Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Toward end-to-end quantum simulation for protein dynamics
Zhenning Liu, Xiantao Li, Chunhao Wang +1 more·Nov 6, 2024
Modeling and simulating the protein folding process overall remains a grand challenge in computational biology. We systematically investigate end-to-end quantum algorithms for simulating various protein dynamics with effects, such as mechanical force...
Mitigating Non-Markovian and Coherent Errors Using Quantum Process Tomography of Proxy States
I-Chi Chen, Bharath Hebbe Madhusudhana·Nov 5, 2024
Detecting mitigating and correcting errors in quantum control is among the most pertinent contemporary problems in quantum technologies. We consider three of the most common bosonic error correction codes -- the CLY, binomial and dual rail and compar...
Mixed-State Topological Order under Coherent Noises
Seunghun Lee, Eun-Gook Moon·Nov 5, 2024
Mixed-state phases of matter under local decoherence have recently garnered significant attention due to the ubiquitous presence of noise in current quantum processors. One of the key issues is understanding how topological quantum memory is affected...
Generalizing the matching decoder for the Chamon code
Zohar Schwartzman-Nowik, Benjamin J. Brown·Nov 5, 2024
Different choices of quantum error-correcting codes can reduce the demands on the physical hardware needed to build a quantum computer. To achieve the full potential of a code, we must develop practical decoding algorithms that can correct errors tha...
Almost linear decoder for optimal geometrically local quantum codes
Quinten Eggerickx, Adam Wills, Ting-Chun Lin +2 more·Nov 5, 2024
Geometrically local quantum codes, which are error correction codes embedded in $\mathbb{R}^D$ with checks acting only on qubits within a fixed spatial distance, have garnered significant interest. Recently, it has been demonstrated how to achieve ge...
Polynomial-Time Classical Simulation of Noisy Quantum Circuits with Naturally Fault-Tolerant Gates
Jon Nelson, Joel Rajakumar, Dominik Hangleiter +1 more·Nov 4, 2024
We construct a polynomial-time classical algorithm that samples from the output distribution of noisy geometrically local Clifford circuits with any product-state input and single-qubit measurements in any basis. Our results apply to circuits with ne...
Assessing Superposition-Targeted Coverage Criteria for Quantum Neural Networks
Minqi Shao, Jianjun Zhao·Nov 3, 2024
Quantum Neural Networks (QNNs) have achieved initial success in various tasks by integrating quantum computing and neural networks. However, growing concerns about their reliability and robustness highlight the need for systematic testing. Unfortunat...
Dimension Independent and Computationally Efficient Shadow Tomography
Pulkit Sinha·Nov 3, 2024
We describe a new shadow tomography algorithm that uses n=Θ(√mlogm/є2) samples, for m measurements and additive error є, which is independent of the dimension of the quantum state being learned. This stands in contrast to all previously known algorit...
Lorentz-Equivariant Quantum Graph Neural Network for High-Energy Physics
Md Abrar Jahin, Md Akmol Masud, Md Wahiduzzaman Suva +2 more·Nov 3, 2024
The rapid data surge from the high-luminosity Large Hadron Collider introduces critical computational challenges requiring novel approaches for efficient data processing in particle physics. Quantum machine learning, with its capability to leverage t...
Noise-aware circuit compilations for a continuously parameterized two-qubit gateset
Christopher Yale, Rich Rines, V. Omole +9 more·Nov 2, 2024
State-of-the-art noisy-intermediate-scale quantum (NISQ) processors are currently implemented across a variety of hardware platforms, each with their own distinct gatesets. As such, circuit compilation should not only be aware of, but also deeply con...
Dynamical simulations of many-body quantum chaos on a quantum computer
Laurin E. Fischer, Matea Leahy, Andrew Eddins +16 more·Nov 1, 2024
Quantum circuits with local unitaries offer a platform to explore many-body quantum dynamics in discrete time. Their locality makes them suitable for current processors, but verification at scale is difficult for non-integrable systems. Here we study...
Reshaping quantum device noise via repetition code circuits
Yue Ma, Michael Hanks, Evdokia Gneusheva +1 more·Nov 1, 2024
Noise of a quantum processor can be an important resource for simulating open quantum dynamics. However, this requires characterizing the device noise and then transforming it into a target structure. Here, we take the first step toward this goal: We...
Pauli Transfer Matrices
Lukas Hantzko, Lennart Binkowski, Sabhyata Gupta·Nov 1, 2024
Analysis of quantum processes, especially in the context of noise, errors, and decoherence is essential for the improvement of quantum devices. An intuitive representation of those processes modeled by quantum channels are Pauli transfer matrices. Th...
Reinforcement learning with learned gadgets to tackle hard quantum problems on real hardware
Akash Kundu, Leopoldo Sarra·Oct 31, 2024
Quantum computing offers exciting opportunities for simulating complex quantum systems and optimizing large scale combinatorial problems, but its practical use is limited by device noise and constrained connectivity. Designing quantum circuits, which...
Comparing the performance of practical two-qubit gates for individual $^{171}$Yb ions in yttrium orthovanadate
Mahsa Karimi, Faezeh Kimiaee Asadi, Stephen C. Wein +1 more·Oct 31, 2024
In this paper, we investigate three schemes for implementing Controlled-Z (CZ) gates between individual ytterbium (Yb) rare-earth ions doped into yttrium orthovanadate (YVO$_4$ or YVO). Specifically, we investigate the CZ gates based on magnetic dipo...
Topologically protected Bell-cat states in a simple spin model
B. Lajci, D. H. J. O'Dell, J. Mumford·Oct 31, 2024
We consider the topological properties of the so-called central spin model that consists of $N$ identical spins coupled to a single distinguishable central spin which arises in physical systems such as circuit-QED and bosonic Josephson junctions coup...
Detrimental non-Markovian errors for surface code memory
John F Kam, S. Gicev, Kavan Modi +2 more·Oct 31, 2024
The realization of fault-tolerant quantum computers hinges on effective quantum error correction (QEC) protocols, whose performance significantly relies on the nature of the underlying noise. In this work, we directly study the structure of non-Marko...
On-Chip Verified Quantum Computation with an Ion-Trap Quantum Processing Unit.
Cica Gustiani, D. Leichtle, Jonathan Miller +3 more·Oct 31, 2024
We present a novel approach to cryptographically secure verification and benchmarking of quantum computing, demonstrating our approach on an ion-trap quantum computer. Unlike previous cryptographically secure verification protocols, which typically r...
Error Threshold of SYK Codes from Strong-to-Weak Parity Symmetry Breaking
Jaewon Kim, E. Altman, Jong Yeon Lee·Oct 31, 2024
Quantum error correction (QEC) codes are fundamentally linked to quantum phases of matter: the degenerate ground state manifold corresponds to the code space, while topological excitations represent error syndromes. Building on this concept, the Sach...
A Universal Quantum Computer From Relativistic Motion
Philip A. LeMaitre, T. R. Perche, Marius Krumm +1 more·Oct 31, 2024
We present an explicit construction of a relativistic quantum computing architecture using a variational quantum circuit approach that is shown to allow for universal quantum computing. The variational quantum circuit consists of tunable single-qubit...