Prototype is the first realization of a scalable, hardware-efficient quantum computing architecture based on bosonic quantum error correction.
Category: quantum physics – Page 4
This quantum light manipulation breakthrough paves the way for unprecedented technologies.
Scientists from the University of Basel and the University of Sydney successfully manipulated and identified interacting packets of light energy, or photons, with unprecedented precision.
This breakthrough, published in Nature Physics, marks the first-ever observation of stimulated light emission at the single-photon level—a phenomenon first predicted by Albert Einstein in 1916.
By measuring the time delay between photon interactions, researchers demonstrated how photons could become entangled in a “two-photon bound state,” opening up new possibilities for quantum computing and enhanced measurement techniques.
This discovery has profound implications for photonic quantum computing and metrology, particularly in fields like biological microscopy, where high-intensity light can damage delicate samples. Dr. Sahand Mahmoodian, a leading researcher on the project, emphasized that harnessing quantum light could lead to more precise measurements with fewer photons. Meanwhile, tech companies like PsiQuantum and Xanadu are already exploring how this research could contribute to fault-tolerant quantum computing. As scientists refine their ability to manipulate quantum light, the door opens to a future of more powerful computing, ultra-sensitive sensors, and revolutionary advancements in technology.
Caltech engineers have made a breakthrough in quantum communication by successfully linking two quantum nodes with multiple qubits.
Using a novel multiplexing technique, they drastically increased the data transmission rate, setting the stage for large-scale quantum networks.
Laying the groundwork for quantum networks.
A recent study from the University of Eastern Finland (UEF) examines how photons—the fundamental particles of light—behave when they encounter sudden changes in a material’s properties over time. This research reveals intriguing quantum optical effects that could advance quantum technology and help establish an emerging field known as four-dimensional quantum optics.
Four-dimensional optics is a field of research that explores how light interacts with structures that change both in time and space. This emerging area has the potential to revolutionize microwave and optical technologies by enabling capabilities such as frequency conversion, amplification, polarization control, and asymmetric scattering. Because of these possibilities, it has drawn significant interest from researchers worldwide.
In recent years, substantial progress has been made in this field. For example, a recent international study published in Nature Photonics.
PsiQuantum has detailed the photonic quantum chips and cooling system it plans to use for a quantum computer with a million qubits.
The Omega quantum photonic chipset is purpose-built for utility-scale quantum computing and produced by Global Foundries in New York on 300mm wafer. The technology was detailed in a paper in Nature submitted last June and published this week.
This paper shows high-fidelity qubit operations, and a simple, long-range chip-to-chip qubit interconnect – a key enabler to scale that has remained challenging for other technologies.
Microsoft’s Majorana 1 quantum chip introduces a breakthrough Topological Core, enabling stable and scalable qubits.
By leveraging topoconductors, this innovation paves the way for million-qubit machines capable of solving complex scientific and industrial challenges. With DARPA
Formed in 1958 (as ARPA), the Defense Advanced Research Projects Agency (DARPA) is an agency of the United States Department of Defense responsible for the development of emerging technologies for use by the military. DARPA formulates and executes research and development projects to expand the frontiers of technology and science, often beyond immediate U.S. military requirements, by collaborating with academic, industry, and government partners.
Using the Frontier supercomputer, researchers have cracked a major challenge in nuclear physics: accurately predicting nuclear structure and forces at an unprecedented level of detail.
Their discoveries, including new insights into the shape-shifting nature of the 30-neon nucleus, could revolutionize scientific fields ranging from quantum mechanics to national security.
Revolutionizing Nuclear Predictions with Frontier.
The researchers indicate that several challenges remain. The current system operates at cryogenic temperatures, which limits practical applications. While photons themselves can function at room temperature, the quantum dot requires cooling to maintain stability. Researchers are exploring alternative materials and designs that could allow operation at higher temperatures.
Additionally, the experiment used a single quantum dot, which is not easily scalable to large numbers of qubits needed for universal quantum computing. Future work will need to integrate multiple quantum dots or alternative photon sources that can be mass-produced with high consistency.
Another limitation is the reliance on superconducting detectors with an efficiency of 79%. If detection efficiency is improved beyond 93.7%, the overall system efficiency could surpass the required threshold even further. Advancements in superconducting nanowire technology suggest this is feasible in the near future.