Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Assumption-free fidelity bounds for hardware noise characterization
Nicolò Colombo·Apr 9, 2025
In the Quantum Supremacy regime, quantum computers may overcome classical machines on several tasks if we can estimate, mitigate, or correct unavoidable hardware noise. Estimating the error requires classical simulations, which become unfeasible in t...
Variational quantum machine learning with quantum error detection
Eromanga Adermann, Hajime Suzuki, Muhammad Usman·Apr 9, 2025
Quantum machine learning (QML) is an emerging field that promises advantages such as faster training, improved reliability and superior feature extraction over classical counterparts. However, its implementation on quantum hardware is challenging due...
Noise-aware entanglement generation protocols for superconducting qubits with impedance-matched FBAR transducers
Erin Sheridan, M. Senatore, Samuel Schwab +8 more·Apr 9, 2025
Connecting superconducting quantum processors to telecommunications-wavelength quantum networks is critically necessary to enable distributed quantum computing, secure communications, and other applications. Optically-mediated entanglement heralding ...
Can gravity mediate the transmission of quantum information?
Andrea Mari, Stefano Zippilli, David Vitali·Apr 8, 2025
We propose an experiment to test the non-classicality of the gravitational interaction. We consider two optomechanical systems that are perfectly isolated, except for a weak gravitational coupling. If a suitable resonance condition is satisfied, an o...
Entangling quantum memories over 420 km in fiber
Xi-Yu Luo, Chao-Yang Wang, Mingjuan Zheng +17 more·Apr 8, 2025
Long-distance entanglement is pivotal for quantum communication, distributed quantum computing and sensing. Significant progresses have been made in extending the distribution distance of entangled photons, either in free space or fiber. For future q...
AriaQuanta: A Quantum Software for Quantum Computing
A. Cheraghi, H. Yeganeh·Apr 8, 2025
We introduce AriaQuanta, a powerful and flexible tool for designing, simulating, and implementing quantum circuits. This open-source software is designed to make it easy for users of all experience levels to learn and use quantum computing. The first...
Shot noise signatures of candidate states for the fractional quantum Hall <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mfrac><mml:mn>12</mml:mn><mml:mn>5</mml:mn></mml:mfrac></mml:mrow></mml:math> state
Goutham Vinjamuri, Ankur Das·Apr 8, 2025
Fractional quantum Hall (FQH) states are highly sought after because of their ability to host non-abelian anyons, whose braiding statistics make them excellent candidates for qubits in topological quantum computing. Multiple theoretical studies on th...
Assessing Teleportation of Logical Qubits in a Distributed Quantum Architecture under Error Correction
John Stack, Ming Wang, Frank Mueller·Apr 8, 2025
Quantum computing is facing challenges in terms of scaling to thousands of qubits and implementing quantum error correction (QEC). Scaling efforts focus on connecting multiple smaller quantum devices (nodes) in a distributed manner. Non-local CNOTs a...
Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang +9 more·Apr 7, 2025
Optically active spin defects in van der Waals (vdW) materials are a promising platform for quantum sensing, potentially enabling shorter standoff distances than defects in diamond and thus improved measurement signal-to-noise ratio (SNR) and spatial...
Measuring Rényi entropy using a projected Loschmidt echo
Yi-Neng Zhou, Robin Löwenberg, Julian Sonner·Apr 7, 2025
We present efficient and practical protocols to measure the second Rényi entropy (RE), whose exponential is known as the purity. We achieve this by establishing a direct connection to a Loschmidt echo (LE) type measurement sequence, applicable to qua...
How Far do Lindbladians Go?
Jihong Cai, Advith Govindarajan, Marius Junge·Apr 7, 2025
We study controllability of finite-dimensional open quantum systems under a general Markovian control model combining full coherent (unitary) control with tunable dissipative channels. Assuming the Hamiltonian controls is a Hörmander system that gene...
Radio frequency single electron transmission spectroscopy of a semiconductor Si/SiGe quantum dot
I. Fattal, J. V. Damme, B. Raes +20 more·Apr 7, 2025
Rapid single shot spin readout is a key ingredient for fault tolerant quantum computing with spin qubits. An RF-SET (radio-frequency single electron transistor) is predominantly used as its the readout timescale is far shorter than the spin decoheren...
Measuring the Oscillation Frequency Beyond the Diffraction Limit
Chao-Ning Hu, Jun Xin, Xiao-Ming Lu·Apr 6, 2025
High-resolution array detectors are widely used in single-particle tracking, but their performance is limited by excess noise from background light and dark current. As pixel resolution increases, the diminished signal per pixel exacerbates susceptib...
Dynamically stable two-mode squeezing in cavity optomechanics
Chen Wang, Shi-fan Qi·Apr 4, 2025
Bosonic two-mode squeezed states are paradigmatic entangled states with broad applications in quantum information processing and quantum metrology. In this work, we propose a two-mode squeezing scheme in a hybrid three-mode cavity optomechanical syst...
Improved Strategies for Fermionic Quantum Simulation with Global Interactions
Thierry N. Kaldenbach, Erik Schultheis, Niklas Stewen +1 more·Apr 4, 2025
We present efficient quantum circuits for fermionic excitation operators tailored for ion trap quantum computers exhibiting the Mølmer-Sørensen (MS) gate. Such operators commonly arise in the study of static and dynamic properties in electronic struc...
Tracking and Distinguishing Slime Mold Solutions to the Traveling Salesman Problem through Synchronized Amplification in the Non-Equilibrium Steady State
Suyash Bajpai, M. Aono, Philip Kurian·Apr 4, 2025
The plasmodium of the true slime mold Physarum polycephalum serves as a platform to study information processing in non-equilibrium active matter, showing complex oscillations and computation despite its simple morphology. Past experiments used Physa...
Optimizing Quantum Circuits via ZX Diagrams using Reinforcement Learning and Graph Neural Networks
Alexander Mattick, Maniraman Periyasamy, Christian Ufrecht +4 more·Apr 4, 2025
Quantum computing is currently strongly limited by the impact of noise, in particular introduced by the application of two-qubit gates. For this reason, reducing the number of two-qubit gates is of paramount importance on noisy intermediate-scale qua...
SpinHex: A low-crosstalk, spin-qubit architecture based on multi-electron couplers
R. Otxoa, Josu Etxezarreta Martinez, Paul Schnabl +3 more·Apr 4, 2025
Semiconductor spin qubits are an attractive quantum computing platform that offers long qubit coherence times and compatibility with existing semiconductor fabrication technology for scale up. Here, we propose a spin-qubit architecture based on spinl...
Bacon-Shor Board Games
M. Sohaib Alam, Jun Zen, Thomas R. Scruby·Apr 3, 2025
We identify a period-4 measurement schedule for the checks of the Bacon-Shor code that fully covers spacetime with constant-weight detectors, and is numerically observed to provide the code with a threshold. Unlike previous approaches, our method doe...
QUITS: A modular Qldpc code circUIT Simulator
Mingyu Kang, Yingjia Lin, Hanwen Yao +3 more·Apr 3, 2025
To achieve quantum fault tolerance with lower overhead, quantum low-density parity-check (QLDPC) codes have emerged as a promising alternative to topological codes such as the surface code, offering higher code rates. To support their study, an end-t...