Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Disorder enhanced transport as a general feature of long-range hopping models
Elisa Zanardini, Giuseppe Luca Celardo, Nahum C. Chávez +1 more·Jan 12, 2026
We analyze the interplay of disorder and long-range hopping in a paradigmatic one dimensional model of quantum transport. While typically the current is expected to decrease as the disorder strength increases due to localization effects, in systems w...
Phase transition, phase separation and mode softening of a two-component Bose-Einstein condensate in an optical cavity
Jia-Ying Lin, Wei Qin, Renyuan Liao·Jan 12, 2026
We investigate the superradiant phase transition in a two-component Bose-Einstein condensate with distinct atomic detunings, confined in an optical cavity and driven by a transverse pump laser. By combining perturbation theory and numerical simulatio...
TrackHHL: The 1-Bit Quantum Filter for particle trajectory reconstruction
Xenofon Chiotopoulos, Davide Nicotra, George Scriven +5 more·Jan 12, 2026
The transition to the High-Luminosity Large Hadron Collider (HL-LHC) presents a computational challenge where particle reconstruction complexity may outpace classical computing resources. While quantum computing offers potential speedups, standard al...
Explicit complex time integrators for stiff problems
Jithin D. George, Julian Koellermeier, Samuel Y. Jung +1 more·Jan 12, 2026
Most numerical methods for time integration use real-valued time steps. Complex time steps, however, can provide an additional degree of freedom, as we can select the magnitude of the time step in both the real and imaginary directions. We show that ...
Assembly to Quantum Compiler
Andrew Haverly, Shahram Rahimi, Mark A. Novotny·Jan 12, 2026
This research presents a novel approach in quantum computing by transforming ARM assembly instructions for use in quantum algorithms. The core achievement is the development of a method to directly map the ARM assembly language, a staple in classical...
Hong-Ou-Mandel two-photon x-ray states
Liam Powers, Stephen Durbin·Jan 12, 2026
We have observed Hong-Ou-Mandel interference of high-brightness synchrotron x-rays with a Mach-Zehnder interferometer, yielding two-photon states of potential interest for x-ray quantum optics.
Finite-Memory Extension of Tegmark's Decoherence Bound in Biological Media
Ramandeep Dewan·Jan 12, 2026
Tegmark's decoherence bound is derived under the assumption of a strictly memoryless environment. We show that this result corresponds to the singular limit of a finite-memory theory. For exponentially correlated environments decoherence is generical...
A unified framework for Bell inequalities from continuous-variable contextuality
Carlos Ernesto Lopetegui-González, Gaël Massé, Enky Oudot +6 more·Jan 12, 2026
Although the original EPR paradox was formulated in terms of position and momentum, most studies of these phenomena have focused on measurement scenarios with only a discrete number of possible measurement outcomes. Here, we present a framework for s...
Quantum information and statistical complexity of hydrogen-like ions in Dunkl-Schrödinger system
Akash Halder, Amlan K. Roy, Debraj Nath·Jan 12, 2026
In this work, we present analytical solutions of Schrödinger equation for Coulomb potential in presence of a Dunkl reflection operator. Expressions are offered for eigenvalues, eigenfunctions and radial densities for H-isoelectronic series (Z=1-3). T...
Bright Source of High-Dimensional Temporal Entanglement
Dorian Schiffer, Robert Kindler, Alexandra Bergmayr-Mann +5 more·Jan 12, 2026
High-dimensional entanglement is considered to hold great potential for quantum key distribution (QKD) in high-loss and -noise scenarios. To harness its robustness, we construct a source for high-dimensional time-bin entangled photons optimized for h...
On the Lifshitz formula of dispersion interaction
Michael V. Davidovich·Jan 12, 2026
The Lifshitz formula and methods of its preparation in the literature are considered. It is shown that in Lifshitz's work itself, this formula is given without a consistent conclusion. Moreover, the approach to the conclusion proposed in this work do...
From coherent to fermionized microwave photons in a superconducting transmission line
Alberto Tabarelli de Fatis, Stephanie Matern, Gianluca Rastelli +1 more·Jan 12, 2026
We investigate superconducting transmission lines as a novel platform for realizing a quantum fluid of microwave photons in a propagating geometry. We predict that the strong photon-photon interactions provided by the intrinsic nonlinearity of Joseph...
A directly observable, Zeeman-insensitive nuclear spin coherence in solution
James Eills, Anushka Singh, Amir-Mahyar Teimoori +3 more·Jan 12, 2026
Clock transitions are well known in atomic and solid-state systems, but are largely unexplored in molecular liquids. Here we demonstrate a clock-like, nuclear-spin avoided crossing in [1--$^{13}$C]-fumarate that supports long-lived and directly obser...
Quasi-optimal quantum Markov chain spectral gap estimation
Adam Connolly, Steven Herbert, Julien Sorci·Jan 12, 2026
This paper proposes a quantum algorithm for Markov chain spectral gap estimation that is quasi-optimal (i.e., optimal up to a polylogarithmic factor) in the number of vertices for all parameters, and additionally quasi-optimal in the reciprocal of th...
Anisotropic anomalous Hall effect in distorted kagome GdTi3Bi4
Avdhesh K. Sharma, Bo Tai, Subhajit Roychowdhury +5 more·Jan 12, 2026
Topological kagome magnets offer a rich landscape for exploring the intricate interplay of quantum interactions among geometry, topology, spin, and correlation. GdTi3Bi4 crystallizes in layered Ti based kagome nets intertwined with zigzag Gd chains a...
Excitation spectrum of a bright solitary wave in a Bose-Einstein condensate and its connection with the Higgs and the Goldstone modes
G. M. Kavoulakis·Jan 12, 2026
We consider the problem of Bose-Einstein condensed atoms, which are confined in a (quasi) one-dimensional toroidal potential. We focus on the case of an effective attractive interaction between the atoms. The formation of a localized blob (i.e., a ``...
Coupling a discrete state to a quasi-continuum: A model quantum mechanical system that interpolates between Rabi oscillations and decay-revival dynamics
Enes Kutay İşgörür, Osman Cevheroğlu, Arkadaş Özakın·Jan 12, 2026
We formulate a quantum mechanical system consisting of a single discrete state coupled to an infinite ladder of equally-spaced states, the coupling between the two being given by a Lorentzian profile. Various limits of this system correspond to well-...
Hardware-Economic Manipulation of Dual-Type ${}^{171}$Yb$^+$ Qubits
Y. -J. Yi, Y. -Y. Chen, Y. -H. Hou +10 more·Jan 12, 2026
The dual-type qubit scheme is an emerging method to suppress crosstalk errors in scalable trapped-ion quantum computation and quantum network. Here we report a hardware-economic way to control dual-type $^{171}\mathrm{Yb}^+$ qubits using a single $35...
Thermodynamic Recycling of Algorithmic Failure Branches: Quantum-Computer Demonstration with Quantum Error Correction
Nobumasa Ishida, Yoshihiko Hasegawa·Jan 12, 2026
Thermodynamic trade-off relations dictate fundamental limits on the performance of thermodynamic tasks through costs such as heat dissipation. Here, we propose a framework called thermodynamic recycling to circumvent these limits in quantum processor...
Einstein's Worries and Actual Physics: Beyond Pilot Waves
Partha Ghose·Jan 12, 2026
Tim Maudlin has argued that the standard formulation of quantum mechanics fails to provide a clear ontology and dynamics and that the de Broglie--Bohm pilot-wave theory offers a better completion of the formalism, more in line with Einstein's concern...