A selection of the most important recent news and articles about #quantumcomputing.
(Thursday, May 09, 2024) “The characterization of a quantum device is a crucial step in the development of quantum experiments. This is accomplished via Quantum Process Tomography, which combines the outcomes of different projective measurements to deliver a possible reconstruction of the underlying process. The tomography is typically performed by processing an overcomplete set of measurements and extracting the process matrix from maximum-likelihood estimation. Here, we introduce Fourier Quantum Process Tomography, a technique which requires a reduced number of measurements, and benchmark its performance against the standard maximum-likelihood approach. Fourier Quantum Process Tomography is based on measuring probability distributions in two conjugate spaces for different state preparations and projections. Exploiting the concept of phase retrieval, our scheme achieves a complete and robust characterization of the setup by processing a near-minimal set of measurements. We experimentally test the technique on different space-dependent polarization transformations, reporting average fidelities higher than 90
(Sunday, May 12, 2024) “Building a useful quantum computer in practice is incredibly challenging. Significant improvements are needed in the scale, fidelity, speed, reliability, and programmability of quantum computers to…”
(Thursday, July 11, 2024) “/PRNewswire/ — Kipu Quantum, the worldwide leading quantum software company, announced today the strategic acquisition of PlanQK, the German quantum computing…”
“Scalable techniques for quantum simulations of high-energy physics.”
“Learn which quantum computing companies have recently replaced their CEOs & reasons Boards of Directors make such changes.”
“PARIS, July 10, 2024 — French electric utility company EDF, in collaboration with quantum computing firms Quandela and Alice & Bob, and the French National Centre for Scientific Research (CNRS), has […]”
“Learn about a study in France that will look at the energy efficiency of quantum computing systems versus HPC for well-known algorithms.”
“Oxford Ionics has demonstrated the highest performing quantum chip in the world, which can be produced at scale in a standard semiconductor fabrication plant.”
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