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Nonclassical nullifiers for quantum hypergraph states
8+ hour, 32+ min ago (345+ words) Abhijith Ravikumar, Darren W. Moore, and Radim Filip Department of Optics, Palack" University, 17. listopadu 1192/12, 779 00 Olomouc, Czech Republic [20] Vojt'ch Kala, Casper A. Breum, Mikkel V. Larsen, Ulrik L. Andersen, Jonas S. Neergaard-Nielsen, Radim Filip, and Petr Marek. ``Nullifiers of non-gaussian cluster states through homodyne measurement'' (2025). ar…...
On the structure of higher order quantum maps
8+ hour, 32+ min ago (315+ words) Quantum 10, 2090 (2026). https: //doi. org/10. 22331/q-2026-05-05-2090 We study higher order quantum maps in the context of a *-autonomous category of affine subspaces. We show that types of higher order maps can be identified with certain Boolean functions that we call type functions....
Trans-dimensional Hamiltonian model selection and parameter estimation from sparse, noisy data
3+ week, 6+ day ago (468+ words) Abigail N. Poteshman1, 2, Jiwon Yun3, Tim H. Taminiau3, 4, and Giulia Galli2, 5, 6 Featured image: Schematic of inputs and outputs to a hybrid MCMC algorithm [2] Lila VH Rodgers, Lillian B Hughes, Mouzhe Xie, Peter C Maurer, Shimon Kolkowitz, Ania C Bleszynski Jayich, and Nathalie P de Leon. Materials…...
The geometry of the Hermitian matrix space and the Schrieffer'Wolff transformation
1+ mon, 1+ week ago (276+ words) Gergo Pinter1, 2, Gyorgy Frank1, Daniel Varjas1, 3, 4, and Andras Palyi1, 2 Featured image: A local coordinate system (chart) defined by the Schrieffer-Wolff transformation in the space of Hermitian matrices near a submanifold of matrices with degenerate spectra (orange). [2] J. M. Luttingerand W. Kohn ``Motion of Electrons and Holes in…...
Circuit locality from relativistic locality in scalar field mediated entanglement
1+ mon, 1+ week ago (207+ words) [9] Edward Witten. ``Why Does Quantum Field Theory In Curved Spacetime Make Sense? And What Happens To The Algebra of Observables In The Thermodynamic Limit?'' (2022). ar Xiv: 2112. 11614. ar Xiv: 2112. 11614 [10] Tein van der Lugt. ``Causally faithful circuits for relativistic realisability, or: What can you…...
Two-particle scattering on general graphs
1+ mon, 1+ week ago (226+ words) Quantum 10, 2038 (2026). https: //doi. org/10. 22331/q-2026-03-23-2038 Quantum walks in general graphs, or more specifically scattering on graphs, encompass enough complexity to perform universal quantum computation. Any given quantum circuit can be broken down into single- and two-qubit gates, which can then be…...
Arbitrary Polynomial Separations in Trainable Quantum Machine Learning
3+ mon, 2+ week ago (1548+ words) Eric R. Anschuetz1, 2, 3 and Xun Gao4 1 Institute for Quantum Information and Matter, Caltech, Pasadena, CA, USA2 Walter Burke Institute for Theoretical Physics, Caltech, Pasadena, CA, USA3 MIT Center for Theoretical Physics, Cambridge, MA, USA4 JILA and Department of Physics, CU Boulder, Boulder, CO, USA Featured image:…...
A decompositional framework for process theories in spacetime
3+ mon, 4+ week ago (147+ words) Matthias Salzger1 and John H. Selby1, 2 Featured image: The range of inequivalent decompositional structure for processes with two inputs and two outputs [37] John H Selby, Maria E Stasinou, Matt Wilson, and Bob Coecke, ar Xiv: 2502. 10368. ar Xiv: 2502. 10368 [46] Hong Hao Fu, University of Maryland, College Park,…...