Category: Paper

Alexandra Ramôa and Luis Paulo Santos,

Quantum 9, 1856 (2025).

We present BAE, a problem-tailored and noise-aware Bayesian algorithm for quantum amplitude estimation. In a fault tolerant scenario, BAE is capable of saturating the Heisenberg limit; if de…

Dilip Paneru, Francesco Di Colandrea, Alessio D’Errico, and Ebrahim Karimi,

Quantum 9, 1855 (2025).

Highly correlated biphoton states are powerful resources in quantum optics, both for fundamental tests of the theory and practical applications. In particular, high-dimensional spatial corre…

Keith R. Fratus, Kirsten Bark, Nicolas Vogt, Juha Leppäkangas, Sebastian Zanker, Michael Marthaler, and Jan-Michael Reiner,

Quantum 9, 1854 (2025).

We consider the extent to which a Trotterized time evolution implemented on a quantum computer is altered by the presence of decoherence. Given a specific set of assumptions regarding the ma…

Bram Vancraeynest-De Cuiper and José Garre-Rubio,

Quantum 9, 1852 (2025).

We propose a systematic framework to construct a $(d+1)$-dimensional stabilizer model from an initial generic d-dimensional abelian symmetry. Our approach builds upon the iterative gauging pro…

Juan Ramón Muñoz de Nova and Fernando Sols,

Quantum 9, 1850 (2025).

We study simultaneous symmetry breaking in spontaneous Floquet states, focusing on the specific case of an atomic condensate. We first describe the quantization of the Nambu-Goldstone (NG) m…

Ali Fahimniya, Hossein Dehghani, Kishor Bharti, Sheryl Mathew, Alicia J. Kollár, Alexey V. Gorshkov, and Michael J. Gullans,

Quantum 9, 1849 (2025).

A central goal in quantum error correction is to reduce the overhead of fault-tolerant quantum computing by increasing noise thresholds and reducing the number of physical qubits required to…

Anthony M. Polloreno, Arnaud Carignan-Dugas, Jordan Hines, Robin Blume-Kohout, Kevin Young, and Timothy Proctor,

Quantum 9, 1848 (2025).

Randomized benchmarking (RB) protocols are widely used to measure an average error rate for a set of quantum logic gates. However, the standard version of RB is limited because it only bench…

Hela Mhiri, Leo Monbroussou, Mario Herrero-Gonzalez, Slimane Thabet, Elham Kashefi, and Jonas Landman,

Quantum 9, 1847 (2025).

In this work, we highlight an unforeseen behavior of the expressivity of Parameterized Quantum Circuits (PQCs) for machine learning. A large class of these models, seen as Fourier series who…

Sascha Heußen and Janine Hilder,

Quantum 9, 1846 (2025).

Code switching is an established technique that facilitates a universal set of FT quantum gate operations by combining two QEC codes with complementary sets of gates, which each by themselve…

Chaitanya Gupta and Anthony J. Short,

Quantum 9, 1845 (2025).

We consider introducing the Dirac sea in a quantum cellular automata model of fermions in discrete spacetime which approximates the Dirac equation in the continuum limit. However, if we atte…

Giuseppe Vitagliano, Otfried Gühne, and Géza Tóth,

Quantum 9, 1844 (2025).

Generalizing the well-known spin-squeezing inequalities, we study the relation between squeezing of collective $N$-particle $su(d)$ operators and many-body entanglement geometry in multi-particl…

Eric Brunner, Luuk Coopmans, Gabriel Matos, Matthias Rosenkranz, Frederic Sauvage, and Yuta Kikuchi,

Quantum 9, 1843 (2025).

Building upon recent progress in Lindblad engineering for quantum Gibbs state preparation algorithms, we propose a simplified protocol that is shown to be efficient under the eigenstate ther…