Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
SA-DQAS: Self-attention Enhanced Differentiable Quantum Architecture Search
Yize Sun, Jiarui Liu, Zixin Wu +2 more·Jun 13, 2024
We introduce SA-DQAS, a novel framework that enhances Differentiable Quantum Architecture Search (DQAS) by integrating a self-attention mechanism, enabling more effective quantum circuit design for variational quantum algorithms. Unlike DQAS, which t...
Reinforcement Learning to Disentangle Multiqubit Quantum States from Partial Observations
Pavel Tashev, Stefan Petrov, Friederike Metz +1 more·Jun 12, 2024
Using partial knowledge of a quantum state to control multiqubit entanglement is a largely unexplored paradigm in the emerging field of quantum interactive dynamics with the potential to address outstanding challenges in quantum state preparation and...
Classical simulability of constant-depth linear-optical circuits with noise
Changhun Oh·Jun 12, 2024
Noise is one of the main obstacles to realizing quantum devices that achieve a quantum computational advantage. A possible approach to minimize the noise effect is to employ shallow-depth quantum circuits since noise typically accumulates as circuit ...
Identifying Bottlenecks of NISQ-Friendly HHL Algorithms
Marc Andreu Marfany, Alona Sakhnenko, J. Lorenz·Jun 10, 2024
Quantum computing promises enabling solving large problem instances, e.g. large linear equation systems with HHL algorithm, once the hardware stack matures. For the foreseeable future quantum computing will remain in the so-called NISQ era, in which ...
Simulating Parton Fragmentation on Quantum Computers
Tianyin Li, Hongxi Xing, Dan-Bo Zhang·Jun 9, 2024
Parton fragmentation functions (FFs) are indispensable for understanding processes of hadron production ubiquitously existing in high-energy collisions, but their first principle determination has never been realized due to the insurmountable difficu...
Integrating Quantum Algorithms with Gravitational-Wave Metrology for Enhanced Signal Detection
Vaidik A. Sharma·Jun 8, 2024
This study explores the integration of quantum algorithms, specifically Grover's algorithm, with quantum metrology to enhance the efficiency and sensitivity of gravitational-wave detection. By combining quantum matched filtering with precise paramete...
Reliable Quantum Memories with Unreliable Components
A. K. Nayak, Eric Chitambar, L. Varshney·Jun 8, 2024
Quantum memory systems are vital in quantum information processing for dependable storage and retrieval of quantum states. Inspired by classical reliability theories that synthesize reliable computing systems from unreliable components, we formalize ...
MIMO With 1-b Pre/Postcoding Resolution: A Quantum Annealing Approach
Ioannis Krikidis·Jun 7, 2024
In this article, we study the problem of digital pre/postcoding design in multiple-input multiple-output (MIMO) systems with 1-b resolution per complex dimension. The optimal solution that maximizes the received signal-to-noise ratio relies on an NP-...
Residue Number System (RNS) Based Distributed Quantum Addition
Bhaskar Gaur, Travis S. Humble, Himanshu Thapliyal·Jun 7, 2024
Quantum Arithmetic faces limitations such as noise and resource constraints in the current Noisy Intermediate Scale Quantum (NISQ) era quantum computers. We propose using Distributed Quantum Computing (DQC) to overcome these limitations by substituti...
High-precision and low-depth quantum algorithm design for eigenstate problems
Jinzhao Sun, Pei Zeng, Tom Gur +1 more·Jun 6, 2024
Estimating the eigenstate properties of quantum systems is a long-standing, challenging problem for both classical and quantum computing. Existing universal quantum algorithms typically rely on ideal and efficient query models (e.g. time evolution op...
iTrust: Trust-Region Optimisation with Ising Machines
Sayantan Pramanik, Kaumudibikash Goswami, Sourav Chatterjee +1 more·Jun 6, 2024
In this work, we present a heretofore unseen application of Ising machines to perform trust region-based optimisation with box constraints. This is done by considering a specific form of opto-electronic oscillator-based coherent Ising machines with c...
T-Count Optimizing Genetic Algorithm for Quantum State Preparation
Andrew Wright, Marco Lewis, Paolo Zuliani +1 more·Jun 6, 2024
Quantum state preparation is a crucial process within numerous quantum algorithms, and the need for efficient initialization of quantum registers is ever increasing as demand for useful quantum computing grows. The problem arises as the number of qub...
Robust preparation of ground state phases under noisy imaginary time evolution
Aleksei Khindanov, Yongxin Yao, T. Iadecola·Jun 6, 2024
Nonunitary state preparation protocols such as imaginary time evolution (ITE) offer substantial advantages relative to unitary ones, including the ability to prepare certain long-range correlated states more efficiently. Here, we ask whether such pro...
Leakage mobility in superconducting qubits as a leakage reduction unit
Joan Camps, Ophelia Crawford, G. P. Gehér +3 more·Jun 6, 2024
Leakage from the computational subspace is a damaging source of noise that degrades the performance of most qubit types. Unlike other types of noise, leakage cannot be overcome by standard quantum error correction techniques and requires dedicated le...
Circuit-level fault tolerance of cat codes
Long D. H. My, Shu-Fen Qin, Hui Khoon Ng·Jun 6, 2024
Bosonic codes encode quantum information into a single infinite-dimensional physical system endowed with error correction capabilities. This reduces the need for complex management of many physical constituents compared with standard approaches emplo...
Leveraging off-the-shelf silicon chips for quantum computing
J. Michniewicz, M. Kim·Jun 5, 2024
There is a growing demand for quantum computing across various sectors, including finance, materials, and studying chemical reactions. A promising implementation involves semiconductor qubits utilizing quantum dots within transistors. While academic ...
Quantum sensing from gravity as a universal dephasing channel for qubits
Alexander V. Balatsky, P. Roushan, J. Schaltegger +1 more·Jun 5, 2024
We investigate the interaction of a transmon qubit with a classical gravitational field. Exploiting the generic phenomena of the gravitational redshift and Aharonov-Bohm phase, we show that entangled quantum states dephase with a universal rate. The ...
A quantum neural network-based approach to power quality disturbances detection and recognition
Guo-Dong Li, Haibin He, Yue Li +4 more·Jun 5, 2024
As an emerging technology force, quantum algorithms have shown great potential and unique advantages in many fields of application. Power quality disturbances (PQDs) affect the security and stability of the power system, which may lead to equipment d...
Approximating dynamical correlation functions with constant depth quantum circuits
Reinis Irmejs, R. A. Santos·Jun 5, 2024
One of the most important quantities characterizing the microscopic properties of quantum systems are dynamical correlation functions. These correlations are obtained by time-evolving a perturbation of an eigenstate of the system, typically the groun...
Generalized Cycle Benchmarking Algorithm for Characterizing Midcircuit Measurements
Zhihan Zhang, Senrui Chen, Yunchao Liu +1 more·Jun 4, 2024
Midcircuit measurements (MCMs) are crucial ingredients in the development of fault-tolerant quantum computation. While there have been rapid experimental progresses in realizing MCMs, a systematic method for characterizing noisy MCMs is still under e...