Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,639 papers in 12 months (-16% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Entangling Quantum Generative Adversarial Networks.
M. Niu, Alexander Zlokapa, M. Broughton +4 more·Apr 30, 2021
Generative adversarial networks (GANs) are one of the most widely adopted machine learning methods for data generation. In this work, we propose a new type of architecture for quantum generative adversarial networks (an entangling quantum GAN, EQ-GAN...
Optimal training of variational quantum algorithms without barren plateaus
T. Haug, M. Kim·Apr 29, 2021
Variational quantum algorithms (VQAs) promise efficient use of near-term quantum computers. However, training VQAs often requires an extensive amount of time and suffers from the barren plateau problem where the magnitude of the gradients vanishes wi...
Relaxation of stationary states on a quantum computer yields a unique spectroscopic fingerprint of the computer’s noise
Scott E. Smart, Zixuan Hu, S. Kais +1 more·Apr 29, 2021
Quantum computing has the potential to revolutionize computing, but its significant sensitivity to noise requires sophisticated error correction and mitigation. Traditionally, noise on the quantum device is characterized directly through qubit and ga...
Quantum circuit synthesis of Bell and GHZ states using projective simulation in the NISQ era
O. Pires, E. I. Duzzioni, J. Marchi +1 more·Apr 27, 2021
Quantum Computing has been evolving in the last years. Although nowadays quantum algorithms performance has shown superior to their classical counterparts, quantum decoherence and additional auxiliary qubits needed for error tolerance routines have b...
Calculating the Green’s function of two-site fermionic Hubbard model in a photonic system
Jie Zhu, Yuya O. Nakagawa, Yong-Sheng Zhang +2 more·Apr 26, 2021
The Green’s function has been an indispensable tool to study many-body systems that remain one of the biggest challenges in modern quantum physics for decades. The complicated calculation of the Green’s function impedes the research of many-body syst...
Low Rank Approximation in Simulations of Quantum Algorithms
Linjian Ma, Chao Yang·Apr 23, 2021
Simulating quantum algorithms on classical computers is challenging when the system size, i.e., the number of qubits used in the quantum algorithm, is moderately large. However, some quantum algorithms and the corresponding quantum circuits can be si...
Model Checking for Verification of Quantum Circuits
M. Ying·Apr 23, 2021
In this talk, we will describe a framework for assertion-based verification (ABV) of quantum circuits by applying model checking techniques for quantum systems developed in our previous work, in which: (i) Noiseless and noisy quantum circuits are mod...
Single-Photon Emission from Individual Nanophotonic-Integrated Colloidal Quantum Dots
A. Eich, T. C. Spiekermann, H. Gehring +8 more·Apr 23, 2021
Solution processible colloidal quantum dots hold great promise for realizing single-photon sources embedded into scalable quantum technology platforms. However, the high-yield integration of large numbers of individually addressable colloidal quantum...
Tensor Network Quantum Virtual Machine for Simulating Quantum Circuits at Exascale
Thien Nguyen, Dmitry I. Lyakh, E. Dumitrescu +3 more·Apr 21, 2021
The numerical simulation of quantum circuits is an indispensable tool for development, verification, and validation of hybrid quantum-classical algorithms intended for near-term quantum co-processors. The emergence of exascale high-performance comput...
Quantum variational approach to lattice gauge theory at nonzero density
A. Yamamoto·Apr 21, 2021
The simulation of dense fermionic matters is a long-standing problem in lattice gauge theory. One hopeful solution would be the use of quantum computers. In this paper, digital quantum simulation is designed for lattice gauge theory at nonzero densit...
Fault-tolerant resource estimate for quantum chemical simulations: Case study on Li-ion battery electrolyte molecules
Isaac H. Kim, Ye-Hua Liu, Sam Pallister +3 more·Apr 21, 2021
We estimate the resources required in the fusion-based quantum computing scheme to simulate electrolyte molecules in Li-ion batteries on a fault-tolerant, photonic quantum computer. We focus on the molecules that can provide practical solutions to in...
Doubling the Size of Quantum Simulators by Entanglement Forging
A. Eddins, M. Motta, Tanvi P. Gujarati +4 more·Apr 20, 2021
Quantum computers are promising for simulations of chemical and physical systems, but the limited capabilities of today's quantum processors permit only small, and often approximate, simulations. Here we present a method, classical entanglement forgi...
Prospects for simulating a qudit-based model of (1+1)D scalar QED
Erik J. Gustafson·Apr 20, 2021
We present a gauge invariant digitization of $(1+1)$d scalar quantum electrodynamics for an arbitrary spin truncation for qudit-based quantum computers. We provide a construction of the Trotter operator in terms of a universal qudit-gate set. The cos...
Practical Quantum Error Correction with the XZZX Code and Kerr-Cat Qubits
A. Darmawan, Benjamin J. Brown, A. Grimsmo +2 more·Apr 19, 2021
The development of robust architectures capable of large-scale fault-tolerant quantum computation should consider both their quantum error-correcting codes and the underlying physical qubits upon which they are built, in tandem. Following this design...
Valley splittings in Si/SiGe quantum dots with a germanium spike in the silicon well
T. McJunkin, E. MacQuarrie, L. Tom +11 more·Apr 16, 2021
Silicon-germanium heterostructures have successfully hosted quantum dot qubits, but the intrinsic near-degeneracy of the two lowest valley states poses an obstacle to high fidelity quantum computing. We present a modification to the Si/SiGe heterostr...
Higgs analysis with quantum classifiers
Vasilis Belis, Samuel Gonz'alez-Castillo, C. Reissel +4 more·Apr 15, 2021
We have developed two quantum classifier models for the ttH classification problem, both of which fall into the category of hybrid quantumclassical algorithms for Noisy Intermediate Scale Quantum devices (NISQ). Our results, along with other studies,...
Improved Weak Simulation of Universal Quantum Circuits by Correlated $L_1$ Sampling
L. Kocia·Apr 15, 2021
Bounding the cost of classically simulating the outcomes of universal quantum circuits to additive error δ is often called weak simulation and is a direct way to determine when they confer a quantum advantage. Weak simulation of the T+Clifford gatese...
One decade of quantum optimal control in the chopped random basis
Matthias M. Müller, R. Said, F. Jelezko +2 more·Apr 15, 2021
The chopped random basis (CRAB) ansatz for quantum optimal control has been proven to be a versatile tool to enable quantum technology applications such as quantum computing, quantum simulation, quantum sensing, and quantum communication. Its capabil...
A quantum convolutional neural network on NISQ devices
Shijie Wei, Yanhu Chen, Zeng-rong Zhou +1 more·Apr 14, 2021
Quantum machine learning is one of the most promising applications of quantum computing in the noisy intermediate-scale quantum (NISQ) era. We propose a quantum convolutional neural network(QCNN) inspired by convolutional neural networks (CNN), which...
A Quantum Circuit Obfuscation Methodology for Security and Privacy
A. Suresh, Abdullah Ash-Saki, M. Alam +2 more·Apr 13, 2021
Optimization of quantum circuits using an efficient compiler is key to its success for NISQ computers. Several 3rd party compilers are evolving to offer improved performance for large quantum circuits. These 3rd parties, or just a certain release of ...