Artículo
Digital-analog quantum computation with arbitrary two-body Hamiltonians
Autor/es | García de Andoin, Mikel
Saiz Castillo, Álvaro Pérez Fernández, Pedro Lamata Manuel, Lucas Oregi, Izaskun Sanz, Mikel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada III |
Fecha de publicación | 2024-03-14 |
Fecha de depósito | 2024-03-19 |
Publicado en |
|
Resumen | Digital-analog quantum computing is a computational paradigm which employs an analog Hamiltonian resource together with single-qubit gates to reach universality. Here, we design a new scheme which employs an arbitrary ... Digital-analog quantum computing is a computational paradigm which employs an analog Hamiltonian resource together with single-qubit gates to reach universality. Here, we design a new scheme which employs an arbitrary two-body source Hamiltonian, extending the experimental applicability of this computational paradigm to most quantum platforms. We show that the simulation of an arbitrary two-body target Hamiltonian of n qubits requires O(n2) analog blocks with guaranteed positive times, providing a polynomial advantage compared to the previous scheme. Additionally, we propose a classical strategy which combines a Bayesian optimization with a gradient descent method, improving the performance by ∼55% for small systems measured in the Frobenius norm. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Agencia Estatal de Investigación. España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Junta de Andalucía Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | PID2019-104002GB-C21
PID2019-104002GB-C22 PID2022-136228NB-C21 PID2022-136228NB-C22 US-1380840 P20_01247 P20_00617 UNHU-15CE-2848 PID2021-125823NAI00 |
Cita | García de Andoin, M., Saiz Castillo, Á., Pérez Fernández, P., Lamata Manuel, L., Oregi, I. y Sanz, M. (2024). Digital-analog quantum computation with arbitrary two-body Hamiltonians. Physical Review Research, 6 (1), 013280. https://doi.org/10.1103/physrevresearch.6.013280. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
PhysRevResearch.6.013280.pdf | 615.4Kb | [PDF] | Ver/ | |