Quantum 7, 968 (2023). https://doi.org/10.22331/q-2023-03-30-968 We compare the proposals that have appeared in the literature to describe a measurement of the time of arrival of a quantum particle at a detector. We show that there […]
Quantum 7, 967 (2023). https://doi.org/10.22331/q-2023-03-30-967 We present a family of electron-based coupled-wire models of bosonic orbifold topological phases, referred to as twist liquids, in two spatial dimensions. All local fermion degrees of freedom are gapped […]
China is forming an alliance on its quantum computing patent portfolio, according to reports from Asian media. A group of Chinese-based organizations created the Intellectual Property (IP) Alliance for Quantum Computing Industry and its affiliated […]
Quantum 7, 966 (2023). https://doi.org/10.22331/q-2023-03-30-966 We study variational quantum algorithms from the perspective of free fermions. By deriving the explicit structure of the associated Lie algebras, we show that the Quantum Approximate Optimization Algorithm (QAOA) […]
Insider Brief Quantum Computing Inc completes integration of QPhoton merger, more than doubling the size of the company and establishing its quantum hardware production capability. Quantum Computing Inc. begins prototype fabrication of its own quantum […]
Quantum 7, 965 (2023). https://doi.org/10.22331/q-2023-03-30-965 Thanks to common-mode noise rejection, differential configurations are crucial for realistic applications of phase and frequency estimation with atom interferometers. Currently, differential protocols with uncorrelated particles and mode-separable settings reach […]
Quantum 7, 964 (2023). https://doi.org/10.22331/q-2023-03-30-964 We develop and analyze a method for simulating quantum circuits on classical computers by representing quantum states as rooted tree tensor networks. Our algorithm first determines a suitable, fixed tree […]
There’s now an open letter arguing that the world should impose a six-month moratorium on the further scaling of AI models such as GPT, by government fiat if necessary, to give AI safety and interpretability […]
Diagram of QuSecure/Accenture PQC Satellite Communications Configuration QuSecure and Accenture have demonstrated a space-based quantum-resistant post-quantum cryptography (PQC) using a network of both Low-Earth Orbit (LEO) and Geosynchronous Equatorial Orbit (GEO) satellites using QuSecure’s QuProtect […]
What does quantum mechanics, the most successful theory ever proposed by physics, teach us about reality? The starting point for most philosophers of physics is that quantum mechanics must somehow provide a description of the […]
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