Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Nicholas J. Mayhall"'
Autor:
John S. Van Dyke, Karunya Shirali, George S. Barron, Nicholas J. Mayhall, Edwin Barnes, Sophia E. Economou
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p L012030 (2024)
Adaptive variational quantum simulation algorithms use information from a quantum computer to dynamically create optimal trial wave functions for a given problem Hamiltonian. A key ingredient in these algorithms is a predefined operator pool from whi
Externí odkaz:
https://doaj.org/article/d40cef3449f3451a9c214b0f31b9820b
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-8 (2023)
Abstract Variational quantum eigensolvers (VQEs) represent a powerful class of hybrid quantum-classical algorithms for computing molecular energies. Various numerical issues exist for these methods, however, including barren plateaus and large number
Externí odkaz:
https://doaj.org/article/659ec32feb26420381012dc4bc394145
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013254 (2024)
Adaptive quantum variational algorithms are particularly promising for simulating strongly correlated systems on near-term quantum hardware, but they are not yet viable due, in large part, to the severe coherence time limitations on current devices.
Externí odkaz:
https://doaj.org/article/e809049672934087b12ad5b3ff0d25d0
Autor:
Oinam Romesh Meitei, Bryan T. Gard, George S. Barron, David P. Pappas, Sophia E. Economou, Edwin Barnes, Nicholas J. Mayhall
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-11 (2021)
Abstract The variational quantum eigensolver is currently the flagship algorithm for solving electronic structure problems on near-term quantum computers. The algorithm involves implementing a sequence of parameterized gates on quantum hardware to ge
Externí odkaz:
https://doaj.org/article/ed031a80d25e4753873ffb3b3b7e51ac
Publikováno v:
Quantum, Vol 7, p 1040 (2023)
Quantum simulation of strongly correlated systems is potentially the most feasible useful application of near-term quantum computers. Minimizing quantum computational resources is crucial to achieving this goal. A promising class of algorithms for th
Externí odkaz:
https://doaj.org/article/7dd9d7928b3041228bea89f464c64b5d
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-1 (2023)
Externí odkaz:
https://doaj.org/article/1182513d99f64930832e17bca9417e17
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Quantum algorithms for simulating chemical systems are limited because of the a priori assumption about the form of the target wavefunction. Here the authors present a new variational hybrid quantum-classical algorithm which allows the system being s
Externí odkaz:
https://doaj.org/article/4313a2e79d9641b7820f2b8b41d58aeb
Autor:
Linghua Zhu, Ho Lun Tang, George S. Barron, F. A. Calderon-Vargas, Nicholas J. Mayhall, Edwin Barnes, Sophia E. Economou
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033029 (2022)
The quantum approximate optimization algorithm (QAOA) is a hybrid variational quantum-classical algorithm that solves combinatorial optimization problems. While there is evidence suggesting that the fixed form of the standard QAOA Ansatz is not optim
Externí odkaz:
https://doaj.org/article/cb86e4ebed704048952d4835c6cd6177
Publikováno v:
PRX Quantum, Vol 2, Iss 4, p 040329 (2021)
Several quantum many-body models in one dimension possess exact solutions via the Bethe ansatz method, which has been highly successful for understanding their behavior. Nevertheless, there remain physical properties of such models for which analytic
Externí odkaz:
https://doaj.org/article/d86bf60d16b444898f7254a1261d69bb
Autor:
Ho Lun Tang, V.O. Shkolnikov, George S. Barron, Harper R. Grimsley, Nicholas J. Mayhall, Edwin Barnes, Sophia E. Economou
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020310 (2021)
Quantum simulation, one of the most promising applications of a quantum computer, is currently being explored intensely using the variational quantum eigensolver. The feasibility and performance of this algorithm depend critically on the form of the
Externí odkaz:
https://doaj.org/article/09468fa5697d455eb3a36d7fffdb9e3e