Tag

Quantum Simulation

All articles tagged with #quantum simulation

science28 days ago•5 min saved

Hidden Magnetic Order Emerges at the Pseudogap Edge

Physicists used ultracold lithium atoms to simulate the Fermi-Hubbard model in an optical lattice and observed that magnetic correlations persist in a disordered-like regime near the pseudogap, following a single universal pattern tied to a temperature scale similar to the pseudogap temperature. They also detected extended magnetic polarons across many lattice sites, quantified a new 'polaron strength,' and measured high-order spin–charge correlations up to fifth order, indicating the pseudogap hosts complex, multi-particle quantum order that could connect magnetism to high-temperature superconductivity—though some model predictions diverged at higher doping.

via Indian Defence Review|

#magnetism #many-body-physics #pseudogap

science1 month ago•4 min saved

Hidden Magnetic Order in Pseudogap Narrows Path to Room-Temp Superconductivity

Physicists used ultracold lithium atoms in an optical lattice to simulate the Fermi-Hubbard model and uncovered a hidden magnetic order beneath the pseudogap, revealing universal spin correlations and multi-particle interactions up to five bodies. By imaging thousands of individual atoms with a quantum gas microscope and varying temperature and doping, they gain new clues about how pseudogap physics connects to superconductivity and how analog quantum simulations can guide theory and materials design for higher-temperature superconductors.

via The Debrief|

#fermi-hubbard-model #pseudogap #quantum-simulation

science1 month ago•24 min saved

Ultracold-Atom Study Uncovers Hidden Magnetism in Pseudogap Phase

Physicists using an ultracold lithium-atom quantum simulator have revealed hidden magnetic order in the pseudogap phase of certain quantum materials, showing universal antiferromagnetic correlations above the superconducting transition and offering fresh insight into how high-temperature superconductivity may emerge, with results published in Proceedings of the National Academy of Sciences.

via Ground News|

#magnetism #pseudogap #quantum-simulation

science5 months ago•9 min saved

Analog and Digital Technologies Compete to Simulate Quantum Reality

Recent advances in both analog and digital quantum simulations are paving the way for quantum computers to model complex physical phenomena beyond classical capabilities, with efforts focusing on simulating quantum fields, particles, and forces like electromagnetism and the strong force, using innovative approaches such as qubits, qudits, and analog systems, aiming to unlock mysteries of the universe and develop new materials.

via Quanta Magazine|

#analog #digital #physics

science6 months ago•3 min saved

Rydberg Atom Lattices Reveal Quantum Spin Liquid Topology

Researchers at EPFL developed a new numerical approach using Rydberg atom lattices to simulate and predict the properties of quantum spin liquids, including topological entanglement entropy, enabling better understanding of these complex quantum states without relying on approximations.

via Phys.org|

#numerical-methods #quantum-simulation #quantum-spin-liquids

science7 months ago•5 min saved

Quantum Computer Demonstrates Zero-Temperature Symmetry Breaking

An international team successfully used a superconducting quantum processor to simulate spontaneous symmetry breaking at zero temperature, demonstrating quantum computing's potential to explore complex physical phenomena with over 80% fidelity, and providing new insights into phase transitions and quantum entanglement.

via Phys.org|

#quantum-computing #quantum-simulation #science

science8 months ago•4 min saved

Innovative Method to Test Landauer's Principle in Quantum Many-Body Systems

Researchers have experimentally extended Landauer's principle to quantum many-body systems using ultracold atoms and quantum field simulations, providing new insights into the relationship between information erasure and heat dissipation in quantum regimes.

via Phys.org|

#landauers-principle #quantum-many-body-systems #quantum-simulation

science2 years ago•4 min saved

"Resolving the Pseudogap Debate: Quantum Simulator Unveils New Insights in Fermi Gases"

Chinese scientists from the University of Science and Technology of China have used a quantum simulator to visualize and quantify a phenomenon called a "pairing pseudogap" within a model gas, resolving a two-decade-old debate in physics. This breakthrough could lead to a better understanding of high-temperature superconductors and pave the way for practical applications of superconductivity. The team's findings, published in the journal Nature, could be a significant step towards using quantum simulations to solve important physical problems and uncover the key to practical superconductivity.

via South China Morning Post|

#chinese-scientists #high-temperature-superconductors #quantum-physics

science-and-technology2 years ago•5 min saved

Advancements in Quantum Computing: Entangling Individual Molecules

Physicists at Princeton University have successfully entangled individual molecules for the first time, a breakthrough that has significant implications for quantum information processing. Quantum entanglement allows molecules to remain correlated and interact simultaneously, even when separated by large distances. This achievement opens up possibilities for applications such as quantum computers, quantum simulators, and quantum sensors. The researchers used a carefully controlled experiment involving laser cooling and optical tweezers to manipulate and entangle the molecules. This research demonstrates the potential of molecules as a viable platform for quantum science.

via EurekAlert|

#molecules #quantum-computers #quantum-entanglement

quantum-physics2 years ago•6 min saved

Unveiling Quantum Simulation's Entanglement Exploration and Uncharted Phenomena

Researchers are exploring large-scale entanglement in quantum simulation, studying the properties of entanglement Hamiltonians and their applications in lattice models and experiments. They investigate the dynamics and behavior of entanglement in various quantum systems, including long-range quantum magnets, trapped ions, Rydberg arrays, and programmable quantum simulators. The study of entanglement Hamiltonians provides insights into the entanglement structure and correlations in many-body systems, paving the way for advancements in quantum information processing and quantum technologies.

via Nature.com|

#entanglement-hamiltonians #large-scale-entanglement #quantum-information

science-and-technology2 years ago•3 min saved

"Unlocking the Mysteries of Quantum Phenomena with a Revolutionary Tool"

Researchers at the University of Innsbruck and the Institute of Quantum Optics and Quantum Information have developed a new approach to study and understand entanglement in quantum materials. By using a quantum simulator with 51 particles, they were able to recreate a real material and observe effects that were previously only described theoretically. The researchers developed a more efficient method to extract entanglement information from large quantum systems with fewer measurements. They used temperature profiles to determine the degree of entanglement, with "hot" particles indicating strong interaction with the environment and "cold" particles indicating weak interaction. This breakthrough opens the door to studying a new class of physical phenomena and testing new theories using quantum simulators.

via Phys.org|

#entanglement #particle-interactions #quantum-materials

science-and-technology2 years ago•3 min saved

"Unleashing Quantum Power: Physicists Harness Imperfect Crystals' Hidden Potential"

Physicists at Washington University in St. Louis have made significant progress in turning diamonds into quantum simulators by bombarding them with nitrogen atoms to create flaws in the crystal structure. These imperfections can be filled with electrons that possess quantum properties, allowing for the measurement and manipulation of quantum systems. The researchers demonstrated the feasibility of directly simulating complex quantum dynamics using a controllable quantum system, which is difficult to achieve with classical computers. The diamond-based system operated at room temperature and maintained stability by preventing thermalization. This breakthrough opens up possibilities for studying quantum physics, developing sensitive quantum sensors, and exploring interdisciplinary collaborations.

via SciTechDaily|

#diamonds #imperfect-crystals #quantum-physics

science-and-technology2 years ago•4 min saved

"Physicists Achieve Breakthrough in Simulating Super Diffusion with Quantum Leap"

Physicists at Trinity College Dublin, in collaboration with IBM, have successfully simulated super diffusion in a system of interacting quantum particles on a 27-qubit quantum computer. This breakthrough opens up possibilities for deeper insights into condensed matter physics and materials science. The research, published in the journal NPJ Quantum Information, demonstrates the potential of quantum computing in both commercial and fundamental physics inquiries. The team's work focused on simulating the long-time behavior of spin excitations in a Heisenberg chain, revealing the occurrence of super-diffusion governed by the Kardar-Parisi-Zhang equation.

via SciTechDaily|

#condensed-matter-physics #materials-science #quantum-computing

science-and-technology2 years ago•5 min saved

Advancements in Quantum Computing and Photon Manipulation Revolutionize Optical Communication

Researchers at Duke University have used a quantum simulator, developed from research in quantum computing, to observe a quantum effect called a conical intersection in the way light-absorbing molecules interact with incoming photons. This observation method addresses a fundamental question in chemistry and provides insights into processes such as photosynthesis and vision. The results demonstrate how advances in quantum computing are being used to investigate fundamental science.

via Phys.org|

#conical-intersection #geometric-phase #light-sensitive-molecules

science-and-technology2 years ago•3 min saved

"Revolutionary Chessboard Method Unleashes Quantum Dot System's Potential"

Researchers from Delft have developed a chessboard-like method to address multiple quantum dots using a combination of horizontal and vertical lines, enabling the operation of the largest gate-defined quantum dot system to date. This approach is a significant step towards scalable quantum systems for practical quantum technology. The method reduces the number of control lines required for addressing qubits, making it more feasible to scale up the number of qubits in quantum computers. Additionally, the researchers have achieved high-quality qubits with a 99.992% fidelity, opening up possibilities for quantum simulation using quantum dot systems.

via Phys.org|

#chessboard-like-method #quantum-computing #quantum-dots