HeyJaredQuantum Journal
Quantum Journal is a specialized academic publication dedicated to the advancement and dissemination of research in quantum science and related computational fields.
- Indexed articles, last 90 days
- 69
- Latest publication
- Sep 29, 2026
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- Earliest in this view
- Jul 8, 2026
Latest articles
Order Parameter Discovery for Quantum Many-Body Systems (opens the original)
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Quantum 10, 2217 (2026).https://doi.org/10.22331/q-2026-09-29-2217Quantum phase transitions reveal deep insights into the behavior of many-body quantum systems, but identifying these transitions without prior knowledge of order parameters remains a significant challenge. In this work, we introduce a method for constructing phase diagrams using the vector field of the reduced fidelity susceptibility (RFS), and demonstrate how information encoded in this vector field can be used to discover observ
Truncation uncertainties for accurate quantum simulations of lattice gauge theories (opens the original)
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Quantum 10, 2216 (2026).https://doi.org/10.22331/q-2026-09-24-2216The encoding of lattice gauge theories onto quantum computers requires a discretization of the gauge field's Hilbert space on each link, which presents errors with respect to the Kogut–Susskind limit. In the electric basis, Hilbert space fragmentation has recently been shown to limit the excitation of large electric fields. Here, we leverage this to develop a formalism for estimating the size of truncation errors in the electric b
Measuring a Quantum Measure Exceeding Unity (opens the original)
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Quantum 10, 2215 (2026).https://doi.org/10.22331/q-2026-09-24-2215The history based formalism known as Quantum Measure Theory (QMT) generalizes the concept of probability-measure so as to incorporate quantum interference. The resulting quantum measure $\mu$ is defined for arbitrary events (sets of histories), not just for observables at a fixed moment of time. Thanks to interference effects, $\mu$ can exceed unity, exhibiting its non-classical nature in a particularly striking manner. Here, in a
Non-stabilizerness and violations of CHSH inequalities (opens the original)
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Quantum 10, 2214 (2026).https://doi.org/10.22331/q-2026-09-21-2214We study quantitatively the interplay between entanglement and non-stabilizer resources in violating the CHSH inequalities. We show that, while non-stabilizer resources are necessary, they must have a specific structure, namely they need to be both asymmetric and (surprisingly) $\textit{local}$. We employ stabilizer entropy (SE) to quantify the non-stabilizer resources involved and the probability of violation given the resources.
Escaping the Shadow of Bell’s Theorem in Network Nonlocality (opens the original)
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Quantum 10, 2213 (2026).https://doi.org/10.22331/q-2026-09-21-2213The possibility of nonclassicality in networks unrelated to Bell’s original eponymous theorem has recently attracted significant interest. Here, we identify a sufficient condition for being “outside the shadow of Bell’s theorem” and introduce a testable criterion capable of certifying the novelty of instances of network-nonclassicality which we call minimal network nonclassicality. We provide examples of minimally network nonclass
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