Scaling of the one-norm and number of unique, non-zero coefficients (NNZ) for test systems.

First-Quantization: A Quantum Leap for Molecular Energy Solvers

Researchers have developed a novel first-quantization method for quantum computing that achieves significant improvements in efficiency for molecular energy calculations across arbitrary basis sets, demonstrating both asymptotic speedup in molecular orbital calculations and orders-of-magnitude resource reductions when using dual plane waves compared to second-quantization approaches.

An artist’s impression of an analog quantum computer in which atoms are manipulated by lasers to simulate quantum many-body systems. Credit: Image courtesy of Nikita Zemlevskiy, Henry Froland, and Stephan Caspar

Quantum Uncertainty Framework Boosts Simulation Reliability

A newly developed framework enhances the predictive power of analog quantum simulations by systematically quantifying and minimizing uncertainties in theoretical approximations used to represent complex quantum many-body systems in Rydberg-atom quantum computers.

The two PSI physicists Andreas Läuchli (left) and Andreas Elben were involved in developing a new type of digital-analogue quantum simulator. Credit: © Paul Scherrer Institute PSI/Mahir Dzambegovic

Google’s Hybrid Digital-Analog Quantum Simulator Breaks New Ground

Researchers at Google and PSI have developed a revolutionary quantum simulator that combines digital precision with analog modeling capabilities, enabling unprecedented studies of complex physical phenomena through a versatile 69-qubit system that can both precisely control initial conditions and naturally simulate physical interactions, opening new possibilities in fields ranging from materials science to astrophysics.

A new technique helps verify the accuracy of experiments that probe the strange behavior of atomic-scale systems. (MIT)

Can you trust your quantum simulator?

At the scale of individual atoms, physics gets weird. Researchers are working to reveal, harness, and control these strange quantum effects using quantum analog simulators — laboratory experiments that involve super-cooling tens to hundreds of atoms and probing them with finely tuned lasers and magnets.

Quan­­tum simul­­ation: Measure­­ment of entan­­gle­­ment made easier

Quantum simulation: Measurement of entanglement made easier

Researchers have developed a method to make previously hardly accessible properties in quantum systems measurable. The new method for determining the quantum state in quantum simulators reduces the number of necessary measurements and makes work with quantum simulators much more efficient.

Performance advantage in quantum simulation

Performance advantage in quantum simulation

D-Wave Systems has published a milestone study in collaboration with scientists at Google, demonstrating a computational performance advantage, increasing with both simulation size and problem hardness, to over 3 million times that of corresponding classical methods.

Swiss Quantum Hub Logo

SwissQuantumPi: Introducing QCSimulator

The code for the QCSimulator package is also available at Github QCSimulator. QCSimulator is also on CRAN. Thanks to Tinniam. The first you have to do is to install the QCSimulator R Package. As it’s on […]