Papers
Analog-Digital Quantum Computing with Quantum Annealing Processors
Rahul Deshpande, Majid Kheirkhah, Chris Rich +12 more·Mar 16, 2026
Quantum annealing processors typically control qubits in unison, attenuating quantum fluctuations uniformly until the applied system Hamiltonian is diagonal in the computational basis. This simplifies control requirements, allowing annealing QPUs to ...
End-to-end performance of quantum-accelerated large-scale linear algebra workflows
Daiwei Zhu, Miguel Angel Lopez-Ruiz, François-Henry Rouet +5 more·Mar 16, 2026
Solving large-scale sparse linear systems is a challenging computational task due to the introduction of non-zero elements, or "fill-in." The Graph Partitioning Problem (GPP) arises naturally when minimizing fill-in and accelerating solvers. In this ...
Error semitransparent universal control of a bosonic logical qubit
Saswata Roy, Owen C. Wetherbee, Valla Fatemi·Mar 16, 2026
Bosonic codes offer hardware-efficient approaches to logical qubit construction and hosted the first demonstration of beyond-break even logical quantum memory. However, such accomplishments were done for idling information, and realization of fault-t...
GPU-Accelerated Quantum Simulation of Stabilizer Circuits
Muhammad Osama, Dimitrios Thanos, Alfons Laarman·Mar 15, 2026
We introduce new parallel algorithms for efficiently simulating stabilizer (Clifford) circuits on GPUs, with a focus on data-parallel tableau evolution and scalable handling of projective measurements. Our approach reformulates key bottlenecks in sta...
IQP Born Machines under Data-dependent and Agnostic Initialization Strategies
Sacha Lerch, Joseph Bowles, Ricard Puig +3 more·Mar 15, 2026
Quantum circuit Born machines based on instantaneous quantum polynomial-time (IQP) circuits are natural candidates for quantum generative modeling, both because of their probabilistic structure and because IQP sampling is provably classically hard in...
Reversible Lifetime Semantics for Quantum Programs
Simone Faro, Francesco Pio Marino, Gabriele Messina·Mar 15, 2026
Reversible computation requires that intermediate data be explicitly undone rather than discarded. In quantum programming, this principle appears as uncomputation, usually treated as a technical cleanup mechanism. We instead present uncomputation as ...
Quantum Enhanced Pauli Propagation
S. Majumder, J. R. Garrison, L. Luo +8 more·Mar 15, 2026
Accurately estimating observables on noisy quantum devices remains a central challenge for near-term quantum algorithms. While quantum error mitigation techniques can reduce noise-induced bias, they often rely on unverifiable assumptions about the ci...
Analysis of Hydrogen Contamination in Al/AlOx/Al Josephson Junctions
Yu Zhu, Aldilene Saraiva-Souza, Félix Beaudoin +1 more·Mar 14, 2026
Hydrogen contamination in Josephson junctions is a potential source of device-to-device variability and two-level-system loss in superconducting qubits. In this work, we investigate hydrogen incorporation in oxidized aluminum barriers by combining mo...
Finite-Time Braiding Dynamics within Topological Nanowire Qubits
Adrian D. Scheppe, Michael V. Pak·Mar 14, 2026
Topological Quantum Computing has largely evolved towards a paradigm of manipulating edge localized Majorana within $p$-wave topological superconducting nanowires. To bridge the gap between physical qubit systems and quantum algorithms, we perform a ...
Revisited Quantification of the Resource Theory of Imaginarity
Yue Han, Naihong Hu·Mar 14, 2026
In this paper, we investigate the decay behaviors of three imaginarity-related metrics, specifically the $l_1$-norm-based imaginarity measure, imaginarity robustness, and imaginarity relative entropy, for arbitrary single-qubit pure initial states un...
Readout-induced degradation of transmon lifetimes: interplay of TLSs and qubit spectral reshaping
Ziwen Huang, Jimmy Shih-Chun Hung, Mouktik Raha +9 more·Mar 14, 2026
Measurement backaction degrades dispersive readout of superconducting qubits even at modest drive strengths, often via the reduction of qubit lifetimes during readout. In this work, we theoretically and experimentally study this degradation and show ...
Millimeter Wave Readout of a Superconducting Qubit
Akash V. Dixit, Zachary L. Parrott, Dennis Chunikhin +3 more·Mar 14, 2026
Millimeter waves are emerging as an enabling technology for connecting and enhancing different quantum platforms such as Rydberg atoms, optomechanics, and superconducting qubits. In this work, we focus on the interaction between millimeter wave photo...
Phononic Bragg Reflectors for Thermal Insulation of Scalable Cryogenic Control Electronics from Qubits
Isabelle V. Sprave, Denny Dütz, Sebastian Kock +5 more·Mar 14, 2026
Scaling solid-state architectures to the millions of qubits required for utility-scale quantum computing could benefit from the integration of control electronics in the immediate vicinity of the quantum layer. However, lithographically fabricated so...
Quantum dial
Aashish Sah, Suman Kundu, Priyank Singh +3 more·Mar 13, 2026
Accurate control of quantum degrees of freedom is promising for sensing, communication, and computing, but building a useful quantum computer faces a central isolation-and-control challenge: qubits must remain well isolated from their environment to ...
Bit-Vector Abstractions to Formally Verify Quantum Error Detection & Entanglement
Arun Govindankutty·Mar 13, 2026
As the number of qubits increases, quantum circuits become more complex and their state space grows rapidly. This makes functional verification challenging for conventional techniques. Ensuring correctness is especially critical for quantum error cor...
Active Sampling Sample-based Quantum Diagonalization from Finite-Shot Measurements
Rinka Miura·Mar 13, 2026
Near-term quantum devices provide only finite-shot measurements and prepare imperfect, contaminated states. This motivates algorithms that convert samples into reliable low-energy estimates without full tomography or exhaustive measurements. We propo...
Spin qubit gates via phonon buses in electron nanowires
Dylan Lewis, Roopayan Ghosh, Sanjeev Kumar +4 more·Mar 13, 2026
Scalable architectures for quantum computing using semiconductor quantum dots require interactions between qubits beyond adjacent quantum dots. Here, we propose using nanowires of electrons to mediate the interaction between two quantum dots. Virtual...
Agnostic Dynamical Decoupling for Single-Qubit Gates
Gumaro Rendon·Mar 13, 2026
We introduce a method for designing smooth single-qubit control pulses that implement a desired gate while suppressing the effect of unknown static error sources to first order. Unlike dynamically corrected gate constructions that require prior knowl...
Quantifying surface losses in superconducting aluminum microwave resonators
Elizabeth Hedrick, Faranak Bahrami, Alexander C. Pakpour-Tabrizi +11 more·Mar 13, 2026
The recent realization of millisecond-scale coherence with tantalum-on-silicon transmon qubits showed that depositing the Al/AlOx/Al Josephson junction in a high purity, ultrahigh vacuum environment was critical for achieving lifetime-limited coheren...
Beta Tantalum Transmon Qubits with Quality Factors Approaching 10 Million
Atharv Joshi, Apoorv Jindal, Paal H. Prestegaard +9 more·Mar 13, 2026
Tantalum-based transmon qubits are a promising platform for building large-scale quantum processors. So far, these qubits have been made from tantalum films grown exclusively in the alpha phase (α-Ta). The beta phase of tantalum (\{beta}-Ta) readily ...