Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Purification-based quantum error mitigation of pair-correlated electron simulations
T. O’Brien, G. Anselmetti, F. Gkritsis +173 more·Oct 19, 2022
An important measure of the development of quantum computing platforms has been the simulation of increasingly complex physical systems. Before fault-tolerant quantum computing, robust error-mitigation strategies were necessary to continue this growt...
A quantum analytical Adam descent through parameter shift rule using Qibo
Matteo Robbiati, Stavros Efthymiou, Andrea Pasquale +1 more·Oct 19, 2022
In this proceedings we present quantum machine learning optimization experiments using stochastic gradient descent with the parameter shift rule algorithm. We first describe the gradient evaluation algorithm and its optimization procedure implemented...
Non-Hermitian ground-state-searching algorithm enhanced by a variational toolbox
Yu-Qin Chen, Shi-Xin Zhang, Chang-Yu Hsieh +1 more·Oct 17, 2022
Ground-state preparation for a given Hamiltonian is a common quantum-computing task of great importance and has relevant applications in quantum chemistry, computational material modeling, and combinatorial optimization. We consider an approach to si...
A quantum algorithm for the linear response of nuclei
Abhishek, Nifeeya Singh, P. Siwach +1 more·Oct 17, 2022
We present a quantum algorithm to obtain the response of the atomic nucleus to a small external electromagnetic perturbation. For the first time, such an algorithm is implemented on quantum computers to obtain the Giant Dipole Resonance cross-section...
A modular quantum-classical framework for simulating chemical reaction pathways accurately
R. NirmalM., Shampa Sarkar, M. Nambiar +1 more·Oct 17, 2022
A lot of progress has been made in recent times for simulating accurately the ground state energy of small molecules and their potential energy surface, using quantum-classical hybrid computing architecture. While these single point energy calculatio...
Error-correcting codes for fermionic quantum simulation
Yu-An Chen, A. Gorshkov, Yijia Xu·Oct 16, 2022
Utilizing the framework of \mathbb{Z}_2ℤ2 lattice gauge theories in the context of Pauli stabilizer codes, we present methodologies for simulating fermions via qubit systems on a two-dimensional square lattice. We investigate the symplectic automorph...
Quantifying Quantum Computational Advantage on a Processor of Ultracold Atoms
Yong-Guang Zheng, Ying-Chao Shen, Wei-Yong Zhang +15 more·Oct 16, 2022
Nonequilibrium dynamics of quantum many-body systems is challenging for classical computing, providing opportunities for demonstrating practical quantum computational advantage with analogue quantum simulators. Owing to the intimate connection with a...
Quantum Fourier Transform Has Small Entanglement
Jielun Chen, E. Stoudenmire, S. White·Oct 16, 2022
The Quantum Fourier Transform (QFT) is a key component of many important quantum algorithms, most famously as being the essential ingredient in Shor's algorithm for factoring products of primes. Given its remarkable capability, one would think it can...
Multi-Neutrino Entanglement and Correlations in Dense Neutrino Systems.
Marc Illa, M. Savage·Oct 16, 2022
The time evolution of multi-neutrino entanglement and correlations are studied in two-flavor collective neutrino oscillations, relevant for dense neutrino environments, building upon previous works. Specifically, simulations performed of systems with...
Simulating dirty bosons on a quantum computer
Lindsay Bassman Oftelie, Roel Van Beeumen, Daan Camps +2 more·Oct 15, 2022
Quantum computers hold the potential to unlock new discoveries in complex quantum systems by enabling the simulation of physical systems that have heretofore been impossible to implement on classical computers due to intractability. A system of parti...
Variational Quantum Algorithms for Chemical Simulation and Drug Discovery
Hasan Mustafa, Sai Nandan Morapakula, Prateek Jain +1 more·Oct 13, 2022
Quantum computing has gained a lot of attention recently, and scientists have seen potential applications in this field using quantum computing for Cryptography and Communication to Machine Learning and Healthcare. Protein folding has been one of the...
Stochastic noise can be helpful for variational quantum algorithms
Junyu Liu, Frederik Wilde, A. A. Mele +3 more·Oct 13, 2022
Saddle points constitute a crucial challenge for first-order gradient descent algorithms. In notions of classical machine learning, they are avoided, for example, by means of stochastic gradient descent methods. In this work, we provide evidence that...
Post-Quantum Zero-Knowledge with Space-Bounded Simulation
P. Ananth, A. Grilo·Oct 12, 2022
The traditional definition of quantum zero-knowledge stipulates that the knowledge gained by any quantum polynomial-time verifier in an interactive protocol can be simulated by a quantum polynomial-time algorithm. One drawback of this definition is t...
Autoregressive neural Slater-Jastrow ansatz for variational Monte Carlo simulation
S. Humeniuk, Y. Wan, Lei Wang·Oct 12, 2022
Direct sampling from a Slater determinant is combined with an autoregressive deep neural network as a Jastrow factor into a fully autoregressive Slater-Jastrow ansatz for variational quantum Monte Carlo, which allows for uncorrelated sampling. The el...
Efficient Hamiltonian Reduction for Quantum Annealing on SatCom Beam Placement Problem
T. Dinh, Son Hoang Dau, Eva Lagunas +1 more·Oct 12, 2022
Beam Placement (BP) is a well-known problem in Low-Earth Orbit (LEO) satellite communication (SatCom) systems, which can be modelled as an NP-hard clique cover problem. Recently, quantum computing has emerged as a novel technology which revolutionize...
Quantum walks on random lattices: Diffusion, localization, and the absence of parametric quantum speedup
Rostislav Duda, Moein N. Ivaki, I. Sahlberg +2 more·Oct 11, 2022
Discrete-time quantum walks, quantum generalizations of classical random walks, provide a framework for quantum information processing, quantum algorithms and quantum simulation of condensed matter systems. The key property of quantum walks, which li...
CNOT-Efficient Circuits for Arbitrary Rank Many-Body Fermionic and Qubit Excitations.
I. Magoulas, Francesco A. Evangelista·Oct 11, 2022
Efficient quantum circuits are necessary for realizing quantum algorithms on noisy intermediate-scale quantum devices. Fermionic excitations entering unitary coupled-cluster (UCC) ansätze give rise to quantum circuits containing CNOT "staircases" who...
Real-time frequency estimation of a qubit without single-shot-readout
Inbar Zohar, B. Haylock, Y. Romach +8 more·Oct 11, 2022
Quantum sensors can potentially achieve the Heisenberg limit of sensitivity over a large dynamic range using quantum algorithms. The adaptive phase estimation algorithm (PEA) is one example that was proven to achieve such high sensitivities with sing...
Superresolution of Green's functions on noisy quantum computers
Diogo Cruz, Duarte Magano·Oct 10, 2022
Quantum computers, using efficient Hamiltonian evolution routines, have the potential to simulate Green's functions of classically-intractable quantum systems. However, the decoherence errors of near-term quantum processors prohibit large evolution t...
Potential Applications of Quantum Computing for the Insurance Industry
M. Adam·Oct 10, 2022
This paper is the documentation of a pre-study performed by AXA Konzern AG in collaboration with Fraunhofer ITWM to assess the relevance of quantum computing for the insurance industry. Beside a general overview of the status quo of quantum computing...