A month ago William Inboden, the provost of UT Austin (where I work), invited me to join a university-wide “Faculty Working Group on Academic Integrity.” The name made me think that it would be about […]
For obvious reasons, we do not know what the inside of a black hole looks like. But thanks to theoretical physics, we can ask what the inside should look like if Einstein’s theory of gravity […]
Quantum 9, 1908 (2025). https://doi.org/10.22331/q-2025-11-06-1908 We show that all reduced states of nonproduct symmetric Dicke states of arbitrary number of qudits are genuinely multipartite entangled, and of nonpositive partial transpose with respect to any subsystem. […]
A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By rethinking gravity and cosmic timelines, it could rewrite our understanding of space and […]
Quantum 9, 1907 (2025). https://doi.org/10.22331/q-2025-11-06-1907 We give a pair of algorithms that efficiently learn a quantum state prepared by Clifford gates and $O(log n)$ non-Clifford gates. Specifically, for an $n$-qubit state $|psirangle$ prepared with at […]
Quantum 9, 1906 (2025). https://doi.org/10.22331/q-2025-11-06-1906 We present Noise-Directed Adaptive Remapping (NDAR), a heuristic algorithm for approximately solving binary optimization problems by leveraging certain types of noise. We consider access to a noisy quantum processor with […]
Quantum 9, 1905 (2025). https://doi.org/10.22331/q-2025-11-06-1905 Quantum error-correcting codes, such as subspace, subsystem, and Floquet codes, are typically constructed within the stabilizer formalism, which does not fully capture the idea of fault tolerance needed for practical […]
Quantum 9, 1904 (2025). https://doi.org/10.22331/q-2025-11-06-1904 Relaxing the postulates of an axiomatic theory is a natural way to find more general theories, and historically, the discovery of non-Euclidean geometry is a famous example of this procedure. […]
Quantum 9, 1903 (2025). https://doi.org/10.22331/q-2025-11-06-1903 The Quantum Approximate Optimisation Algorithm (QAOA) is a widely studied quantum-classical iterative heuristic for combinatorial optimisation. While QAOA targets problems in complexity class NP, the classical optimisation procedure required in […]
Alice & Bob, a quantum computing company, and the Science and Technology Facilities Council’s (STFC) Hartree Centre have announced a collaboration to integrate Alice & Bob’s future QPUs with high-performance computing (HPC) environments via SLURM. […]
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