Articles tagged with Quantum States
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Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Scientists at Max-Planck Institute discover efficient way to brake molecular ion rotation, opening up new possibilities for laboratory-based astrochemistry. By cooling the rotational temperature using a tenuous gas, researchers can study chemical reactions in space more easily.
A UC Santa Barbara research team has demonstrated a nanomechanical transducer that provides strong and coherent coupling between microwave signals and optical photons. This breakthrough enables the translation of electrical quantum states to optical quantum states, paving the way for secure communication and quantum teleportation.
Researchers at ETH Zurich have developed a new control method for quantum systems, enabling precise steering through Hilbert spaces. This breakthrough has significant implications for the development of practical quantum computers.
Researchers successfully created interacting single-atom defects on a silicon surface, producing extended quantum states resembling artificial molecular orbitals. These findings represent an important step toward the fabrication of devices at the single-atom limit for applications such as quantum computing.
Physicists at the University of Vienna successfully transmitted quantum states between two islands in the Canary Islands, overcoming previous distances of just 97 km. The experiment uses active feed-forward protocol to enable reliable quantum teleportation over long distances.
Researchers at NIST have accelerated beryllium ions to 100 miles per hour and controlled their deceleration, demonstrating precision control of fast acceleration and sudden stops. This breakthrough enables faster transport of ions, a crucial step in quantum computing, reducing processing overhead and improving overall performance.
Researchers at Kansas State University have identified a new bound state in atoms that can hold three identical atoms together, but repel two. This discovery sheds light on matter and its composition, and may lead to breakthroughs in experiments with ultracold atomic gases.
Researchers at the University of Calgary have made a significant breakthrough in quantum copying, demonstrating that original states can be perfectly recovered from imperfect copies. This achievement has far-reaching implications for quantum technology, including potential applications in precision measurement and sample analysis.
Researchers at Georgia Institute of Technology have successfully squeezed a property called the nematic tensor, describing rubidium atoms in Bose-Einstein condensates. This achievement improves measurement precision for atomic clocks and magnetometers, with potential applications to quantum information systems.
Researchers at the University of Pittsburgh have discovered a surprising topological semimetal through simple system studies. This new quantum state shares properties with a quantum Hall state but is driven by interaction rather than an applied magnetic field.
Researchers have developed a theory for a quantum cloning machine that can produce four approximate copies of an initial quantum state, overcoming previous limitations to two or three copies. This advancement has significant implications for message encryption systems and analyzing security using shared secret quantum keys.
Researchers from the University of Vienna have proven that the entanglement or separability of a quantum state depends on the perspective used to assess its status. By using mathematical density matrices, they showed how different factorisations can lead to entanglement or separability in complex physical systems.
Researchers at UC Santa Barbara and in China and Japan created NOON states by generating and storing microwave photons in two physically-separated cavities. The team demonstrated the ability to manipulate these states, showing that probing one cavity affects the other.
Researchers developed a special sequence of high-precision electromagnetic pulses to protect the arbitrary quantum state of a single spin. This breakthrough enables the use of nitrogen-vacancy centers in diamond as highly sensitive nanoscale magnetic sensors and potentially, qubits for larger-scale quantum information processing.
A team of Syracuse University physicists developed a theoretical model that explains how the Pauli exclusion principle can be violated, allowing for multiple electrons to occupy the same quantum state. The model may help explain matter behavior at black hole edges and contribute to a unified theory of quantum gravity.
Researchers at UC Santa Barbara have demonstrated electrically manipulating quantum states of electrons in diamond crystals, a step towards developing quantum computers. The achievement enables the creation of magnetic fields large enough to change an atomic-scale defect's quantum state in under one billionth of a second.
Researchers at Purdue University have created a hybrid molecule that can be intentionally manipulated, opening the door to quantum computing in semiconductors. This discovery enables control over the quantum state, a required step for building quantum computers.
Researchers at Ames Laboratory and Microsoft Station Q studied nitrogen-vacancy centers in diamond to understand decoherence, a process destroying quantum coherence. They discovered that environmental interference can be regulated by applying a moderate magnetic field, gaining insight into the decoherence process.
The NIST quantum key distribution system has achieved a record speed of 4 million bits per second (bps) over 1 kilometer of optical fiber, twice the previous record. The system uses single photons and operates at an error rate of only 3.6 percent, enabling highly secure key exchange.
Researchers at California Institute of Technology successfully teleported a quantum state of light from one end of an optical bench to the other. The process, known as quantum teleportation, enables information transmission at the speed of light without physical medium.