Category: Physics & Astronomy
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Superconducting Mølmer–Sørensen gate matches native gate performance
This research indicates that a hardware-efficient Mølmer–Sørensen gate can be implemented on superconducting quantum processors with performance competitive with the device’s native controlled-NOT gate.
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Quantum Brownian motion objectivity depends on timescale
This research indicates that objectivity in quantum Brownian motion with a finite number of environmental oscillators cannot be fully achieved and instead depends on timescales set by frequency relations.
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Near-ultraviolet blue spirals show outer-disk star formation
This research indicates that some optically red spiral galaxies that are blue in near-ultraviolet light still have star-forming outer disks, while near-ultraviolet-red spirals appear fully quenched.
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Two-dimensional gauge theories show rich phase structure
This research indicates that two-dimensional Abelian gauge theories and related chiral gauge theories can have a rich phase structure, including critical lines or points and a mechanism for symmetric mass generation.
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Redshift-space Minkowski tensors match simulations only partially
This research indicates that perturbative predictions for Minkowski tensors in redshift space are a qualified success, while nonperturbative Finger-of-God velocity dispersion remains important at relatively large scales.
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Next-to-leading power terms are significant in slepton pair production
This research indicates that next-to-leading power contributions in the threshold variable can be significant and that existing calculations may underestimate the scale error for large slepton masses.
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Crater-based navigation achieved metre-level lunar mapping accuracy
This research indicates that STELLA, an end-to-end crater-based navigation pipeline, can maintain metre-level position accuracy and sub-degree attitude accuracy on average for long-duration lunar mapping missions.
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Hardware-aware layout improves placement of qLDPC codes
This research indicates that hardware-aware placement and routing can generate many explicit quantum low-density parity-check code layouts on multilayer superconducting hardware, with topological codes losing periodic boundaries reducing hardware complexity and only moderately reducing logical efficiency.
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Mixed quantum states can be represented more efficiently
This research indicates that locally purified density operators can be made more efficient for representing depolarized maximally mixed quantum states by using truncation, gauge transformations, and analytical symmetry-based expressions.
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Dendritic magnetic domains form in Mn3NiN during phase transition
This research indicates that Mn3NiN develops a disordered dendritic domain structure on cooling through its ferrimagnetic to non-collinear antiferromagnetic phase transition, with domain roughness increasing and then saturating while domain area distribution stays largely unchanged.
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