Doubling the Size of Quantum Simulators by Entanglement Forging
TLDR
In this paper , the authors presented a method, classical entanglement forging, that harnesses classical resources to capture quantum correlations and double the size of the system that can be simulated on quantum hardware.Abstract:
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 forging, that harnesses classical resources to capture quantum correlations and double the size of the system that can be simulated on quantum hardware. Shifting some of the computation to classical post-processing allows us to represent ten spin-orbitals on five qubits of an IBM Quantum processor to compute the ground state energy of the water molecule in the most accurate simulation to date. We discuss conditions for applicability of classical entanglement forging and present a roadmap for scaling to larger problems. read more
Citations
More filters
Journal ArticleDOI
The future of quantum computing with superconducting qubits
TL;DR: Hardware that exploits qubit connectivity in higher than 2D topologies to realize more efficient quantum error correcting codes, modular architectures for scaling QPUs and parallelizing workloads, and software that evolves to make the intricacies of the technology invisible to the users and realize the goal of ubiquitous, frictionless quantum computing are seen.
Journal ArticleDOI
Measurements as a roadblock to near-term practical quantum advantage in chemistry: Resource analysis
TL;DR: In this article , the number of qubits and number of measurements required to compute the combustion energies of small organic molecules and related systems to within chemical accuracy of experimental values using VQE were investigated.
Journal ArticleDOI
Hybrid quantum-classical algorithms in the noisy intermediate-scale quantum era and beyond
TL;DR: Hybrid quantum-classical algorithms are central to much of the current research in quantum computing, particularly when considering the noisy intermediate-scale quantum (NISQ) era, with a number of experimental demonstrations having already been performed as mentioned in this paper .
Journal ArticleDOI
Challenges and opportunities in quantum machine learning for high-energy physics
Sau-Lan Wu,Shinjae Yoo +1 more
TL;DR: In this article , Wu and Yoo describe how the potential of these tools is starting to be tested and what has been understood thus far, and how to use them for data analysis in high-energy physics.
Posted Content
Quantum simulations of molecular systems with intrinsic atomic orbitals
TL;DR: In this article, the authors explore the use of intrinsic atomic orbitals (IAOs) in quantum simulations of molecules, to improve the accuracy of energies and properties at the same computational cost required by a minimal basis.
References
More filters
Journal ArticleDOI
A variational eigenvalue solver on a photonic quantum processor
Alberto Peruzzo,Jarrod R. McClean,Peter Shadbolt,Man-Hong Yung,Xiao-Qi Zhou,Peter J. Love,Alán Aspuru-Guzik,Jeremy L. O'Brien +7 more
TL;DR: The proposed approach drastically reduces the coherence time requirements and combines this method with a new approach to state preparation based on ansätze and classical optimization, enhancing the potential of quantum resources available today and in the near future.
Journal ArticleDOI
The density-matrix renormalization group in the age of matrix product states
TL;DR: The density matrix renormalization group method (DMRG) has established itself over the last decade as the leading method for the simulation of the statics and dynamics of one-dimensional strongly correlated quantum lattice systems as mentioned in this paper.
Journal ArticleDOI
Hardware-efficient variational quantum eigensolver for small molecules and quantum magnets
Abhinav Kandala,Antonio Mezzacapo,Kristan Temme,Maika Takita,Markus Brink,Jerry M. Chow,Jay M. Gambetta +6 more
TL;DR: The experimental optimization of Hamiltonian problems with up to six qubits and more than one hundred Pauli terms is demonstrated, determining the ground-state energy for molecules of increasing size, up to BeH2.
Journal ArticleDOI
Colloquium: Area laws for the entanglement entropy
TL;DR: In this paper, the current status of area laws in quantum many-body systems is reviewed and a significant proportion is devoted to the clear and quantitative connection between the entanglement content of states and the possibility of their efficient numerical simulation.
Journal ArticleDOI
Electronic structure calculations with dynamical mean-field theory
Gabriel Kotliar,Sergey Y. Savrasov,Kristjan Haule,V. S. Oudovenko,Olivier Parcollet,Chris A. Marianetti +5 more
TL;DR: In this article, a review of the basic ideas and techniques of spectral density functional theory which are currently used in electronic structure calculations of strongly correlated materials where the one-dimensional electron description breaks down is presented.