Quantum Optics: Synthetic Atoms and Matter Waves
Researchers used arrays of synthetic atoms and ultracold matter waves to demonstrate previously unseen collective spontaneous emission effects.
Quantum Coherence Discovered in Classical Light
The scientific community has made a groundbreaking discovery that challenges our traditional understanding of classical and quantum physics. Researchers have identified quantum coherence within classical light fields, a finding that questions long-held assumptions about the […]
Six Mechanical Oscillators Synchronized in Collective Quantum State
Scientists achieved a breakthrough by synchronizing six mechanical oscillators into a collective quantum state using a superconducting platform.
Efficient fault-tolerant implementations of non-Clifford gates with reconfigurable atom arrays
To achieve scalable universal quantum computing, scientists need to implement a universal set of logical gates fault-tolerantly, for which the main difficulty lies with non-Clifford gates. Researchers have demonstrated that several characteristic features of the […]
First signs of stripe formation observed in cold-atom quantum simulator
In a new study, researchers from the Max Planck Institute of Quantum Optics under the lead of Timon Hilker demonstrated evidence of stripe formation, i.e. extended structures in the density pattern, in a cold-atom Fermi-Hubbard […]
Simulating non-completely positive actions via exponentiation of Hermitian-preserving maps
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 […]
Time-bin entangled Bell state generation and tomography on thin-film lithium niobate
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 […]
Long-range data transmission in a fault-tolerant quantum bus architecture
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 dispersive readout of a spin qubit with squeezed microwave and resonator nonlinearity
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. […]
Breakthrough in Compact Quantum Laser Technology
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 […]
Quantum networks with coherent routing of information through multiple nodes
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 […]
Breakthrough in Quantum Teleportation
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 […]
Breaking the Grid: A Modular Quantum Computing Revolution
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 […]
Quantum Critical Metals: Unraveling the Mysteries of Strange Electronic Behaviors
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 […]
Quantum Control: Mapping the Predictable Paths of Electrons
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 […]
Scalable Quantum Computing with Integrated Atom-Photonic Systems
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 […]
How to Shrink Quantum Computer Components by 1,000x
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 […]
QEC codes and encoders with a noise-aware reinforcement learning agent
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 […]
Quantum chemistry using constrained optimization
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 […]
Subatomic Mass: Trace Anomaly Reveals Particle Structure
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 […]
A Quantum Leaky Integrate-and-Fire (QLIF) Neuron
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 […]
Quantum Walks: Unlocking New Dimensions of Light
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 […]
AI and Quantum Computing Revolutionize Molecular Science
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 […]
Breaking Quantum Barriers: A New Coupler Brings 99.98% Gate Fidelity
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 […]
Quantum Computer Information Loss
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. […]