Articles tagged with Quantum Information Processing
Physicists have created a technique to improve the production of single photons, which can be used for quantum computing and secure communication. The new method uses fibre-optics and optical switches to control photon properties.
Scientists discovered that defect states can be used to detect occupation of trap sites, enabling new studies on developing novel technologies. They found that coherent microwave fields can dynamically mediate the occupation of defects states, consistent with two-level systems.
Purdue University researchers have successfully controlled the electron spin of a levitated nanodiamond using lasers in a vacuum, enabling potential applications in quantum information processing, sensors, and fundamental physics studies. The technique could also be used to detect and measure gases, such as oxygen, with improved accuracy.
Mun Dae Kim wins inaugural award for his work on superconducting flux qubits, increasing effective coupling strength for quantum computation; honors Dr. Howard E. Brandt, journal's late editor-in-chief.
Scientists have developed a novel method to control the Berry phase of a quantum state in a nitrogen-vacancy center in diamond, enabling robust quantum logic operations. The approach uses laser light to draw paths for the defect's spin, resulting in insensitive behavior to noise sources.
Researchers from the University of Warsaw have discovered a way to tailor the energy spectrum of an iron atom to obtain a doubly degenerate ground state with non-zero magnetic moment. This achievement enables the storage and processing of quantum information, making it suitable for applications in spintronics and solotronics.
An international team of researchers reviewed theoretical ideas on quantum teleportation, concluding a hybridisation of protocols is the most fruitful approach. This could lead to more efficient and reliable teleportation systems for quantum computing, communication, and network development.
Researchers developed a novel method to confine light, allowing for the retention of quantum memories encoded in photons. This breakthrough could lead to hybrid devices using quantum information for communication networks or quantum computing.
Oriol Romero-Isart receives Euro 4,000 award for seminal contributions to quantum physics topics including degenerate gases and nanooptics.
Researchers developed an efficient method to concentrate arbitrary N-particle less-entangled W states into maximally entangled states using parity-check gates. The approach requires a single photon as an auxiliary and can be repeated to increase success probability.
Researchers at JQI have discovered special wavelengths, known as 'magic wavelengths', that can trap and excite Rydberg atoms without disturbing them. This breakthrough enables the creation of qubits and interaction of atoms in a useful regime.
A panel of quantum experts will share their insights on the origins, achievements and long-term predictions of quantum research. The discussion aims to explore transformational opportunities of quantum information technologies.
Researchers at University of Strathclyde and Waterloo discovered a method to quantify steering's impact on distinguishing physical processes, enhancing quantum information processing. The study has implications for quantum cryptography and metrology.
A team of scientists at the University of Innsbruck has directly observed long-range tunneling of quantum particles through up to five potential barriers. The researchers used a gas of Cesium atoms in an engineered optical lattice, where they applied a directed force to initiate tunneling motion.
Scientists at the University of Copenhagen's Niels Bohr Institute have developed a method that harnesses decay to create entanglement between electrons in atomic systems. By controlling the interactions with their surroundings, researchers can precisely control the energy states of the electrons, leading to perfect entanglement.
Researchers from ETH Zürich and University of Calgary demonstrated the sharing of light between two artificial atoms in a one-dimensional system. This effect has significant implications for future applications in advanced quantum devices.
Researchers have discovered that copper phthalocyanine can remain in 'superposition' states, a key characteristic of quantum computing, for surprisingly long times. This could lead to significant advancements in quantum technologies, including data storage and manipulation.
A new study by Ludwig-Maximilians-Universität München researchers has uncovered a novel effect that can stabilize quantum systems against decoherence. In principle, this effect offers a means to protect the integrity of quantum information and brings practical quantum computing closer to reality.
Researchers at University of Chicago develop a spintronics approach to manipulate the spin of atomic-scale defects in diamond for new quantum technologies. This approach enables new nanoscale sensors, including single-spin thermometers, with potential applications in temperature measurement and information processing.
Canadian Institute for Quantum Computing research focuses on harnessing quantum laws to develop game-changing technologies. Experts hope to engineer benefits of quantum mechanics in sensor technology.
Researchers at Ames Laboratory overcome major hurdle in quantum information processing by decoupling individual qubits from their environment. This breakthrough enables robust quantum computation with solid-state devices, promising faster and more precise processing than classical computers.
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.
Physicists at NIST achieved a record-low probability of error in quantum information processing with a single qubit, meeting theoretical requirements for building viable quantum computers. The experiment used microwaves and a copper vacuum chamber to reduce errors, achieving an error rate of 1 per 50,000 logic operations.
Dr. Strauf's research focuses on scalability of semiconductor quantum photonic devices, which could enable novel applications in quantum communication, lithography, and national security. His award will support his work at Stevens and Brookhaven National Lab, as well as graduate student researchers.
Physicists at NIST demonstrate the first universal programmable quantum information processor using two qubits, capable of running any program allowed by quantum mechanics. The processor stores binary information in beryllium ions and can perform 160 different processing routines, making it 'universal'.
Researchers at UCSB are developing new techniques for manipulating single electron spins in diamond, aiming to build ultra-secure communication systems and lightning-fast database searches. The project will also focus on creating synthetic crystal diamond and heterostructure materials and devices.
Physicists at NIST have demonstrated a new ion trap that enables efficient transport of ions through an X-shaped junction, solving a key engineering issue for future ion-trap quantum computers. The demonstration achieved over 1 million successful transports with minimal heating, making it suitable for large-scale quantum computing.
Theoretical physicists discovered that measuring quantum particles causes interference, leading to a 'relaxed' state analogous to classical chaotic scattering. This finding has implications for quantum computing and information theory.
Researchers at Stanford University have created nanoscale drums that can resonate in the same way, despite having different shapes. This discovery has implications for spectroscopy and may lead to new designs for computer chip circuits.
Researchers have developed a system that uses a single trapped atom to generate high-quality single photons, which can be controlled and made indistinguishable for quantum computing. The 'single-photon server' has the potential to revolutionize quantum information processing by enabling deterministic atom-photon entanglement experiments.
Using artificial atoms on a chip, Yale physicists have successfully detected and stored individual microwave photons, bringing quantum mechanics to a larger scale. This breakthrough enables the creation of new types of quantum machines that can exponentially speed up computations in cryptography, quantum physics, and chemistry.
Researchers at USC and UTexas will build a detector for single photon computers, which could perform certain tasks far faster than traditional chips. The project aims to create ultra-small devices that generate single photons, one at a time, using 'quantum dots' and nanoscale technology.
Scientists at Max Planck Institute of Quantum Optics create single photons by trapping a calcium ion between two mirrors, allowing for controlled emission. The device enables user-controlled photon emission time and shape, paving the way for quantum information processing.
Researchers at the University of Bonn have successfully built a quantum register using neutral atoms, enabling the storage and manipulation of quantum information. The achievement marks a significant milestone in the development of quantum computing, which could potentially solve complex problems beyond current computer capabilities.
Researchers at the University of California - San Diego will lead three large ITR projects worth up to $12.5 million, focusing on grid computing and decision-making systems. Additionally, UCSD is involved in seven other newly-funded projects, including language modeling and materials science.
The paper proposes an experimentally realizable circuit and an efficient scheme to implement scalable quantum computing. Researchers aim to overcome two major stumbling blocks: preparing, manipulating, and measuring fragile quantum states and controlling connectivity between many qubits.
The National Science Foundation has established FOCUS, a Physics Frontier Center at the University of Michigan, to advance coherent control in quantum, ultrafast, and high-field physics. The center will focus on three major research components: High Field Control, Ultrafast Control, and Quantum Control.
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.