To learn more about the nature of matter, energy, space, and time, physicists smash high-energy particles together in large accelerator machines, creating sprays of millions of particles per second of a variety of masses and […]
Quantum 9, 1722 (2025). https://doi.org/10.22331/q-2025-04-24-1722 One significant advantage of superconducting processors is their extensive design flexibility, which encompasses various types of qubits and interactions. Given the large number of tunable parameters of a processor, the […]
Quantum 9, 1721 (2025). https://doi.org/10.22331/q-2025-04-24-1721 Motivated by the expectation that relativistic symmetries might acquire quantum features in Quantum Gravity, we take the first steps towards a theory of ”Doubly” Quantum Mechanics, a modification of Quantum […]
Quantum 9, 1720 (2025). https://doi.org/10.22331/q-2025-04-24-1720 This paper introduces the foliage partition, an easy-to-compute LC-invariant for graph states, of computational complexity $mathcal{O}(n^3)$ in the number of qubits. Inspired by the foliage of a graph, our invariant […]
Quantum 9, 1719 (2025). https://doi.org/10.22331/q-2025-04-24-1719 While in relativity theory space evolves over time into a single entity known as spacetime, quantum theory lacks a standard notion of how to encapsulate the dynamical evolution of a […]
Researchers have long recognized that quantum communication systems would transmit quantum information more faithfully and be impervious to certain forms of error if nonlinear optical processes were used. However, past efforts at incorporating such processes […]
Last week I visited Harvard and MIT, and as advertised in my last post, gave the Yip Lecture at Harvard on the subject “How Much Math Is Knowable?” The visit was hosted by Harvard’s wonderful […]
Insider Brief Researchers demonstrated secure quantum communication over 254 kilometers of existing telecom fiber using a coherence-based protocol, marking a milestone for practical quantum networks. The system maintained optical phase coherence without cryogenic cooling, using […]
Insider Brief IQM Quantum Computers will deliver Poland’s first superconducting quantum computer to Wrocław University of Science and Technology, with operations set to begin in the second quarter of this year. The 5-qubit IQM Spark […]
Insider Brief D-Wave and Davidson Technologies have completed the physical assembly of an Advantage2 annealing quantum computer in Huntsville, Alabama, marking the state’s first on-premises quantum system. The installation supports U.S. national defense objectives by […]
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