Quantum annealing (QA) is a cutting-edge algorithm that leverages the unique properties of quantum computing to tackle complex combinatorial optimization problems (a class of mathematical problems dealing with discrete-variable functions).
On behalf of the American Chemical Society (ACS), President Judith C. Giordan, Ph.D., congratulates today’s winners of the Nobel Prize in Chemistry: Moungi G. Bawendi, Ph.D., of the Massachusetts Institute of Technology; Louis E. Brus, Ph.D., of Columbia University; and Alexei I. Ekimov, Ph.D., of Nanocrystals Technology Inc.
Theorists have successfully calculated the “heavy quark diffusion coefficient,” which describes how quickly a melted soup of quarks and gluons transfers its momentum to heavy quarks. The results show this transfer is very fast—at the limit of what quantum mechanics will allow.
Some types of quantum chromodynamics (QCD) calculations are so complex they strain even supercomputers. To speed these calculations, researchers developed MemHC, an optimized memory framework.
The physics behind antimatter is one of the world’s greatest mysteries. Looking as far back as The Big Bang, physics has predicted that when we create matter, we also create antimatter.
The Perimeter Institute and quantum software startup Haiqu have established a new partnership to more closely connect fundamental research and technological innovation.
A Case Western Reserve University-led team is working on technology that could dramatically improve electrical transformers and power converters in electric vehicles.
In the future, quantum computers may be able to solve problems that are far too complex for today’s most powerful supercomputers. To realize this promise, quantum versions of error correction codes must be able to account for computational errors faster than they occur.
Many objects in the Universe have magnetic fields. Planets such as Earth and Jupiter, the Sun and other stars, even galaxies billions of light years away.
Quantum computers process information using quantum bits, or qubits, based on fragile, short-lived quantum mechanical states. To make qubits robust for applications, researchers from Oak Ridge National Laboratory sought to create a new material system.
Electrons can display interference effects like waves in the ocean, but this happens on extremely fast time scales. In this study, scientists observed the quantum mechanical motion of electrons in an excited molecule using an “attoclock,” which measures electron motion with a precision of hundreds of attoseconds. The experiment advances the study of electron dynamics and will improve understanding of molecular physics and quantum chemistry.
This morning, the Breakthrough Foundation announced the winners of the 2024 Breakthrough Prizes and Stony Brook University Distinguished Professor and C.N. Yang/Wei Deng Endowed Chair Alexander Zamolodchikov was named co-recipient of the Prize in Fundamental Physics.
Researchers have discovered that applying plastic deformation to the quantum material strontium titanate causes defects (known as dislocations) to organize themselves into repeating structures. These changes lead to improvements of strontium titanate’s superconducting and ferroelectric properties.
Quantum materials’ properties arise from the interaction of their electrons and atomic nuclei. Researchers can observe these interactions as they happen using ultrafast X-ray or electron beam pulses.
Researchers from the RIKEN Center for Quantum Computing have used machine learning to perform error correction for quantum computers—a crucial step for making these devices practical—using an autonomous correction system that despite being approximate, can efficiently determine how best to make the necessary corrections.
Though a cornerstone of thermodynamics, entropy remains one of the most vexing concepts to teach budding physicists in the classroom. In The Physics Teacher, co-published by AIP Publishing and the American Association of Physics Teachers, T. Ryan Rogers designed a hand-held model to demonstrate the concept of entropy for students.
While studying random algorithms to learn their generic features and to develop new strategies to correct quantum processor errors, Cornell researchers discovered that certain classes of algorithms lead to hidden order called “spin-glass” for its analogy to window glass, which at the micro level has the disorder of liquid and the rigidity of a solid.
Comparing experimental results and theoretical calculations can be difficult for quantum materials. One solution is to use sample materials that isolate and emphasize an atomic line with one dimensional properties. In this study, scientists grew thin films of layered copper-oxygen materials to experimentally test theories of electron interaction in quantum materials. The study indicates that standard theory is not sufficient and requires a new term to fit the experimental data.
Scientists at the University of Sydney have, for the first time, used a quantum computer to engineer and directly observe a process critical in chemical reactions by slowing it down by a factor of 100 billion times.
Harnessing the potential of quantum physics for advances in computing, communication and other technologies promises to be the next great engineering challenge.
A team from Aalto University and the University of Jyväskylä have created an artificial quantum magnet featuring a quasiparticle made of entangled electrons, the triplon.
A team of Berkeley Lab researchers has recently demonstrated a more effective technique for creating quantum emitters using pulsed ion beams, which could lead to their use in a quantum internet and for sensing radiation.
For nearly 40 years, materials called ‘strange metals’ have flummoxed quantum physicists, defying explanation by operating outside the normal rules of electricity.
The Advanced Quantum Testbed (AQT) at Berkeley Lab celebrated the first five years of operations and its renewal with a two-day hybrid summit in May 2023, bringing together staff, alums, testbed users, and colleagues.
The qubits that make up quantum computers have a lesser-known cousin called qudits. Qudits can carry more information and are more resistant to the noise that can cause qubits to lose information. However, qudits have historically been difficult for scientists to measure and modify.
Oak Ridge National Laboratory's Timothy Gray led a study that may have revealed an unexpected change in the shape of an atomic nucleus. The finding could affect our understanding of what holds nuclei together, how protons and neutrons interact and how elements form.
A potentially game-changing theoretical approach to quantum computing hardware avoids much of the problematic complexity found in current quantum computers. The strategy implements an algorithm in natural quantum interactions to process a variety of real-world problems faster than classical computers or conventional gate-based quantum computers can.
Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers from Empa and ETH Zurich, in collaboration with partners from Peking University, the University of Warwick and the Max Planck Institute for Polymer Research, have succeeded in attaching electrodes to individual atomically precise nanoribbons, paving the way for precise characterization of the fascinating ribbons and their possible use in quantum technology.
Over the past decade, scientists have made tremendous progress in generating quantum phenomena in mechanical systems. What seemed impossible only fifteen years ago has now become a reality, as researchers successfully create quantum states in macroscopic mechanical objects.
One of the most striking predictions of quantum physics is that matter can be generated solely from light (i.e., photons), and in fact, the astronomical bodies known as pulsars achieve this feat.
Registration is now open for the third Quantum Information Science Career Fair hosted by the U.S. Department of Energy (DOE) Office of Science’s National Quantum Information Science (QIS) Research Centers. The virtual event takes place on Wednesday, Sept. 13. The event aims to make undergraduates, graduate students, postdocs and early-career professionals aware of the wide range of QIS careers they can pursue—including technical and scientific roles as well as positions that facilitate research and bring awareness to the field, such as communications and program management.
AIP Publishing is thrilled to announce the appointment of Ortwin Hess as the founding editor-in-chief of APL Quantum, its newest open-access journal, which seeks to cultivate groundbreaking research in both fundamental and applied quantum science. Hess brings a lifetime of scientific experience and insight in nearly all aspects of quantum science and as editor-in-chief, he will lead the journal as it begins accepting submissions later in 2023 and prepares to publish in 2024.
In 1956, theoretical physicist David Pines predicted that electrons in a solid could form a composite particle called a demon. It's eluded detection since its prediction....until now.
Structuring light emission, particularly from non-classical sources, is crucial for realizing practical high-dimensional quantum information processing. However, traditional methods rely on bulky optical elements with limited functionalities. Scientists have developed an elegant solution for controlling and manipulating dim light sources – down to the single photon level. The nanopatterned structure, a multifunctional metalens, could unleash the full potential of solid-state quantum light sources for advanced quantum photonic applications.
New research from Q-MEEN-C shows that electrical stimuli passed between neighboring electrodes can also affect non-neighboring electrodes. Known as non-locality, this discovery is a crucial milestone toward creating brain-like computers with minimal energy requirements.