A new method for characterizing complex quantum states has been developed, enabling quantum simulations on larger systems. This method is based on the repeated measurement of randomly selected transformations of individual particles and provides information about the degree of entanglement.
A team of Sydney researchers has achieved a world-record result in reducing errors in semiconductor electron 'spin qubits', a crucial step towards building useful quantum computers. The result, published in Nature Electronics, demonstrates error rates as low as 0.043 percent.
Researchers at University of Innsbruck discover that digital quantum simulation can retain controlled Trotter errors for local observables, reducing the number of required gate operations. This breakthrough makes digital quantum simulation more accessible to current day quantum devices.
Scientists from Michigan Technological University have successfully created 2D gold quantum dots that can be customized at the atomic level on boron nitride nanotubes. This breakthrough enables the creation of tunable semiconducting materials with potential applications in future electronics and quantum computing.
D-Wave's quantum annealing algorithm and quantum computer have been shown to break RSA codes with unprecedented efficiency, outperforming universal quantum computers like Shor's algorithm. This breakthrough highlights the potential of D-Wave for cryptanalysis and code-cracking.
Physicists have created a quantum simulator that mimics the behavior of magnets at very low temperatures using photons instead of magnetic dipoles. This breakthrough enables researchers to study complex quantum phenomena without requiring expensive experimental setups.
A new computer program can identify unwanted states in quantum computers, allowing users to check reliability without technical expertise. Researchers used the IBM Q Experience and dimension witnessing technique to demonstrate the method's accuracy.
Scientists have developed a method to swap electron spins between distant quantum dots, enabling fast interaction and space for pulsed gate electrodes. This breakthrough brings us closer to future applications of quantum information and potential quantum computers.
A study published in Physical Review Letters demonstrates that algorithms based on deep neural networks can better understand quantum physics phenomena. Researchers found a way to harness AI to enhance understanding of quantum behavior, potentially revolutionizing various aspects of life.
Researchers at Delft University of Technology have created a quantum circuit that enables the detection of weak radio signals, which could revolutionize fields like radio astronomy and medicine. The breakthrough opens up possibilities for experiments that explore the interplay between quantum mechanics and gravity.
Researchers at Joint Quantum Institute demonstrate a new way to distinguish between quantum scrambling and true information loss using a small quantum computer. They achieved an accuracy of 80% in correctly diagnosing scrambling with seven atomic ions.
A new measurement technique called COSPLI enables researchers to map and measure large-scale photonic quantum correlation with single-photon sensitivity, a critical step towards making photon-based quantum computing practical. The method uses CCD cameras and suppresses noise to detect signals from individual photons.
Researchers at the University of Sydney have demonstrated an order of magnitude improvement in reducing infidelity, or error rates, in quantum logic gates by using codes to detect and discard errors. This achievement opens a path to further improvements in quantum computers.
The discovery represents a powerful mechanism for quantum computing and cryptography. Researchers developed an exponential-SWAP gate that can link encoded particles on demand, mitigating the limitation of previous designs and enabling flexible operations.
A team of Cambridge researchers controlled the sea of nuclei in semiconductor quantum dots, enabling them to operate as a quantum memory device. This achievement harnesses the interaction between electrons and nuclear spins, proving the nuclei can exchange information with an electron qubit.
Quantum computing aims to break cryptography and speed up database search, but scaling is a significant challenge. Researcher Debbie Leung discusses the ingredients required for accurate quantum computing operations and recent progress with error-correcting codes.
Researchers have developed a new technique to recover lost information in quantum systems by repeating experiments with slightly different noise characteristics. This method effectively reduces quantum noise without the need for additional hardware.
A group of researchers proved that whether an object exhibits quantum features depends on the reference frame. The physical laws, however, are still independent of it. This insight might play a role at the interplay of quantum mechanics and gravity.
Researchers have demonstrated proof-of-principle for an all-photonic quantum repeater, a critical step in long-distance quantum communication. This technology could enable faster and more secure global quantum Internet applications.
A team of scientists successfully simulated an arbitrary quantum channel for a superconducting qubit, allowing for controlled evolution in various physical environments. This breakthrough demonstrates the potential for this technology in future applications, including quantum computation and simulation.
Researchers from Osaka City University have developed a novel quantum algorithm to perform full configuration interaction calculations suitable for predicting chemical reactions, overcoming the exponential/combinatorial explosion of traditional methods. This breakthrough enables practical applications of quantum chemistry on quantum co...
Researchers from Osaka City University have developed a quantum algorithm capable of performing full configuration interaction calculations for any open shell molecules in polynomial time, overcoming the exponential explosion challenge. This breakthrough enables practical applications of quantum computers in chemistry and physics.
Researchers at Kazan Federal University developed cryptographic algorithms for quantum networks, which can facilitate fast and secure information transfer. The algorithms, known as quantum hash functions, can protect against mistakes and be used for authentication in various areas.
The researchers successfully demonstrated a new level of control over photons encoded with quantum information, performing distinct operations on two qubits in parallel. This breakthrough enables universal quantum computing and improves energy efficiency, stability, and control.
A team from INRS has successfully generated high-dimensional cluster states and implemented novel quantum operations, paving the way for one-way quantum computing. This breakthrough uses photons as a data medium, leveraging their unique properties to increase information storage capacity and boost computational power.
Researchers at the University of Bristol have discovered fundamental limits on the postselection technique used to test quantum mechanics. They found that as complex quantum systems are built, fewer and fewer entangled states can be reached using postselection alone.
Physicists at the University of Warwick have developed a new test to spot quantum coherence in nature, which could lead to breakthroughs in quantum technologies like computers and sensors. The test clarifies the conditions under which biological systems may exploit quantum mechanics.
Researchers at UPV/EHU designed a model of quantum artificial life that encodes quantum behaviors similar to living systems. The model, executed on an IBM ibmqx4 cloud quantum computer, simulates birth, self-replication, interaction between individuals and the environment.
Bell nonlocality and EPR steering are characterized using strict definitions, establishing a foundation for defining metric functions of Bell locality and EPR steering. The study generalizes previous results and provides sufficient conditions for determining the quantum state's EPR steerability.
The Q.Link.X project funds a quantum repeater development to overcome transmission link limitations in optical fiber-based quantum communication, aiming for distances of up to ten or 100 kilometers.
ETH Zurich researchers have demonstrated a novel quantum error correction technique that can monitor and correct errors in real-time. The technique, which uses trapped ions to encode quantum information, has been successfully tested with repeated measurements on the same system, exceeding previous experimental limits.
Researchers at UAlberta developed a new technique for storing quantum information in ultracold rubidium atoms, enabling efficient quantum communication and scalable technologies. The novel method uses clouds of atoms to store pulses of light, with significantly reduced technical requirements.
Researchers successfully generate three-photon entanglement in three dimensions, increasing information capacity and paving the way for future technologies such as quantum computers and encryption. This breakthrough could enable teleportation of complex quantum systems and has significant implications for quantum communication networks.
Researchers create integrated quantum transceiver capable of sending and receiving quantum information over various waveforms, enabling fast, robust and photon-efficient quantum communications. The team aims to develop a single-chip system that can be used for both free space and optical fiber communication.
Scientists at the University of Sussex have developed a method to reduce disruptive environmental effects on trapped ion quantum computers. The breakthrough enables the creation of large-scale quantum computers capable of solving complex problems, with potential applications in fields such as medicine, finance, and agriculture.
A world-first criterion for quantum supremacy has been established using the Tianhe-2 supercomputer, demonstrating a significant advantage over classical computing in boson sampling tasks. The research sets the stage for future quantum computing advancements and paves the way for experimental implementation of quantum devices.
An Australian research team has experimentally realised a crucial combination of two fundamental quantum techniques on a silicon chip, confirming the promise of silicon for quantum computing. The integrated design combines single-spin addressability and a qubit read-out process vital for quantum error correction.
Researchers at UC Berkeley have developed a practical proposal known as random circuit sampling (RCS) to prove quantum supremacy in quantum computers. This technique uses complex mathematical constructs to demonstrate the 'quantum accent' of a device, making it difficult for classical computers to replicate.
The Quantum Flagship program will consolidate Europe's best quantum physics research and transfer technology to the market. Aalto University is involved in three projects: QMiCS, macQsimal, and S2QUIP, focusing on quantum communication, ultra-sensitive magnetic sensors, and photon-emitting quantum chips.
Rare earth ions exhibit potential for storing quantum states and interacting with each other, enhancing computation capacity. Researchers aim to establish scalable quantum technologies using these elements.
A new quantum network is being developed in the Chicago area to test unhackable communications, using principles of quantum physics to send information. The project aims to create a secure network with wide-ranging impact on communications and national security.
Researchers at QuTech have developed a comprehensive guide towards a world-wide quantum internet, describing six phases of network development from simple qubit networks to fully quantum-connected computers. This will enable secure quantum communications and applications such as precise clock synchronization and virtual telescopes.
Scientists have developed a quantum circuit that demonstrates the advantage of quantum computers over classical systems. The new design exploits quantum physics' non-locality to solve complex problems efficiently. This breakthrough brings us closer to realizing near-term experimental realizations of quantum algorithms.
Researchers build systems reproducing quantum predictions with classical models, suggesting a boundary for 'true' quantum phenomena beyond single-particle interactions. Quantum entanglement remains an unexplained mystery.
The U.S. Department of Energy's Argonne National Laboratory will receive over $11 million in funding for four major projects focused on quantum information science. These studies aim to develop new computing and sensing technologies, including the creation and manipulation of quantum bits and the study of quantum entanglement.
A £5.5m partnership will study and develop quantum software for modelling and simulation, helping to establish a UK quantum software industry. Scientists hope to discover new materials and chemicals through this work, impacting sectors like energy and healthcare.
Researchers have developed the first device that can measure the single-electron charge of one quantum dot using a second as a sensor, enabling real-time detection of single-electron tunneling. This breakthrough could aid in the development of advanced nanoelectronics and quantum computing.
Researchers have developed a topological photonic chip to process quantum information, demonstrating high-fidelity quantum interference and paving the way for scalable quantum computers. The breakthrough could lead to new materials, generation computers, and deeper understanding of fundamental science.
Researchers at University of Turku and University of Science and Technology of China have successfully controlled the flow of quantum information into the environment, preventing its disappearance. This breakthrough has significant implications for basic research and the development of quantum technologies.
Researchers have discovered a quantum state of matter that can be tuned at will, opening possibilities for next-generation nanotechnologies and quantum computing. The discovery allows for the control of an exotic topological quantum magnet at the quantum level.
Yale researchers successfully teleported a quantum gate between logical qubits, enabling deterministic inter-module operations and advancing modular quantum computing. This breakthrough is crucial for building large-scale, error-correctable quantum computers.
Qrypt has licensed a novel cybersecurity technology from Oak Ridge National Laboratory to fortify encryption methods. The company will incorporate the quantum random number generator into its platform, using unique and unpredictable encryption keys to create virtually impenetrable communications.
The team developed a multi-degree-of-freedom multiplexed solid-state quantum memory with high multimode capacity and demonstrated photon pulse operation functions with time and frequency DOFs. The device enables coherent manipulation of quantum states and can serve as a quantum mode converter with high fidelity.
Physicists have been debating whether Einstein's equivalence principle extends to the quantum world. A University of Queensland researcher and her team found that it does, with implications for our understanding of gravity and mass in quantum physics.
A Rice University scientist has developed a new method to diagnose quantum computers, reducing the need for expensive measurements. This approach uses compressed sensing to minimize data while ensuring accurate results, making it possible to validate even large-scale systems.
A team of researchers at the University of Bristol has developed a silicon chip that can guide single photons to encode qubits, demonstrating a fully functional quantum processor. This breakthrough device shows promise for scalable and low-cost production of quantum computers.
A revised roadmap outlines the current status of quantum technology, examining its challenges and goals. The roadmap identifies key areas of focus, including quantum communication, computing, simulation, metrology, and control.
Researchers at Yokohama National University have demonstrated fault-tolerant universal holonomic quantum gates, paving the way for fast and reliable quantum computing. The team achieved this breakthrough by manipulating a geometric spin qubit in an NV center, enabling precise control over long-lived quantum memories.
Scientists study quantum interference in a three-level quantum system and demonstrate complete control over individual electron spins. The researchers extend coherence time by a hundredfold, providing protection for fragile quantum states and opening new perspectives for sensor technology.
Assistant Professor Madhab Neupane has discovered a new material with multiple quantum properties, which could become the foundation for quantum computers and long-lasting memory devices. The discovery is expected to increase computing power and reduce energy consumption for electronics.