International award for Oriol Romero-Isart
Oriol Romero-Isart receives Euro 4,000 award for seminal contributions to quantum physics topics including degenerate gases and nanooptics.
Quantum Information Processing
Articles tagged with Quantum Information Processing
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An efficient approach to concentrate arbitrary N-particle W state
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.
Magic wavelengths
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.
Quantum research past, present and future for discussion at AAAS
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.
Correlations of quantum particles help in distinguishing physical processes
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.
Long-range tunneling of quantum particles
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.
Decay used to construct quantum information
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.
Distant artificial atoms cooperate by sharing light, international research team shows
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.
New material for quantum computing discovered out of the blue
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.
Quantum particles find safety in numbers
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.
Spintronics approach enables new quantum technologies
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.
Quantum devices: Building an innovative future for Canada
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.
Opening the gate to robust quantum computing
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.
Not 1, not 2, not 3, but 4 clones!
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.
NIST achieves record-low error rate for quantum information processing with one qubit
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. Stefan Strauf of physics at Stevens receives NSF CAREER Award for quantum research
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.
NIST demonstrates 'universal' programmable quantum processor
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'.
UCSB receives $6.1 million for diamond-based quantum information processing and communication
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.
X marks the spot: Ions coldly go through NIST trap junction
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.
What happens when you pop a quantum balloon?
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.
Stanford researchers hear the sound of quantum drums
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.
A single-photon server with just one atom
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.
Artificial atoms make microwave photons countable
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.
The Einstein emitter: NSF funds single photon computer system at USC and UTexas
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.
Photons under control
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.
Next step to the quantum computer
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.
UC San Diego researchers receive $14 million from NSF for 10 new information technology projects
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.
Paper discusses circuitry for quantum computing
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.
Opitcal coherent and ultrafast science
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.
Here A Beam, There A Beam
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.