In 1935, Albert Einstein and Erwin Schrödinger, two of the most prominent physicists of the day, got into a dispute over the nature of reality. Einstein had done the math and knew that the universe […]
Using laser light, researchers have developed the most robust method currently known to control individual qubits made of the chemical element barium. The ability to reliably control a qubit is an important achievement for realizing […]
Quantum computers, systems that perform computations by exploiting quantum mechanics phenomena, could help to efficiently tackle several complex tasks, including so-called combinatorial optimization problems. These are problems that entail identifying the optimal combination of variables […]
Research at Hokkaido University has revealed that elusive particles called neutrinos can interact with photons, the fundamental particles of light and other electromagnetic radiation, in ways not previously detected. The findings from Kenzo Ishikawa, Professor […]
Quantum 7, 1108 (2023). https://doi.org/10.22331/q-2023-09-11-1108 Efficient methods for the representation and simulation of quantum states and quantum operations are crucial for the optimization of quantum circuits. Decision diagrams (DDs), a well-studied data structure originally used […]
Quantum 7, 1107 (2023). https://doi.org/10.22331/q-2023-09-11-1107 Recently, quantum computing experiments have for the first time exceeded the capability of classical computers to perform certain computations – a milestone termed “quantum computational advantage.” However, verifying the output […]
Quantum 7, 1106 (2023). https://doi.org/10.22331/q-2023-09-11-1106 We introduce distance measures between quantum states, measurements, and channels based on their statistical distinguishability in generic experiments. Specifically, we analyze the average Total Variation Distance (TVD) between output statistics […]
Quantum 7, 1105 (2023). https://doi.org/10.22331/q-2023-09-11-1105 We study the problem of testing identity of a collection of unknown quantum states given sample access to this collection, each state appearing with some known probability. We show that […]
Insider Brief RIKEN Center for Quantum Computing researchers used machine learning to perform error correction for quantum computers. Because quantum computers are vulnerable to a range of environmental factors that alter their calculations, robust error […]
Insider Brief The Quantum Internet Alliance launches a challenge to encourage quantum enthusiasts shape the future of the quantum internet. The Challenge is to come up with an innovative idea for an application that utilizes […]
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