the dust particle, delving into its atomic composition with unparalleled precision using atom probe tomography.
Researchers at Tohoku University and the Japan Atomic Energy Agency have developed fundamental experiments and theories to manipulate the geometry of the ‘electron universe,’ which describes the structure of electronic quantum states in a manner mathematically similar to the actual universe, within a magnetic material under ambient conditions.
The investigated geometric property – i.e., the quantum metric – was detected as an electric signal distinct from ordinary electrical conduction. This breakthrough reveals the fundamental quantum science of electrons and paves the way for designing innovative spintronic devices utilizing the unconventional conduction emerging from the quantum metric.
The big bang is the model that describes the birth and evolution of the universe. But where did the term come from? What does it actually mean?
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Partly because of semiconductors, electronic devices and systems become more advanced and sophisticated every day. That’s why for decades researchers have studied ways to improve semiconductor compounds to influence how they carry electrical current. One approach is to use isotopes to change the physical, chemical and technological properties of materials.
Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons and thus different masses. Isotope engineering has traditionally focused on enhancing so-called bulk materials that have uniform properties in three dimensions, or 3D.
But new research led by ORNL has advanced the frontier of isotope engineering where current is confined in two dimensions, or 2D, inside flat crystals and where a layer is only a few atoms thick. The 2D materials are promising because their ultrathin nature could allow for precise control over their electronic properties.
The experiment confirmed their suspicions. By supercooling the dysprosium atoms, splitting them into spin-based layers with the lasers, and stabilizing the lasers with the optical fiber, they successfully achieved a 50-nanometer separation – the closest arrangement ever achieved in ultracold atom experiments.
This dramatic proximity significantly amplified the natural magnetic interactions between the atoms, making them a thousand times stronger than at 500 nanometers. The team observed two fascinating quantum phenomena: collective oscillation, where vibrations in one layer triggered synchronized vibrations in the other, and thermalization, where heat transfer occurred between the layers solely through fluctuating magnetic fields within the atoms.
