Articles tagged with Quantum Computing
Researchers at Oak Ridge National Laboratory used neutron scattering to uncover magnetic excitations in a rare-earth based intermetallic compound. The study reveals exotic magnetic properties, challenging conventional expectations of magnetic behavior in materials.
Researchers from Singapore and UK test a compact device in space that creates and measures pairs of light particles, a precursor to entangled photons. The technology aims to connect powerful quantum computers globally, enabling secure keys for secret messaging.
Researchers demonstrate how state-of-the-art quantum simulations with trapped ions can be used to solve complex problems like number-partitioning. By applying a strategy known as quantum annealing, they show a faster solution than other methods.
The University of Waterloo's IQC developed software to assess QKD protocol security, achieving perfect agreement with previous results and enabling exploration of new protocols. The tool enables users to analyze any protocol in seconds, a significant improvement over months-long efforts.
Researchers at UNSW Australia have demonstrated that individual atoms placed precisely in silicon can act as a quantum simulator, mimicking the weird interactions of electrons in materials. The study allows for the simulation of complex quantum systems and has the potential to design new exotic materials and test fundamental aspects of...
Researchers develop a new approach to coupling Rydberg atoms to surfaces, reducing electric fields and enabling hybrid quantum systems. The findings show promise for the second quantum revolution in engineering quantum matter with arbitrary precision.
A research team at the University of Sydney has developed a major breakthrough in generating single photons, enabling the creation of secure cyber security systems. This innovation resolves a key issue holding back password exchange and can be scaled up to generate single photons with 100% probability.
Researchers at PTB have demonstrated non-destructive state detection technique for molecular ions, enabling novel spectroscopy methods with applications in chemistry and fundamental physics. The technique enables direct observation of quantum jumps in isolated molecules.
Researchers have developed a new quantum approach to analyze connections in complex networks, such as brain wiring and the global internet, using topological systems. This method can exponentially speed up calculations compared to conventional computers.
A working quantum computer system is expected to be developed by 2020, as predicted by Professor O'Brien of the University of Bristol. This will lead to breakthroughs in artificial intelligence, pharmaceutical discovery, and cyber security, disrupting traditional businesses and challenging current computing technologies.
A team at Australia's University of New South Wales has proven that a quantum version of computer code can be written and manipulated using two quantum bits in a silicon microchip. The advance removes lingering doubts about the reliability of such operations, enabling powerful quantum computers to become a reality.
Physicists from France and Russia have discovered magnetic disturbances resembling little oscillating stars in a 2D superconductor layer. These 'nanostars' are caused by a single magnetic atom and are more sustainable than previous observations, bringing us closer to developing quantum computers.
Researchers have developed an upgrade to the Internet's core encryption protocol, making it resistant to future-proofing by powerful quantum computers. The new protocol uses a mathematical technique called 'ring learning with errors problem' to protect information.
Researchers have successfully implemented superposition of quantum gates, allowing for increased efficiency in quantum computations. This breakthrough could pave the way for faster quantum computers.
Scientists have identified a way to manipulate nuclei using electrons' magnetic moments, enabling the transfer of quantum information between particles. The discovery could lead to more stable systems for quantum computing.
Physicists have successfully frozen single charged atoms to within a millionth of absolute zero using microwave radiation, paving the way for simplified construction of quantum technology devices. This technique will enable the creation of powerful quantum sensors, ultra-fast quantum computers, and ultra-stable quantum clocks.
Scientists have created a hybrid state of being both 'alive' and 'dead' by combining Schrödinger's cat with squeezed quantum states, enabling more stable quantum computing and precise measurement capabilities.
Researchers have developed a new method for secure data transmission utilizing offline repositories and quantum information to overcome quantum computing threats. The approach provides robust authentication and authorship uniqueness, paving the way for potential applications in untraceable transactions.
The European PQCRYPTO consortium is developing technology to resist quantum computer attacks, targeting small devices and cloud storage for the next three years. Post-quantum cryptography could protect sensitive data like health records or top-secret documents with confidentiality requirements over 10 years.
A Spanish-led team has created an electronic device to detect individual electrons' charge, enabling future quantum computers to read information stored in single electron spin. The device, called a 'gate sensor', can detect electrical charge in less than one nanosecond.
Researchers from the University of Bonn and Cambridge successfully linked two different quantum systems, quantum dots and ions, to work together as a team. This hybrid system combines the strengths of both components, enabling faster calculations and improved memory storage.
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.