Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,132
This Month
1,153
Today
0
Research Volume
15,326 papers in 12 months (-9% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Synthesis of energy-conserving quantum circuits with XY interaction
Ge Bai, Iman Marvian·Sep 20, 2023
We study quantum circuits constructed from iSWAP gates and, more generally, from the entangling gates that can be realized with the XX + YY interaction alone. Such gates preserve the Hamming weight of states in the computational basis, which means th...
Qutrit state discrimination with mid-circuit measurements
Naoki Kanazawa, Haruki Emori, D. McKay·Sep 20, 2023
Qutrit state readout is an important technology not only for execution of qutrit algorithms but also for erasure detection in error correction circuits and leakage error characterization of the gate set. Conventional technique using a specialized IQ ...
Quantum Algorithm for Estimating Betti Numbers Using Cohomology Approach
Nhat A. Nghiem, Xianfeng David Gu, Tzu-Chieh Wei·Sep 19, 2023
Topological data analysis has emerged as a powerful tool for analyzing large-scale data. An abstract simplicial complex, in principle, can be built from data points, and by using tools from homology, topological features could be identified. Given a ...
Hardness results for decoding the surface code with Pauli noise
Alex Fischer, Akimasa Miyake·Sep 19, 2023
Real quantum computers will be subject to complicated, qubit-dependent noise, instead of simple noise such as depolarizing noise with the same strength for all qubits. We can do quantum error correction more effectively if our decoding algorithms tak...
QuBEC: Boosting Equivalence Checking for Quantum Circuits With QEC Embedding
Chao Lu, Navnil Choudhury, Utsav Banerjee +2 more·Sep 19, 2023
Quantum computing has proven to be capable of accelerating many algorithms by performing tasks that classical computers cannot. As quantum algorithms and implementations grow more complex, the need for rigorous circuit verification becomes critical, ...
Ultrafast Cascade Charge Transfer in Multibandgap Colloidal Quantum Dot Solids Enables Threshold Reduction for Optical Gain and Stimulated Emission.
N. Taghipour, M. Dalmases, G. Whitworth +2 more·Sep 19, 2023
Achieving low-threshold infrared stimulated emission in solution-processed quantum dots is critical to enable real-life applications including photonic integrated circuits (PICs), LIDAR application, and optical telecommunication. However, realization...
QubiC 2.0: An Extensible Open-Source Qubit Control System Capable of Mid-Circuit Measurement and Feed-Forward
Yilun Xu, Gang-Ming Huang, Neelay Fruitwala +5 more·Sep 19, 2023
Researchers manipulate and measure quantum processing units via the classical electronics control system. We developed an open-source FPGA-based quantum bit control system called QubiC for superconducting qubits. After a few years of qubit calibratio...
A hybrid algorithm for quadratically constrained quadratic optimization problems
Hongyi Zhou, Sirui Peng, Q. Li +1 more·Sep 19, 2023
Quadratically Constrained Quadratic Programs (QCQPs) are an important class of optimization problems with diverse real-world applications. In this work, we propose a variational quantum algorithm for general QCQPs. By encoding the variables in the am...
Quantum Multiplier Based on Exponent Adder
Junpeng Zhan·Sep 18, 2023
Quantum multiplication is a fundamental operation in quantum computing. It is important to have a quantum multiplier with low complexity. In this paper, we propose the Quantum Multiplier Based on Exponent Adder (QMbead), a new approach that requires ...
Fault-tolerant hyperbolic Floquet quantum error correcting codes
Ali Fahimniya, Hossein Dehghani, Kishor Bharti +4 more·Sep 18, 2023
A central goal in quantum error correction is to reduce the overhead of fault-tolerant quantum computing by increasing noise thresholds and reducing the number of physical qubits required to sustain a logical qubit. We introduce a potential path towa...
Quantum algorithms for state preparation and data classification based on stabilizer codes
P. Jouzdani, H. A. Hashim, E. Mucciolo·Sep 18, 2023
Quantum error correction (QEC) is a way to protect quantum information against noise. It consists of encoding input information into entangled quantum states known as the code space. Furthermore, to classify if the encoded information is corrupted or...
Drastic Circuit Depth Reductions with Preserved Adversarial Robustness by Approximate Encoding for Quantum Machine Learning
Maxwell T. West, Azar C. Nakhl, J. Heredge +4 more·Sep 18, 2023
Quantum machine learning (QML) is emerging as an application of quantum computing with the potential to deliver quantum advantage, but its realisation for practical applications remains impeded by challenges. Amongst those, a key barrier is the compu...
Quantum computation of π → π* and n → π* excited states of aromatic heterocycles
Maria A. Castellanos, Mario Motta, Julia E Rice·Sep 18, 2023
The computation of excited electronic states is an important application for quantum computers. In this work, we simulate the excited state spectra of four aromatic heterocycles on IBM superconducting quantum computers, focussing on active spaces of ...
Automated Superconducting Qubit Characterisation Platform Based on a Modified 3D Printer
Haochen Li, Soe Gon Yee Thant, Rainer Dumke·Sep 18, 2023
Josephson Junctions are important components in superconducting qubits. It introduces anharmonicity to the energy level spacings of the qubit which allow us to identify two unique quantum energy states for computing. It is difficult to fabricate mult...
Correcting on-chip distortion of control pulses with silicon spin qubits
Ming 铭 Ni 倪, R. Ma 马, Zhen-Zhen 真真 Kong 孔 +10 more·Sep 18, 2023
In semiconductor quantum dot systems, pulse distortion is a significant source of coherent errors, which impedes qubit characterization and control. Here, we demonstrate two calibration methods using a two-qubit system as the detector to correct dist...
Fault-tolerant one-bit addition with the smallest interesting color code
Yang Wang, Selwyn Simsek, T. Gatterman +9 more·Sep 18, 2023
Fault-tolerant operations based on stabilizer codes are the state of the art in suppressing error rates in quantum computations. Most such codes do not permit a straightforward implementation of non-Clifford logical operations, which are necessary to...
Quantum Vision Clustering
Xuan-Bac Nguyen, Benjamin Thompson, Hugh Churchill +2 more·Sep 18, 2023
Unsupervised visual clustering has garnered significant attention in recent times, aiming to characterize distributions of unlabeled visual images through clustering based on a parameterized appearance approach. Alternatively, clustering algorithms c...
Quantum Algorithm for Imaginary-Time Green's Functions.
Diksha Dhawan, D. Zgid, Mario Motta·Sep 18, 2023
Green's function methods lead to ab initio, systematically improvable simulations of molecules and materials while providing access to multiple experimentally observable properties such as the density of states and the spectral function. The calculat...
Des-q: a quantum algorithm to provably speedup retraining of decision trees
Niraj Kumar, Romina Yalovetzky, Changhao Li +2 more·Sep 18, 2023
Decision trees are widely adopted machine learning models due to their simplicity and explainability. However, as training data size grows, standard methods become increasingly slow, scaling polynomially with the number of training examples. In this ...
Non-Linear Transformations of Quantum Amplitudes: Exponential Improvement, Generalization, and Applications
Arthur G. Rattew, P. Rebentrost·Sep 18, 2023
Quantum algorithms manipulate the amplitudes of quantum states to find solutions to computational problems. In this work, we present a framework for applying a general class of non-linear functions to the amplitudes of quantum states, with up-to an e...