Legitimate quantum operations must adhere to principles of quantum mechanics, particularly the requirements of complete positivity and trace preservation. Yet, non-completely positive maps, especially Hermitian-preserving maps, play a crucial role in quantum information science. Researchers […]
Optical quantum communication technologies are making the prospect of unconditionally secure and efficient information transfer a reality. The possibility of generating and reliably detecting quantum states of light, with the further need of increasing the […]
Scientists propose a fault-tolerant scheme for generating long-range entanglement at the ends of a rectangular array of qubits of length R. It is realized by a constant-depth circuit producing a constant-fidelity Bell-pair (independent of R) for local […]
Fast and high-fidelity qubit measurement is essential for Quantum Error Correction (QEC) in universal quantum computing. This study examines dispersive measurement of a spin in a semiconductor double quantum dot using a nonlinear microwave resonator. […]
UC Santa Barbara researchers have developed a breakthrough in laser technology: a compact, chip-scale laser that matches or exceeds the performance of much larger laboratory systems while being significantly more affordable. Led by Professor Daniel […]
Large-scale communication networks, such as the Internet, rely on routing packets of data through multiple intermediate nodes to transmit information from a sender to a receiver. Researchers has developped a model of a quantum communication […]
Northwestern University engineers have accomplished a significant feat by successfully demonstrating quantum teleportation through fiber optic cables while simultaneously carrying regular Internet traffic. Led by Professor Prem Kumar, the team published their findings in Optica […]
Researchers at the University of Chicago’s Pritzker School of Molecular Engineering have developed a groundbreaking quantum processor design that challenges traditional computational architectures. Unlike conventional quantum chips that arrange qubits in rigid 2D grids, this […]
The groundbreaking study by Rice University physicist Qimiao Si delves into the fascinating world of quantum critical metals, materials that defy conventional physics by exhibiting extraordinary behavior at low temperatures. Published in Nature Physics, the […]
Researchers at UC Santa Cruz have experimentally validated a 40-year-old theoretical prediction about electron behavior in confined spaces, marking a significant breakthrough in quantum physics. Led by physicist Jairo Velasco, Jr., the team’s study published […]
This groundbreaking research by University of Chicago scientists presents a transformative approach to quantum computing by ingeniously merging trapped atom arrays with photonic devices. Led by Assistant Professor Hannes Bernien, the research team has developed […]
Researchers at Nanyang Technological University in Singapore (NTU), have developed an innovative method to produce entangled photon pairs using extraordinarily thin materials, potentially revolutionizing quantum computing technology. Led by Prof Gao Weibo, the team successfully […]
In the ongoing race towards experimental implementations of quantum error correction (QEC), finding ways to automatically discover codes and encoding strategies tailored to the qubit hardware platform is emerging as a critical problem. Reinforcement learning […]
Hybrid quantum-classical approaches offer potential solutions to quantum chemistry problems, yet they often manifest as constrained optimization problems. Scientists have explored the interconnection between constrained optimization and generalized eigenvalue problems through the Unitary Coupled Cluster […]
Nuclear physicists have made a significant breakthrough in understanding the mass distribution within subatomic particles, specifically pions and protons, through advanced numerical calculations that leverage the trace anomaly in spacetime. The research focuses on exploring […]
Quantum Machine Learning (QML) is in a period of rapid development and discovery, however it still lacks the resources and diversity of computational models of its classical complement. With the growing difficulties of classical models […]
Researchers at the Institut National de la Recherche Scientifique (INRS), Canada, have achieved a groundbreaking advancement in quantum photonics, developing a synthetic photonic lattice that can generate and manipulate quantum states of light. Led by […]
The landscape of scientific research is rapidly transforming through groundbreaking advancements in artificial intelligence and quantum computing, with recent developments promising revolutionary impacts across multiple disciplines. The Nobel Prize in Chemistry has recognized the pivotal […]
In the rapidly evolving field of quantum computing, researchers from the RIKEN Center for Quantum Computing and Toshiba have achieved a significant breakthrough that promises to enhance the reliability and performance of quantum systems. Their […]
npj Quantum Information, Published online: 26 November 2024; doi:10.1038/s41534-024-00918-6 Quantum computing platforms are subject to contradictory engineering requirements: qubits must be protected from mutual interactions when idling (‘doing nothing’), and strongly interacting when in operation. […]
Light, being massless, casts no shadow; under ordinary circumstances, photons pass right through each other unimpeded. Researchers, in the Department of Physics at uOttawa, along with the Boyd Research Group, have demonstrated a laser beam […]
Researchers from Martin Luther University Halle-Wittenberg (MLU) and the Max Planck Institute of Microstructure Physics in Halle have developed a groundbreaking method to analyze magnetic nanostructures with exceptional precision. This technique achieves a resolution of […]
npj Quantum Information, Published online: 22 November 2024; doi:10.1038/s41534-024-00917-7 Repeating a gate sequence multiple times amplifies systematic errors coherently, making it a useful tool for characterizing quantum gates. However, the precision of such an approach […]
Quantum physicists at the University of Birmingham have achieved a groundbreaking advancement in understanding photons, successfully defining their precise shape and interaction with surrounding environments for the first time. Published in Physical Review Letters, this […]
Korean researchers from DGIST and UNIST have achieved a significant breakthrough in quantum information technology by discovering a novel quantum state called the exciton-Floquet synthesis state. The collaborative research team, led by Professor Jaedong Lee […]