Articles tagged with Quantum Entanglement
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Researchers at the University of Arizona are using quantum entanglement to detect radio frequencies with unprecedented sensitivity and accuracy. By combining RF photonics sensing and quantum metrology, they've created a technology that can improve GPS systems, astronomy labs, and biomedical imaging capabilities.
Researchers at Stockholm University have developed a method to speed up quantum computing using giant Rydberg ions, which can exchange quantum information in under a microsecond. This breakthrough could lead to the creation of scalable quantum computers for complex calculations.
Researchers have developed a new approach to speed up trapped ion quantum computing using giant Rydberg ions, increasing computational capacity exponentially. The experimental work confirms that the system can scale up without slowdowns, enabling large-scale quantum computation.
The researchers have demonstrated a world record for the largest spectral, color-tuning range from an atomically thin quantum system. By stretching the material, they induced mechanical expansion of the quantum source, resulting in dramatic tuning range of colors emitted by quantum light.
Entangling disparate electromagnetic fields with a vibrating membrane creates novel ways to solve the long-standing challenge of sharing entanglement between distant quantum computers. The result enables microwave-optical entanglement, a key step towards solving this problem.
Researchers at Caltech have successfully created a tiny optical cavity that can store and transmit quantum information, a crucial step towards building a quantum internet. The cavity allows scientists to efficiently collect and detect photons emitted by rare-earth ytterbium ions, enabling the creation of a quantum network.
A team of researchers has developed a new method for generating quantum-entangled photons in the previously inaccessible spectral range of 2.1 micrometers. This breakthrough can enhance the security of satellite-based communications by making end-to-end encryption possible on sunny and cloudy days.
Researchers explore whether intuition on interaction is justified in quantum mechanics. They show that entangled states can be generated without direct contact using the fundamental indistinguishability of particles.
Harvard and MIT researchers have developed a prototype quantum node that can correct for signal loss, paving the way for a practical quantum internet. The breakthrough enables secure communication over long distances using entangled particles, making it impossible for eavesdroppers to intercept messages.
Researchers from ITMO University have predicted a novel type of topological quantum state in two-photon systems. A new experimental method using classical electric circuits has been developed to test these predictions, offering valuable information for the engineering of optical chips and quantum computers.
Researchers directly observed a Kondo screening cloud, a quantum phenomenon that masks magnetic impurities in materials. The study confirmed theoretical predictions and provided insights into the spatial extension of the cloud, which is universally scaled by the inverse of the Kondo temperature.
Researchers successfully measured and controlled the length of the Kondo cloud, a phenomenon discovered in the 1930s that explains resistance increase in certain metals. The findings provide insights into multiple impurity systems, including high-temperature superconductors.
Physicist Esther Wertz receives NSF CAREER award to investigate nanometer-scale metal structures controlling light at the quantum limit. Her work aims to create a single photon transistor by manipulating quantum states without destroying superposition.
Researchers at ETH Zurich create a five-metre long microwave quantum link, demonstrating the feasibility of quantum local networks. The breakthrough could enable the development of powerful quantum computers by connecting smaller devices in a cluster.
Physicists at Rutgers University have discovered that applying a magnetic field can create a 'quantum critical point' in certain materials, leading to infinite quantum fluctuations and the formation of superconductors. This finding provides important clues for developing room temperature superconductors.
Researchers from the Institute for Quantum Computing at the University of Waterloo have made a groundbreaking discovery by directly splitting one photon into three. The achievement uses the spontaneous parametric down-conversion method and creates a non-Gaussian state of light, a critical ingredient for gaining a quantum advantage.
Researchers at USTC enhance quantum orienteering using entangling measurements via photonic quantum walks, achieving unprecedented efficiency. The method demonstrates a nonclassical phenomenon due to entanglement in quantum measurements, offering an effective recipe for realizing entangling measurements.
Researchers propose updated equations that simplify calculations for distinguishing between two types of 'non-Gaussian curve' and genuinely quantum states. This approach could speed up advances in quantum communication and computation.
Researchers at the University of Chicago have predicted a new state of matter that could efficiently conduct both electricity and energy. They found that quantum entanglement enables the coexistence of these two properties in certain materials, which could lead to significant technological advancements.
Scientists at Japan Science and Technology Agency developed a method to couple a magnetic sphere with a sensor using quantum entanglement, enabling single-shot detection of magnetic excitations. The device's sensitivity is comparable to that of theoretical dark-matter particles, opening new avenues for research.
Researchers directly observe a dynamical topological order parameter to probe coherent quantum time evolution in quantum walks. This allows for the classification and study of quantum walks using a novel approach.
The study reveals a new electronic state of matter where electrons form bunches of two, three, four and five electrons behaving like new types of particles. Researchers recognized a sequence within Pascal's Triangle that helped them understand the discovery, which features properties related to quantum entanglement.
Researchers from Trinity College Dublin used supercomputers to simulate quantum systems and found a deep link between entanglement and thermalisation. The study provides new insights into the fundamental process of thermalisation and its relationship with quantum mechanics.
A team from Wits and HUST shows that multiple quantum patterns of twisted light can be transmitted across a conventional fibre link, enabling a new approach to realising a future quantum network. The researchers demonstrated transfer of multi-dimensional entanglement states over 250m of single-mode fibre.
Researchers successfully demonstrated the transport of an entangled state between an atom and a photon via an optic fiber over a distance of up to 20 km. This achievement sets a new record for quantum communication and confirms that quantum information can be distributed on a large scale with little loss.
Researchers from ORNL and Purdue University successfully design a quantum frequency beam splitter using standard lightwave communications technology, enabling controlled photon interactions. The team also demonstrates a coincidence-basis controlled-NOT gate and completes the first demonstration of a frequency tritter.
Physicists observe entanglement among trillions of flowing electrons in a rare quantum phase transition, revealing new insights into quantum criticality. The study sheds light on the behavior of exotic materials and their potential applications in computing and communications.
A new protocol enables better measurement and comparison of multiple quantum states across devices and time, improving quantum information processing.
Physicists at NIST have achieved a major new feat by creating a bizarre quantum interference between two photons of markedly different colors, originating from different buildings. This experiment is an important step towards future quantum communications and computing.
Researchers discovered an abrupt shift in electron behavior in high-temperature superconductors, revealing a 'strange metal' state with collective electrons. This finding challenges existing theories and opens new avenues for exploration.
Physicists from the University of Exeter have theoretically found a quantum system where time correlations survive for an infinitely long time, breaking the no-go theorem for genuine time crystals. The discovery could lead to the development of novel atomic clocks and shed light on condensed matter physics.
Using patterns of light, scientists aim to build a faster and more secure quantum network. The research could lead to higher information capacity and stronger security in quantum protocols.
The development of optical vortices has been divided into three stages: fundamental theories, application development, and technology breakthrough. The recent stage has seen significant advancements in metasurface and OAM-multiplexing, enabling high-capacity optical communication and novel nonlinear phenomena.
Researchers use structured light to create a larger encoding alphabet, stronger security and better resistance to noise. The use of patterns of light enables higher information capacity and improved robustness against noise.
Scientists have created a new method to isolate quantum images from classical illumination, enabling ultra-sensitive microscopy and potential applications in quantum communications. By leveraging image distillation, they can retrieve 'quantum illuminated' images even with high classical illumination.
Researchers used 53 entangled qubits to solve a complex problem that would take 10,000 years on a classical supercomputer. The feat showcases the power of quantum computing and has significant implications for cryptography, machine learning, and materials science.
Researchers have successfully created an efficient quantum-mechanical light-matter interface using a microscopic cavity, enabling interactions between individual photons and artificial atoms. The experiment demonstrates the potential for new quantum technological applications in photonics and quantum information processing.
Researchers have successfully created a large-scale quantum processor made entirely of laser light, providing a scalable solution to overcome current limitations in quantum computing. The design allows for the generation of a massive two-dimensional cluster state with built-in scalability.
Scientists at DTU Physics have created a two-dimensional lattice structure of 30,000 entangled light pulses, paving the way for less expensive and more powerful quantum computers. This breakthrough uses room-temperature materials and avoids the need for costly refrigeration technology.
Scientists at UNIGE have entangled three pairs of photons to create a highly-correlated triangle, exhibiting strong quantum correlations. This discovery could lead to the development of new ultra-secure encryption keys and revive fundamental quantum physics research.
A research team investigated the possibility of negative energy in quantum physics, finding that while energy can be less than zero under certain conditions, it must be paid back. The study placed tight bounds on negative energy and connected it to quintessential properties of quantum mechanics.
Scientists from Hiroshima University and Indian Institute of Technology Bombay have found a way to determine the state of a quantum system by analyzing data from outside the system. By carefully reading the quantum data, they can restore the initial superposition of possible outcomes.
The DOE is investing $21.4 million in quantum information science research, focusing on particle physics and fusion energy sciences. This funding will support projects that explore the application of quantum computing to analyze particle physics data and simulate complex systems.
A team of LSU researchers has successfully demonstrated a method to generate groups of photons with manipulable quantum properties, known as multiphoton states. By subtracting out some photons, they can reshape the form of the wavepacket and artificially increase the number of photons in it.
Researchers at the University of Illinois created a unique quantum-mechanical state, a three-photon color-entangled W state, which retains entanglement even with one photon lost. This state enables novel quantum applications and tests fundamental physics.
A unified framework has been developed to account for the apparent breakdown between classical and quantum physics. Researchers tested this framework using a quantum satellite called Micius, where they produced and measured entangled particles. The results ruled out one version of the theory but left another open to testing.
The researchers used acoustic waves in a classical environment to demonstrate nonseparability without the time limitations and fragility of quantum information processing. This approach has the potential to bring significant improvements in data processing efficiency and stability.
Researchers from Dartmouth College and MIT successfully detect and characterize complex non-Gaussian noise processes in superconducting quantum computing systems. This breakthrough advances the development of more precise qubit systems, which is essential for building scalable and high-performing quantum computers.
The new clock platform combines near-continuous operation with strong signals and high stability, featuring unique possibilities for enhancing clock performance. Preliminary data suggest the design is promising, with the tweezer clock providing self-verifying performance 96% of the time.
Researchers at UC Santa Barbara discovered a new material state with quantum disordered liquid-like magnetic moments in sodium ytterbium oxide. This finding confirms the existence of a long-sought 'quantum spin liquid state,' which is desirable due to its association with entanglement.
Researchers developed a new method to write and read quantum messages with very fast particles, overcoming the limitations of standard techniques. The novel technique guarantees unambiguous decoding even when particles behave according to both quantum mechanics and special relativity.
Researchers at the University of Innsbruck have successfully transferred quantum entanglement between matter and light over 50 kilometers using fiber optic cables. This achievement paves the way for building inter-city quantum networks, which could enable secure communication and distributed sensor networks.
Researchers have successfully described what happens when a massive object is placed in a quantum superposition state near clocks, defying classical descriptions. This discovery reveals that quantum time order can arise, leading to new physical effects and potential applications for quantum technologies.
Researchers have demonstrated a loophole-free Bell test with the measurement settings determined by remote cosmic photons, verifying the completeness of quantum mechanics with high-confidence probability. The experiment closed loopholes that had long confounded tests of quantum mechanics, providing new evidence of quantum interactions.
Scientists have created a new record by entangling 20 quantum bits in a 'Schrödinger's cat' state, exceeding the previous limit of 14 qubits. The team used a programmable quantum simulator to control and manipulate the qubits, demonstrating the potential for quantum technologies.
Scientists have developed a practical method to measure entanglement in chemical reactions, which could lead to breakthroughs in designing better solar energy systems and understanding the fundamental principles of chemistry. The study generalized Bell's inequality to include continuous measurements, validating its application in chemi...
Researchers have developed a new method to create quantum light sources in atomically thin material layers, which will pave the way for optical circuits and potentially lead to applications such as quantum sensors, transistors, and secure encryption technologies.
Researchers successfully transferred and verified angular momentum basis of quantum information from laser light to an electron trapped on a quantum dot. This achievement marks a significant step towards realizing a quantum internet with secure and rapid quantum information transmission.
Purdue University researchers have built a gate that manipulates quantum information in a predictable and deterministic way, enabling efficient and stable quantum information processing. The gate creates one of the largest entangled states of quantum particles to date, using four qudits encoded in only two photons.
The City College of New York research team, led by Professor Robert R. Alfano, has identified a new class of photons dubbed 'Majorana photons.' These unique photons have distinct properties that enable deeper penetration into brain tissues and microtubules, providing fundamental information about the brain's structure and function.