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Title: Molecular nanomagnets with switchable coupling for quantum simulation

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep07423· OSTI ID:1256047
 [1];  [2];  [3];  [2];  [2];  [4];  [3];  [5];  [2];  [3]
  1. Univ. of Parma (Italy); Forschungszentrum Julich (Germany)
  2. Univ. of Manchester (United Kingdom)
  3. Univ. of Parma (Italy)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  5. Forschungszentrum Julich (Germany); JARA High-Performance Computing (Germany)
+ Show Author Affiliations

Molecular nanomagnets are attractive candidate qubits because of their wide inter- and intra-molecular tunability. Uniform magnetic pulses could be exploited to implement one- and two-qubit gates in presence of a properly engineered pattern of interactions, but the synthesis of suitable and potentially scalable supramolecular complexes has proven a very hard task. Indeed, no quantum algorithms have ever been implemented, not even a proof-of-principle two-qubit gate. In this paper we show that the magnetic couplings in two supramolecular {Cr7Ni}-Ni-{Cr7Ni} assemblies can be chemically engineered to fit the above requisites for conditional gates with no need of local control. Microscopic parameters are determined by a recently developed many-body ab-initio approach and used to simulate quantum gates. We find that these systems are optimal for proof-of-principle two-qubit experiments and can be exploited as building blocks of scalable architectures for quantum simulation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1256047
Journal Information:
Scientific Reports, Vol. 4; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 49 works
Citation information provided by
Web of Science

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Cited By (16)

Hybrid Organic-Inorganic Rotaxanes, Including a Hetero-Hybrid [3]Rotaxane Featuring Two Distinct Heterometallic Rings and a Molecular Shuttle journal July 2018
Studies of a Large Odd-Numbered Odd-Electron Metal Ring: Inelastic Neutron Scattering and Muon Spin Relaxation Spectroscopy of Cr 8 Mn journal January 2016
Unravelling the Spin Dynamics of Molecular Nanomagnets with Four-Dimensional Inelastic Neutron Scattering: Unravelling the Spin Dynamics of Molecular Nanomagnets with Four-Dimensional Inelastic Neutron Scattering journal January 2019
A modular design of molecular qubits to implement universal quantum gates journal April 2016
Portraying entanglement between molecular qubits with four-dimensional inelastic neutron scattering journal February 2017
Synthesis and reactions of N-heterocycle functionalised variants of heterometallic {Cr 7 Ni} rings journal January 2016
Low temperature magnetic properties and spin dynamics in single crystals of Cr 8 Zn antiferromagnetic molecular rings journal December 2015
Superconducting qubit circuit emulation of a vector spin-1/2 journal July 2019
Robust multipartite entanglement generation via a collision model journal January 2019
Relaxation dynamics in the frustrated Cr 9 antiferromagnetic ring probed by NMR journal January 2016
First-principles many-body models for electron transport through molecular nanomagnets journal June 2019
A Clock Transition in the Cr7Mn Molecular Nanomagnet journal January 2019
Series of Chloranilate-Bridged Dinuclear Lanthanide Complexes: Kramers Systems Showing Field-Induced Slow Magnetic Relaxation journal May 2019
Hybrid Organic-Inorganic Rotaxanes, Including a Hetero-Hybrid [3]Rotaxane Featuring Two Distinct Heterometallic Rings and a Molecular Shuttle journal July 2018
First-principles many-body models for electron transport through molecular nanomagnets text January 2019
Unravelling the Spin Dynamics of Molecular Nanomagnets with Four-Dimensional Inelastic Neutron Scattering text January 2021

Linked Research (5)

Figures / Tables (10)

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Table 3(p. 6)table Table 3
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