January 19, 2025
A comparative illustration of GCIM and VQE on a two-electron four-spin-orbital system.

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 […]

The contraction of three-point function from two-point hadron propagators and glue operators. The different colors represent different contributions from the grid points of the source.

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 processing input spike stimuli.

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 […]

A study co-directed by Professor Roberto Morandotti of Institut national de la recherche scientifique (INRS) in collaboration with teams from Germany, Italy, and Japan opens the door to cutting-edge solutions that could contribute to the realization of a system capable of processing quantum information in a simple yet powerful way.

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 […]

Orbital Angular Momentum Quantum-based VQE – Hydrogen (H2) Molecule / A quantum processing device based on orbital angular momentum qubit states is implemented by using spatial light modulators. The ground state energy of a H2 molecular model based is estimated on VQE.

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 […]

Evolution paths of the single control qubit on the Bloch sphere in the hybrid approach to Grover’s algorithm. Credit: Sinitsyn, N. and Yan, B., Topologically protected Grover’s oracle for the partition problem. Physical Review A 108, 022412

A Hybrid Approach to Overcoming Computational Challenge

Quantum computing represents a revolutionary frontier in computational technology, promising unprecedented computational power. However, the field has long grappled with significant technical challenges that have limited its practical implementation. This research introduces an innovative hybrid […]

Comparison of V-scores of VQE ansatzes versus energy relative errors on a 10 sites TFIM.

V-Score: A New Benchmark for Quantum and Classical Computing

Scientists are developing innovative ways to benchmark the potential of quantum computing in solving complex scientific problems, particularly in understanding material systems. The research, led by physicist Giuseppe Carleo at the Swiss Federal Institute of […]

Schematic quantum circuits and devices.

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. […]

or the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of the green laser beam. Credit: R. A. Abrahao, H. P. N. Morin, J. T. R. Pagé, A. Safari, R. W. Boyd, J. S. Lundeen

Lasers That Can Block Light Itself

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 […]