Articles tagged with Quantum Computing
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Researchers have successfully controlled quantum states in a silicon wafer, achieving a record-breaking quantum on/off switching time of about 1 millionth of a millionth of a second. This breakthrough could lead to the creation of fast quantum silicon chips and ultra-sensitive bio-medical sensors.
A new analysis found that highly connected databases don't always support fastest quantum computing, with low connectivity yielding fast search in some cases. Researchers used the properties of superposition to model a quantum particle's movement through a database, demonstrating the unexpected influence of data structure on search speed.
Physicists use high-resolution spectroscopy to study and control matter, enabling precise control over atomic transitions and revealing hidden information about atom structure. The technique has applications in quantum computing, where it could offer significant boosts in computing power and improve computer security.
Researchers at City College of New York have discovered a new type of quantum particle that combines light and matter properties. This breakthrough could lead to the development of devices that utilize both light and matter, potentially revolutionizing computing and communication technologies.
Researchers at TUM develop a method to extract optically stored information from nitrogen-vacancy centers in nanodiamonds electronically. The technique uses a direct transfer of energy to a neighboring graphene layer, enabling picosecond electronic detection.
The UK has unveiled a £120 million national network of Quantum Technology Hubs, exploring the properties of quantum mechanics and harnessing them for technology. The hubs will deliver transformative impacts in key areas such as quantum metrology and sensors; quantum simulators; quantum computers and quantum secure communications.
Researchers have found evidence to confirm theoretical predictions for topological insulator conduction, leading to potential advancements in spintronics and quantum computing. The materials are insulators inside but conduct electricity via their surface.
Researchers at the University of Sydney have successfully applied control engineering principles from aerospace to protect fragile quantum systems from environmental noise. This breakthrough enables the development of useful technologies in fields such as computation, communication, and specialized sensors.
Researchers have discovered a new way to control electron spin in an insulating material, paving the way for more efficient spintronics devices. This breakthrough could lead to the development of spin-polarized materials and directly observe elusive Majorana fermions.
Quantum computing enables robots to learn and adapt faster, with a significant speedup in response times. This breakthrough has implications for machine learning, climate modeling, and internet search engines, leading towards a more ambitious objective of creating intelligent and creative robots.
Scientists have successfully observed the 'forbidden' infrared spectrum of a charged molecule for the first time. This achievement enables precise measurements of molecular properties with unprecedented accuracy. The research has significant implications for the development of molecular clocks, quantum technology, and fundamental physics.
Researchers from the University of Surrey and Ben-Gurion University in Israel have developed a new method to detect the elusive Majorana particle, potentially leading to the creation of topological Q-Bits. This breakthrough could significantly enhance the power of quantum computers, breaking the barriers on scaling up computation.
Researchers cooled singly charged aluminum monohydride molecules from room temperature to 4 degrees Kelvin in a fraction of a second, stopping their rotation. This breakthrough technique could lead to new applications in ultracold quantum-controlled chemistry and fundamental constants testing.
Scientists have successfully used a protection effect to enhance the stability of a promising quantum system, allowing for longer storage times. This breakthrough opens up new applications for hybrid quantum systems and could lead to ultrafast quantum computers.
Scientists propose a new quantum computer architecture based on microscopic defects in diamond, which could lead to the development of reliable quantum computers. The architecture has great potential for miniaturization and mass production, similar to how transistors were miniaturized in classical computer science.
Physicists at the Joint Quantum Institute have developed an MRI-like diagnostic technique for studying large ensembles of interacting quantum spins. The method reveals spin-spin interaction strengths and energies of various configurations, offering insights into complex phenomena like magnetism.
Researchers have discovered a way to control quantum dot triplets using electrical impulses, which could lead to faster quantum computers. The study shows that changing the coupling of three coherently coupled quantum dots can induce a phase transition between entangled and disentangled electron states.
Researchers at Dartmouth College have developed a breakthrough laser that uses an artificial atom to produce light, enabling the potential development of more powerful quantum computers. The new laser relies on superconducting electron pairs and has the ability to transmit information between quantum devices.
Researchers developed a filtering device for ultra-cold neutral atoms based on tunnelling, enabling efficient and robust transport. The technique can be applied to various high-precision applications like quantum metrology and quantum simulation.
A new paper reveals that contextuality is key to unlocking quantum computers' exponential computational power. Researchers use contextuality to design better algorithms and build more reliable quantum systems.
Researchers at Washington State University have confirmed a 60-year-old prediction of atomic behavior using a super-cold cloud of atoms. This discovery opens a new experimental path to potentially powerful quantum computing by inducing coherent 'superradiant' behavior predicted by Robert Dicke in 1954.
Researchers at NIST discovered that certain quantum dots exhibit 'fluorescence intermittency,' blinking on nanosecond to millisecond timescales. This could impact the stability of quantum dot-based systems for high-speed communication and computing.
Researchers will develop piezoelectric materials and nanometer-scale electromechanical devices to transfer information between quantum states and light using mechanical motion as an intermediary. The goal is to establish a technology that connects individual quantum states and enables the creation of quantum networks.
Physicist Yutaka Shikano has observed the Aharonov-Bohm effect with quantum tunneling in a linear Paul trap for the first time. The experiment demonstrates the measurable impact of a magnetic field on charged particles, verifying a fundamental component of modern physics.
Scientists at Purdue University have successfully created a new type of ultracold molecule using lasers, which could enable quantum computing, precise sensors, and advanced simulations. The lithium-rubidium molecule has a significant dipole moment, enabling stronger interactions necessary for entanglement-based quantum computing.
Researchers from the University of Basel have observed spontaneous magnetic order of electron and nuclear spins in a quantum wire at temperatures of 0.1 kelvin, exceeding previous limits of microkelvin range. This new state of matter is stabilized by nuclear spin coupling and mutual interactions between electrons.
Researchers at Mainz University have built a pilot prototype of a single-ion heat engine with the potential to operate at high efficiency. The nano-heat engine could exceed the Carnot limit, making it theoretically possible to improve efficiency beyond current standards.
Researchers from the QUEST Institute have demonstrated a new method called photon-recoil spectroscopy, which enables the investigation of fast transitions in atoms or molecules. The method involves trapping two ions and using laser light pulses to measure their frequencies with unprecedented accuracy.
Researchers at the University of Warsaw have created two new types of solotronic structures containing single cobalt and manganese ions, exhibiting powerful magnetic properties. These findings open up a broad field for developing electronic devices operating on a single-atom level.
Professor Geoff Pryde from Griffith University's Centre for Quantum Dynamics has been recognized for his pioneering contributions to quantum information science, including the first entangling optical quantum computer logic gate and fundamental experimental studies of quantum entanglement.
The JILA team has developed a method to spin electric and magnetic fields around trapped molecular ions, enabling the first measurement of an electron's electric dipole moment. This technique has major implications for future scientific understanding of the universe and may also be useful in quantum information experiments.
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.
A new study by UWM researchers identified two features affecting electron transport in graphene: intrinsic ripples and the Schottky barrier. These characteristics impact the ability to control an electric current, making it challenging to engineer nanoscale transistors with graphene.
Researchers from KIT have successfully stabilized a single atom's magnetic spin for ten minutes, opening up possibilities for compact computer memories and quantum computers. By suppressing surrounding interactions at low temperatures, they achieved a stability period of about a billion times longer than comparable atomic systems.
Researchers have developed a protocol to verify quantum computer results without using additional quantum computer resources. The test involves inserting 'traps' into tasks, which the user knows the result of in advance, allowing for reliable verification of the quantum computer's accuracy.
Researchers at UCL and University of Gdansk develop a new method to determine the amount of entanglement in one-dimensional quantum systems based solely on the area of the boundary between regions. This finding resolves a long-standing problem, showing that certain systems can be simulated easily using classical computers.
The proposed system combines ultracold trapped ions and fermionic atoms to emulate solid state physics, including the Peierls transition and phonon-mediated interactions. This hybrid system may simulate complex quantum systems beyond current computing power.
Scientists have successfully controlled a cloud of 40,000 rubidium atoms to maintain them in a non-equilibrium state analogous to the inverted pendulum. By applying bursts of microwave radiation, they stabilized the system's internal spins and prevented it from evolving towards stability.
Researchers found that topological insulators behave asymmetrically at the sub-atomic level, which could lead to significant improvements in energy efficiency for quantum computers. The discovery was made using first-principles calculations and observations taken at the Advanced Light Source.
Researchers investigated defect formation in Coulomb crystals during phase transitions, using ion traps to compress and fold the crystal structure. The experiments confirmed the Kibble-Zurek mechanism's predictions, demonstrating its importance in understanding complex physical phenomena.
Physicists at the University of Innsbruck have developed a new method to verify entanglement between several objects, using device-independent witnesses. This approach allows for high-confidence statements about entanglement with minimal assumptions.
Physicists at Innsbruck University develop new method to measure single photons, achieving a detection probability of 12%. The technique uses quantum logic spectroscopy and entangled ions to gain practical knowledge about single particles.
A new method for designing quantum memory has been developed, enabling long-term storage of quantum states with low error rates. This breakthrough could revolutionize information processing and solve complex problems in fields like materials science and physics.
In large quantum systems, entanglement becomes ubiquitous above a threshold of about 200 particles, enabling super high-speed communications and quantum computing. The study provides parameters to harness this property.
Researchers from UW-Milwaukee and University of York investigate ultra-thin films of new materials, aiming to create a materials platform for quantum computers. The team found that the unique properties of topological insulators can be modified by intrinsic defects, opening up new possibilities for spintronics.
Researchers at the University of Illinois Chicago have developed a method to introduce exactly four copper ions into each quantum dot, enabling fine-tuning of optical properties and production of vibrant colors. The study opens up possibilities for producing spectacular dyes with consistent results.
An interdisciplinary team has successfully depleted electrons from the bulk of topological insulators, demonstrating superconducting surface states. This breakthrough enables experimentation with TIs and paves the way for investigating the Majorana quasiparticle, a fermion that could serve as a quantum bit in quantum computing.
Researchers at NIST and the University of Maryland have developed an optical memory device using a cloud of rubidium atoms, enabling the storage of simple images. The breakthrough demonstrates spatially addressable readout and erasure of an image in the vapor, paving the way for quantum computing applications.
Researchers have pioneered a method to chill molecules using an ultracold cloud of calcium atoms and molecular ions, enabling the creation of hundreds of different molecules. This breakthrough brings scientists closer to building a computer that doesn't work with zeros and ones but with quantum mechanical objects.
A team of physicists at UCSB has made a discovery that provides new understanding in the quantum realm. By manipulating light on superconducting chips, they have developed an unprecedented level of control over photons, enabling the shaping of released photons into different wave forms.
Researchers at the University of Innsbruck successfully reversed a quantum measurement using quantum error correction protocol, which contradicts foundational principles. This experiment demonstrates that information can be reconstructed from entangled states after individual particle measurements.
Engineers at the University of Utah have shown that it is feasible to create organic topological insulators, which can conduct electricity on their edges but act as an insulator inside. This discovery could enable faster-than-light information transfer in quantum computers and spintronics devices.
A research team at the University of Innsbruck has successfully transferred quantum information from an atom to a single photon, paving the way for the construction of a quantum internet. This breakthrough enables the transfer of quantum information over optical channels between quantum computers.
Physicists at the University of Texas at Austin have designed a simulation that emulates key properties of electronic topological insulators. The simulation, called SPINDOMs, allows researchers to control the spin of photons in a way that emulates what can be done with electrons.
Physicists have demonstrated a new type of quantum entanglement using three particles, building on Einstein's original ideas. This experiment may lead to the creation of hybrid quantum systems with multiple unique properties.
Scientists from Bangalore and Mainz have developed a new method for cooling ions using collisions with cold atoms. This process enables the storage of ions in ion traps at stable conditions for longer periods, which could lead to the formation of molecular ions in space.
A French team identified key parameters to generate high-fidelity single photons, crucial for quantum computing and communication. They simulated detector properties and experimental results to improve reliability.
Researchers at the University of Toronto have successfully induced high-temperature superconductivity in a semiconductor by placing it in proximity to a topological insulator using Scotch poster tape. This breakthrough could lead to advancements in quantum computing and improvements in energy efficiency.
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.
The device can be used to study stars, galaxies, and black holes, as well as explore the quantum world. It combines features of other amplifiers, operating over a wide frequency range with minimal noise.