TY - JOUR

T1 - Proof-of-Concept Quantum Simulator Based on Molecular Spin Qudits

AU - Chicco, Simone

AU - Allodi, Giuseppe

AU - Chiesa, Alessandro

AU - Garlatti, Elena

AU - Buch, Christian D.

AU - Santini, Paolo

AU - De Renzi, Roberto

AU - Piligkos, Stergios

AU - Carretta, Stefano

N1 - Funding Information: This work received financial support from the European Union─NextGenerationEU, PNRR MUR project PE0000023-NQSTI, from the European Union’s Horizon 2020 program under grant agreement no. 862893 (FET-OPEN project FATMOLS), from the Novo Nordisk foundation under grant NNF21OC0070832 in the call “Exploratory Interdisciplinary Synergy Programme 2021” and from Fondazione Cariparma. a Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.

PY - 2024

Y1 - 2024

N2 - The use of d-level qudits instead of two-level qubits can largely increase the power of quantum logic for many applications, ranging from quantum simulations to quantum error correction. Magnetic molecules are ideal spin systems to realize these large-dimensional qudits. Indeed, their Hamiltonian can be engineered to an unparalleled extent and can yield a spectrum with many low-energy states. In particular, in the past decade, intense theoretical, experimental, and synthesis efforts have been devoted to develop quantum simulators based on molecular qubits and qudits. However, this remarkable potential is practically unexpressed, because no quantum simulation has ever been experimentally demonstrated with these systems. Here, we show the first prototype quantum simulator based on an ensemble of molecular qudits and a radiofrequency broadband spectrometer. To demonstrate the operativity of the device, we have simulated quantum tunneling of the magnetization and the transverse-field Ising model, representative of two different classes of problems. These results represent an important step toward the actual use of molecular spin qudits in quantum technologies.

AB - The use of d-level qudits instead of two-level qubits can largely increase the power of quantum logic for many applications, ranging from quantum simulations to quantum error correction. Magnetic molecules are ideal spin systems to realize these large-dimensional qudits. Indeed, their Hamiltonian can be engineered to an unparalleled extent and can yield a spectrum with many low-energy states. In particular, in the past decade, intense theoretical, experimental, and synthesis efforts have been devoted to develop quantum simulators based on molecular qubits and qudits. However, this remarkable potential is practically unexpressed, because no quantum simulation has ever been experimentally demonstrated with these systems. Here, we show the first prototype quantum simulator based on an ensemble of molecular qudits and a radiofrequency broadband spectrometer. To demonstrate the operativity of the device, we have simulated quantum tunneling of the magnetization and the transverse-field Ising model, representative of two different classes of problems. These results represent an important step toward the actual use of molecular spin qudits in quantum technologies.

U2 - 10.1021/jacs.3c12008

DO - 10.1021/jacs.3c12008

M3 - Journal article

C2 - 38147824

AN - SCOPUS:85181564345

VL - 146

SP - 1053

EP - 1061

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 1

ER -