Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Robust composite two-qubit gates for silicon-based spin qubits
Yang-Yang Yu, Guang-Hui Zhang, Yan-Jie He +3 more·Mar 5, 2026
We propose a universal approach based on Hamiltonian inverse engineering to realize a set of parameterized two-qubit gates. This method possesses unique advantages to simultaneous control of transitions among four energy levels, providing a simpler a...
Fault-tolerant execution of error-corrected quantum algorithms
Michael A. Perlin, Zichang He, Anthony Alexiades Armenakas +9 more·Mar 4, 2026
Scaling up quantum algorithms to tackle high-impact problems in science and industry requires quantum error correction and fault tolerance. While progress has been made in experimentally realizing error-corrected primitives, the end-to-end execution ...
Universal Hamiltonian control in a planar trimon circuit
Vivek Maurya, Daria Kowsari, Kumar Saurav +4 more·Mar 4, 2026
Multimode circuits provide an avenue for flexible control of single and multi-qubit gates. In this work we implement a multimode circuit known as a trimon integrated in a planar geometry. The trimon features three transmon-like modes with strong all-...
Demonstrating Noise-adapted Quantum Error Correction With Break-Even Performance
Vismay Joshi, Anubhab Rudra, Sourav Dutta +2 more·Mar 4, 2026
The promise of quantum computing is closer to reality today than ever before, thanks to rapid progress in the development of quantum hardware. Even as qubit lifetimes and gate fidelities continue to improve, realizing robust, fault-tolerant quantum c...
Transversal AND in Quantum Codes
Christine Li, Lia Yeh·Mar 4, 2026
The AND gate is not reversible$\unicode{x2014}$on qubits. However, it is reversible on qutrits, making it a building block for efficient simulation of qubit computation using qutrits. We first observe that there are multiple two-qutrit Clifford+T uni...
Towards Predictive Quantum Algorithmic Performance: Modeling Time-Correlated Noise at Scale
Amit Jamadagni, Gregory Quiroz, Eugene Dumitrescu·Mar 4, 2026
Combining tensor network techniques with quantum autoregressive moving average models, we quantify the effects of time-correlated noise on quantum algorithms and predict their performance at scale. As a paradigmatic test case, we examine the quantum ...
Quantum State Certification via Effective Parent Hamiltonians from Local Measurement Data
Guy-Philippe Nadon, Guanyi Heng, Pacôme Gasnier +8 more·Mar 4, 2026
The preparation and certification of quantum states is a fundamental challenge across quantum information technology. We introduce a tomography-free state certification method that lower-bounds the fidelity by estimating expectation values of enginee...
HyQBench: A Benchmark Suite for Hybrid CV-DV Quantum Computing
Shubdeep Mohapatra, Yuan Liu, Eddy Z. Zhang +1 more·Mar 4, 2026
Hybrid continuous-variable (CV)-discrete-variable (DV) quantum systems present a promising direction for quantum computing by combining the high dimensional encoding capabilities of qumodes with the control offered by DV qubits on the coupled qumodes...
Magic state distillation with permutation-invariant codes and a two-qubit example
Heather Leitch, Yingkai Ouyang·Mar 4, 2026
Magic states, by allowing non-Clifford gates through gate teleportation, are important building blocks of fault-tolerant quantum computation. Magic state distillation protocols aim to create clean copies of magic states from many noisier copies. Howe...
Modeling Energy Relaxation via Quantum Thermalization: A Superconducting Qubit Coupled to a Many-Body TLS System
Xue-Yi Guo·Mar 4, 2026
While two-level systems (TLS) in superconducting qubits are known to introduce phonon-mediated energy dissipation channels, many-body TLS systems themselves can also act as a distinct dissipation channel whose effect on qubit energy relaxation remain...
Minimum Weight Decoding in the Colour Code is NP-hard
Mark Walters, Mark L. Turner·Mar 4, 2026
All utility-scale quantum computers will require some form of Quantum Error Correction in which logical qubits are encoded in a larger number of physical qubits. One promising encoding is known as the colour code which has broad applicability across ...
Efficient Time-Aware Partitioning of Quantum Circuits for Distributed Quantum Computing
Raymond P. H. Wu, Chathu Ranaweera, Sutharshan Rajasegarar +3 more·Mar 4, 2026
To overcome the physical limitations of scaling monolithic quantum computers, distributed quantum computing (DQC) interconnects multiple smaller-scale quantum processing units (QPUs) to form a quantum network. However, this approach introduces a crit...
Kinematic budget of quantum correlations
Maaz Khan, Subhadip Mitra·Mar 4, 2026
The diversity of quantum correlations -- discord, entanglement, steering, and Bell nonlocality -- disappears at the observable second-moment kinematic level. By treating state purity as a finite resource, we introduce a local-unitary-invariant budget...
Towards Practical Quantum Federated Learning: Enhancing Efficiency and Noise Tolerance
Suzukaze Kamei, Hideaki Kawaguchi, Takahiko Satoh·Mar 4, 2026
Federated Learning (FL) enables privacy-preserving distributed model training, yet remains vulnerable to gradient inversion and model leakage attacks. Quantum communication has been proposed to provide information-theoretic security for parameter agg...
Approximate Amplitude Encoding with the Adaptive Interpolating Quantum Transform
Gekko Budiutama, Shunsuke Daimon, Xinchi Huang +2 more·Mar 4, 2026
Amplitude encoding of real-world data on quantum computers is often the workflow bottleneck: direct amplitude encoding scales poorly with input size and can offset any speedups in subsequent processing. Fourier-based sparse amplitude encoding lowers ...
Mitigating many-body quantum crosstalk with tensor-network robust control
Nguyen H. Le, Florian Mintert, Eran Ginossar·Mar 4, 2026
Quantum crosstalk poses a major challenge to scaling up quantum computations as its strength is typically unknown and its effect accumulates exponentially as system size grows. Here, we show that many-body robust control can be utilized to suppress u...
Quantum Lego Power-up: Designing Transversal Gates with Tensor Networks
ChunJun Cao, Brad Lackey·Mar 3, 2026
Transversal gates are the simplest form of fault-tolerant gates and are relatively easy to implement in practice. Yet designing codes that support useful transversal operations -- especially non-Clifford or addressable gates -- remains difficult with...
Entanglement-Assisted Codes Outside the Stabilizer Framework
Jaszmine DeFranco, Andrew Nemec·Mar 3, 2026
We show how entanglement-assisted codes can be constructed from arbitrary quantum codes by associating them with quantum codes for erasure channels. If a subset of physical qubits is correctable for an erasure error, then it naturally forms the recei...
Achieving speedup in Dark Matter search experiments with a transmon-based NISQ algorithm
Roberto Moretti, Pietro Campana, Rodolfo Carobene +9 more·Mar 3, 2026
Coherent detection of ultralight bosonic dark matter can be achieved by monitoring slow Rabi oscillations in superconducting qubits. We introduce an ancilla-assisted, gate-based protocol that enhances sensitivity to the hidden photon kinetic mixing p...
Scaling of silicon spin qubits under correlated noise
Juan S. Rojas-Arias, Leon C. Camenzind, Yi-Hsien Wu +8 more·Mar 3, 2026
The path to fault-tolerant quantum computing hinges on hardware that scales while remaining compatible with quantum error correction (QEC). Silicon spin qubits are a leading hardware candidate because they combine industrial fabrication compatibility...