Quantum 6, 659 (2022). https://doi.org/10.22331/q-2022-02-21-659 Spekkens has introduced an $textit{epistemically restricted classical theory}$ of discrete systems, based on discrete phase space. The theory manifests a number of quantum-like properties but cannot fully imitate quantum theory […]
Quantum 6, 658 (2022). https://doi.org/10.22331/q-2022-02-21-658 We consider online strategies for discriminating between symmetric pure states with zero error when $n$ copies of the states are provided. Optimized online strategies involve local, possibly adaptive measurements on […]
Quantum 6, 657 (2022). https://doi.org/10.22331/q-2022-02-21-657 We propose a method to reliably and efficiently extract the fidelity of many-qubit quantum circuits composed of continuously parametrized two-qubit gates called matchgates. This method, which we call $textit{matchgate benchmarking}$, […]
Quantum 6, 656 (2022). https://doi.org/10.22331/q-2022-02-21-656 In this work, we characterize the amount of steerability present in quantum theory by connecting the maximal violation of a steering inequality to an inclusion problem of free spectrahedra. In […]
Although much of the discussion regarding the threat of quantum computers to break the RSA encryption algorithm and allow a hacker to decrypt data in transit, there is another potential problem where a quantum computer […]
PRESS RELEASE — Singapore’s Quantum Engineering Programme (QEP) will start conducting nationwide trials of quantum-safe communication technologies that promise robust network security for critical infrastructure and companies handling sensitive data. Supported by the National Research […]
An international team of scientists led by Xanadu’s research team will present a blueprint to a scalable, fault-tolerant photonic quantum computer at the APS March Meeting on March 14. The team suggests this new architecture […]
Our projection is that the vast majority of quantum computing usage, at least for the rest of this decade, will be through cloud-based quantum computers located at an external vendor’s remote site rather than through […]
Blockchain Application Test Configuration. Credit: JPMorgan Chase, Toshiba, and Ciena A research team from JP Morgan Chase, Toshiba, and Ciena have demonstrated a quantum protected blockchain application over a 70 kilometer fiber optic cable. The […]
Einstein’s theory of general relativity holds that a massive body like Earth curves space-time, causing time to slow as you approach the object—so a person on top of a mountain ages a tiny bit faster […]
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