Papers

Henry Zhang, Joseph Li·Jan 15, 2026

The quantum Fourier transform and quantum wavelet transform have been cornerstones of quantum information processing. However, for non-stationary signals and anomaly detection, the Hilbert transform can be a more powerful tool, yet no prior work has ...

C. A. Downing, M. S. Ukhtary·Jan 15, 2026

We reconsider the quantum energetics and quantum thermodynamics of the charging process of a simple, two-component quantum battery model made up of a charger qubit and a single--cell battery qubit. We allow for the initial quantum state of the charge...

Kin On Ho, Cassandra Dailledouze, Martin Schmidt +3 more·Jan 15, 2026

The spatial distribution of a magnetic field can be determined with micrometer resolution using widefield nitrogen vacancy (NV) center magnetic imaging. Nevertheless, reconstructing the magnetic field from the raw data can be challenging due to the d...

Srivathsan Poyyapakkam Sundar, Vibin Abraham, Bo Peng +1 more·Jan 15, 2026

Progress towards quantum utility in chemistry requires not only algorithmic advances, but also the identification of chemically meaningful problems whose electronic structure fundamentally challenges classical methods. Here, we introduce a curated hi...

Shane Dooley·Jan 15, 2026

Quantum many-body scars (QMBS) have attracted considerable interest due to their role in weak ergodicity breaking in many-body systems. We present a general construction that embeds stabilizer states as QMBS of local Hamiltonians. The method relies o...

Alberto Coppi, Ema Puljak, Lorenzo Borella +6 more·Jan 15, 2026

We present a systematic study of Tensor Network (TN) models $\unicode{x2013}$ Matrix Product States (MPS) and Tree Tensor Networks (TTN) $\unicode{x2013}$ for real-time jet tagging in high-energy physics, with a focus on low-latency deployment on Fie...

Amir-Reza Negari, Subhayan Sahu, Jan Behrends +2 more·Jan 15, 2026

We demonstrate the existence of an extended non-equilibrium critical phase, characterized by sub-exponential decay of conditional mutual information (CMI), in the surface code subject to heralded random Pauli measurement channels. By mapping the resu...

Peter Shanahan, Diego Ruiz·Jan 15, 2026

Biased-noise qubits, in which one type of error (e.g. $X$- and $Y$-type errors) is significantly suppressed relative to the other (e.g. $Z$-type errors), can significantly reduce the overhead of quantum error correction. Codes such as the rectangular...

Florian Meier, Yuri Minoguchi, Gianmichele Blasi +2 more·Jan 15, 2026

Creating precise timing devices at ultra-short time scales is not just an important technological challenge, but confronts us with foundational questions about timekeeping's ultimate precision limits. Research on clocks has either focused on long-ter...

Bruno Costa Alves Freire, François-Marie Le Régent, Anthony Leverrier·Jan 15, 2026

We introduce a quantum Maxwell erasure decoder for CSS quantum low-density parity-check (qLDPC) codes that extends peeling with bounded guessing. Guesses are tracked symbolically and can be eliminated by restrictive checks, giving a tunable tradeoff ...

Samuel E. Begg, Bishal K. Ghosh, Chong Zu +2 more·Jan 15, 2026

While spin squeezing has been traditionally considered in all-to-all interacting models, recent works have shown that it can also occur in systems with power-law interactions, enabling direct tests in Rydberg atoms, trapped ions, ultracold atoms, and...

Cesare Tronci·Jan 15, 2026

We exploit the variational and Hamiltonian structures of quantum hydrodynamics with spin to unfold the correlation and torque mechanisms accompanying spin-orbit coupling (SOC) in electronic motion. Using Hamilton's action principle for the Pauli equa...

Malvika Raj Joshi, Francisca Vasconcelos·Jan 15, 2026

Dicke states serve as a critical resource in quantum metrology, communication, and computation. However, unitary preparation of Dicke states is limited to logarithmic depth in standard circuit models and existing constant-depth protocols require meas...

Daniel Allepuz-Requena, Zohran Ali, Dennis Høj +4 more·Jan 15, 2026

Coupling mechanical motion to an optical resonator enables displacement measurements approaching the standard quantum limit (SQL). However, increasing the optomechanical coupling strength will inevitably lead to probing of the nonlinear response of t...

Kean Chen, Zhicheng Zhang, Nengkun Yu·Jan 15, 2026

Consider quantum channels with input dimension $d_1$, output dimension $d_2$ and Kraus rank at most $r$. Any such channel must satisfy the constraint $rd_2\geq d_1$, and the parameter regime $rd_2=d_1$ is called the boundary regime. In this paper, we...

Lei Hu, Mohamed Nomeir, Alptug Aytekin +1 more·Jan 15, 2026

This work investigates the use of quantum resources in distributed storage systems. Consider an $(n,k,d)$ distributed storage system in which a file is stored across $n$ nodes such that any $k$ nodes suffice to reconstruct the file. When a node fails...

Carlo Cafaro, James Schneeloch·Jan 15, 2026

In optimal quantum-mechanical evolutions, motion can take place along paths of minimal length within an optimal time frame. Alternatively, optimal evolutions may occur along established paths without any waste of energy resources and achieving 100% s...

Carlo Cafaro, James Schneeloch·Jan 15, 2026

We examine the pertinent geometric characteristics of entanglement that arise from stationary Hamiltonian evolutions transitioning from separable to maximally entangled two-qubit quantum states. From a geometric perspective, each evolution is charact...

Georgios Theologou, Mikkel F. Andersen, Sandro Wimberger·Jan 15, 2026

The Landau--Zener (LZ) model describes a two-level quantum system that undergoes an avoided crossing. In the adiabatic limit, the transition probability vanishes. An auxiliary control field $H_\text{CD}$ can be reverse-engineered so that the full Ham...

Carlo Cafaro, James Schneeloch·Jan 15, 2026

It is known that the continuous-time variant of Grover's search algorithm is characterized by quantum search frameworks that are governed by stationary Hamiltonians, which result in search trajectories confined to the two-dimensional subspace of the ...