Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum error correction for unresolvable spin ensemble
Harsh Sharma, H. Dhar, Hoi-Kwan Lau·Aug 21, 2024
Spin ensembles are promising quantum technological platforms, but their utility relies on the ability to perform quantum error correction (QEC) for the specific decoherence in these systems. Typical QEC for ensembles requires addressing individually ...
Non-Clifford diagonalization for measurement shot reduction in quantum expectation value estimation
Nicolas Sawaya, Daan Camps, N. Tubman +2 more·Aug 21, 2024
Estimating expectation values on near-term quantum computers often requires a prohibitively large number of measurements. One widely-used strategy to mitigate this problem has been to partition an operator's Pauli terms into sets of mutually commutin...
Simulators for Quantum Network Modelling: A Comprehensive Review
Oceane Bel, M. Kiran·Aug 21, 2024
Quantum network research, is exploring new networking protocols, physics-based hardware and novel experiments to demonstrate how quantum distribution will work over large distances. Current work explores much of these concepts in simulations, that ar...
M2CS: A microwave measurement and control system for large-scale superconducting quantum processors
J. ZHANG 张, Xuandong 炫东 Sun 孙, Zechen 泽臣 Guo 郭 +17 more·Aug 21, 2024
As superconducting quantum computing continues to advance at an unprecedented pace, there is a compelling demand for the innovation of specialized electronic instruments that act as crucial conduits between quantum processors and host computers. Here...
Automated Synthesis of Fault-Tolerant State Preparation Circuits for Quantum Error Correction Codes
Tom Peham, Ludwig Schmid, Lucas Berent +2 more·Aug 21, 2024
A central ingredient in fault-tolerant quantum algorithms is the initialization of a logical state for a given quantum error-correcting code from a set of noisy qubits. A scheme that has demonstrated promising results for small code instances that ar...
Capturing anharmonic effects in single vibronic level fluorescence spectra using local harmonic Hagedorn wavepacket dynamics
Zhan Tong Zhang, M'at'e Visegr'adi, Jivr'i J. L. Van'ivcek·Aug 21, 2024
Hagedorn wavepacket dynamics yields exact single vibronic level (SVL) fluorescence spectra in global harmonic models. To partially describe the effects of anharmonicity, important in the spectra of real molecules, we describe a combination of the Hag...
Quantum Property Preservation
Kumar Saurav, Daniel A. Lidar·Aug 21, 2024
Quantum property preservation (QPP) is the problem of maintaining a target property of a quantum system for as long as possible. This problem arises naturally in the context of open quantum systems subject to decoherence. Here, we develop a general t...
Quantum calculation for two-stream instability and advection test of Vlasov–Maxwell equations: numerical evaluation of Hamiltonian simulation
Hayato Higuchi, J. Pedersen, Kiichiro Toyoizumi +3 more·Aug 21, 2024
The Vlasov–Maxwell equations provide kinetic simulations of collisionless plasmas, but numerically solving them on classical computers is often impractical. This is due to the computational resource constraints imposed by the time evolution in the si...
Exact spectral gaps of random one-dimensional quantum circuits
Andrew E. Deneris, Pablo Bermejo, Paolo Braccia +2 more·Aug 20, 2024
The spectral gap of local random quantum circuits is a fundamental property that determines how close the moments of the circuit's unitaries match those of a Haar random distribution. When studying spectral gaps, it is common to bound these quantitie...
SWAP-less Implementation of Quantum Algorithms
Berend Klaver, Stefan Rombouts, Michael Fellner +4 more·Aug 20, 2024
We present a formalism based on tracking the flow of parity quantum information to implement algorithms on devices with limited connectivity without qubit overhead, SWAP operations or shuttling. Instead, we leverage the fact that entangling gates not...
Optimizing Quantum Fourier Transformation (QFT) Kernels for Modern NISQ and FT Architectures
Yuwei Jin, Xiangyu Gao, Minghao Guo +4 more·Aug 20, 2024
Rapid development in quantum computing leads to the appearance of several quantum applications. Quantum Fourier Transformation (QFT) sits at the heart of many of these applications. Existing work leverages SAT solver or heuristics to generate a hardw...
Solving an industrially relevant quantum chemistry problem on quantum hardware
Ludwig Nützel, Alexander Gresch, Lukas Hehn +10 more·Aug 20, 2024
Quantum chemical calculations are among the most promising applications for quantum computing. Implementations of dedicated quantum algorithms on available quantum hardware were so far, however, mostly limited to comparatively simple systems without ...
Stabilizer codes for Heisenberg-limited many-body Hamiltonian estimation
S. Antu, Sisi Zhou·Aug 20, 2024
Estimating many-body Hamiltonians has wide applications in quantum technology. By allowing coherent evolution of quantum systems and entanglement across multiple probes, the precision of estimating a fully connected k-body interaction can scale up to...
Implementation of a continuous-time quantum walk on a sparse graph
Zhaoyang Chen, Guanzhong Li, Lvzhou Li·Aug 20, 2024
Continuous-time quantum walks (CTQWs) play a crucial role in quantum computing, especially for designing quantum algorithms. However, how to efficiently implement CTQWs is a challenging issue. In this paper, we study implementation of CTQWs on sparse...
Improved Differential Evolution based Feature Selection through Quantum, Chaos, and Lasso
Yelleti Vivek, S. Vadlamani, Vadlamani Ravi +1 more·Aug 20, 2024
Modern deep learning continues to achieve outstanding performance on an astounding variety of high-dimensional tasks. In practice, this is obtained by fitting deep neural models to all the input data with minimal feature engineering, thus sacrificing...
Enhanced Shadow Tomography of Molecular Excited States from Enforcing $N$-representability Conditions by Semidefinite Programming
Irma Avdic, D. Mazziotti·Aug 20, 2024
Excited-state properties of highly correlated systems are key to understanding photosynthesis, luminescence, and the development of novel optical materials, but accurately capturing their interactions is computationally costly. We present an algorith...
Post-Quantum Secure UE-to-UE Communications
Sanzida Hoque, Abdullah Aydeger, Engin Zeydan·Aug 20, 2024
The rapid development of quantum computing poses a significant threat to the security of current cryptographic systems, including those used in User Equipment (UE) for mobile communications. Conventional cryptographic algorithms such as Rivest–Shamir...
Bounding the Systematic Error in Quantum Error Mitigation due to Model Violation
L. Govia, S. Majumder, S.V. Barron +7 more·Aug 20, 2024
Quantum error mitigation is a promising route to achieving quantum utility, and potentially quantum advantage in the near term. Many state-of-the-art error-mitigation schemes use knowledge of the errors in the quantum processor, which opens up the qu...
Quantum machine learning algorithms for anomaly detection: A review
Sebastiano Corli, Lorenzo Moro, Daniele Dragoni +2 more·Aug 20, 2024
The advent of quantum computers has justified the development of quantum machine learning algorithms , based on the adaptation of the principles of machine learning to the formalism of qubits. Among such quantum algorithms, anomaly detection represen...
Calculating the Energy Profile of an Enzymatic Reaction on a Quantum Computer.
Patrick Ettenhuber, Mads Bøttger Hansen, Irfansha Shaik +7 more·Aug 20, 2024
Quantum computing (QC) provides a promising avenue for enabling quantum chemistry calculations, which are classically impossible due to computational complexity that increases exponentially with system size. As fully fault-tolerant algorithms and har...