Trapping polaritons in an engineered quantum box
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially "coherent" quantum state......»»
Quantum dark states lead to an advantage in noise reduction
While atomic clocks are already the most precise timekeeping devices in the universe, physicists are working hard to improve their accuracy even further. One way is by leveraging spin-squeezed states in clock atoms......»»
Study finds quantum state of a rotating superfluid can discharge in three ways
According to a recent study from the University of Helsinki, published in the journal Physical Review Letters, a vortex of a superfluid that has been quantized four times has three ways of dividing, depending on the temperature......»»
Diamond quantum memory with Germanium vacancy exceeds coherence time of 20 ms
The color centers of diamond are the focus of an increasing number of research studies, due to their potential for developing quantum technologies. Some works have particularly explored the use of negatively-charged group-IV diamond defects, which ex.....»»
A new design for quantum computers
Creating a quantum computer powerful enough to tackle problems we cannot solve with current computers remains a big challenge for quantum physicists. A well-functioning quantum simulator—a specific type of quantum computer—could lead to new disco.....»»
Trapping sulfate to benefit health, industry and waterways
Scientists have developed a new method to measure and remove sulfate from water, potentially leading to cleaner waterways and more effective nuclear waste treatments......»»
New thermometry method reveals that compressing a gas may lead to cooling
An international research team from Innsbruck and Geneva has developed a new thermometry method to measure temperatures for low-dimensional quantum gases. With this method it was found that compressing a gas may lead to cooling. The results on this c.....»»
A new record for atom-based quantum computers: 1,000 atomic qubits and rising
Making quantum systems more scalable is one of the key requirements for the further development of quantum computers because the advantages they offer become increasingly evident as the systems are scaled up. Researchers at TU Darmstadt have recently.....»»
Deciphering quantum enigmas: The role of nonlocal boxes in defining the boundaries of physical feasibility
A team of scientists from the University of Ottawa is offering insights into the mysteries of quantum entanglement. Their recent study, titled "Extending the known region of nonlocal boxes that collapse communication complexity" and published in Phys.....»»
A "quantum leap" at room temperature: Ultra-low noise system achieves optical squeezing
In the realm of quantum mechanics, the ability to observe and control quantum phenomena at room temperature has long been elusive, especially on a large or "macroscopic" scale. Traditionally, such observations have been confined to environments near.....»»
Fundamental equation for superconducting quantum bits revised
Physicists from Forschungszentrum Jülich and the Karlsruhe Institute of Technology have uncovered that Josephson tunnel junctions—the fundamental building blocks of superconducting quantum computers—are more complex than previously thought......»»
Researchers solve a foundational problem in transmitting quantum information
Future quantum electronics will differ substantially from conventional electronics. Whereas memory in the latter is stored as binary digits, the former is stored as qubits, which can take many forms, such as entrapped electrons in nanostructures know.....»»
A multi-ensemble atomic clock enhanced using quantum computing tools
Atomic clocks are a class of clocks that leverage resonance frequencies of atoms to keep time with high precision. While these clocks have become increasingly advanced and accurate over the years, existing versions might not best utilize the resource.....»»
Flowermon: A superconducting qubit based on twisted cuprate van der Waals heterostructures
Quantum technology could outperform conventional computers on some advanced optimization and computational tasks. In recent years, physicists have been working to identify new strategies to create quantum systems and promising qubits (i.e., basic uni.....»»
How semiconductor defects could boost quantum technology
In diamonds (and other semiconducting materials), defects are a quantum sensor's best friend. That's because defects, essentially a jostled arrangement of atoms, sometimes contain electrons with an angular momentum, or spin, that can store and proces.....»»
New 3D printing method uses ice to build a template for artificial blood vessels in engineered tissue
Over 100,000 individuals in the United States are currently in need of organ transplants. The demand for organs, such as hearts, kidneys, and livers, far exceeds the available supply and people sometimes wait years to receive a donated organ. Approxi.....»»
Researchers demonstrate multi-photon state transfer between remote superconducting nodes
Over the past few decades, quantum physicists and engineers have been trying to develop new, reliable quantum communication systems. These systems could ultimately serve as a testbed to evaluate and advance communication protocols......»»
Alternate qubit design does error correction in hardware
Early-stage technology has the potential to cut qubits needed for useful computers. Enlarge (credit: Nord Quantique) There's a general consensus that performing any sort of complex algorithm on quantum hardware will have.....»»
Researchers show classical computers can keep up with, and surpass, their quantum counterparts
Quantum computing has been hailed as a technology that can outperform classical computing in both speed and memory usage, potentially opening the way to making predictions of physical phenomena not previously possible......»»
Evidence that atomically thin hafnium telluride is an excitonic insulator
The condensation of excitons with non-zero momentum can give rise to so-called charge density waves (CDW). This phenomenon can prompt the transition of materials into a fascinating new quantum phase, known as an excitonic insulator......»»
Physicists detect elusive "Bragg glass" phase with machine learning tool
Cornell quantum researchers have detected an elusive phase of matter, called the Bragg glass phase, using large volumes of X-ray data and a new machine learning data analysis tool. The discovery settles a long-standing question of whether this almost.....»»