Studies of decoherence in strongly anisotropic spin triangles with toroidal or general noncollinear easy axes

Article Chemistry, Multidisciplinary

Toroidal versus centripetal arrangement of the magnetic moment in a Dy4 tetrahedron

Qianqian Yang et al.

Summary: This study reveals a toroidal arrangement of the magnetic moment in a tetrahedral Dy-4 complex, rather than centripetal anisotropies.

CHEMICAL COMMUNICATIONS (2022)

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Editorial Material Chemistry, Multidisciplinary

Molecular spins clock in

Eric J. L. McInnes

Summary: Electron spin relaxation, important in quantum information science, can be slowed down at clock transitions. Recent research has demonstrated that the clock transitions can be tuned to high frequency in rare-earth coordination complexes through control of s- and d-orbital mixing.

NATURE CHEMISTRY (2022)

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Article Chemistry, Multidisciplinary

A 9.2-GHz clock transition in a Lu(II) molecular spin qubit arising from a 3,467-MHz hyperfine interaction

Krishnendu Kundu et al.

Summary: By controlling the degree of s-orbital mixing in molecules, a large spin hyperfine interaction can be achieved, leading to a 9 GHz clock transition and increased phase memory time. These findings suggest new strategies for the development of molecular quantum technologies.

NATURE CHEMISTRY (2022)

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Article Chemistry, Inorganic & Nuclear

The Role of Magnetic Dipole-Dipole Coupling in Quantum Single-Molecule Toroics

Kieran Hymas et al.

Summary: The study demonstrates that intramolecular magnetic dipole-dipole coupling, in combination with noncollinear exchange, helps to maintain the ground-state toroidicity in a prototype triangular SMT with strong on-site magnetic anisotropy. Additionally, the research investigates the quantum tunneling effect of the toroidal moment in both Kramers and non-Kramers systems. In the weak anisotropy limit, it is found that within certain critical ion-ion distances, intramolecular magnetic dipole-dipole interactions, diagonalized over the entire Hilbert space of the quantum system, can restore ground-state toroidicity in both ferromagnetic and antiferromagnetic odd-membered rings with up to seven sites, further stabilized by Dzyaloshinskii-Moriya coupling.

MAGNETOCHEMISTRY (2022)

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Article Chemistry, Physical

Theoretical Design of Optimal Molecular Qudits for Quantum Error Correction

A. Chiesa et al.

Summary: In this study, we identified the key factors affecting decoherence in multispin clusters and designed optimal molecules embedded with quantum error correction. By optimizing the error correction code, we significantly enhanced the power of quantum error correction, resulting in a dramatic suppression of decoherence in the system. Through a complete simulation of system dynamics, we demonstrated the effectiveness of this approach.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Physical

Quantum error correction with molecular spin qudits

Mario Chizzini et al.

Summary: Molecular spin systems are a promising platform for quantum computing due to their ability to be manipulated coherently at many levels. This study compares the implementation of a spin qudit-based code on different molecules, showing that pulse-shaping techniques can improve the effective phase memory time and reduce decoherence. The simulation also demonstrates the implementation of single-qubit operations on encoded states.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

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Article Chemistry, Inorganic & Nuclear

Tuning the Ferrotoroidic Coupling and Magnetic Hysteresis in Double-Triangle Complexes {Dy3MIIIDy3} via the MIII-linker

Jared M. Ashtree et al.

Summary: The study focuses on two families of heptanuclear clusters, where two staggered dysprosium(III) triangles are linked by different M(III) d-/p-block ions, showing that varying the central metal ion M is crucial in tuning the toroidal moments on the triangular units. The use of diamagnetic M linking ions enhances the ferrotoroidic coupling, leading to specific modulation of toroidal properties.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2021)

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Article Physics, Multidisciplinary

Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions

Junjie Liu et al.

Summary: Electric control of spins at the nanoscale offers advantages in spintronics by confining electric fields over shorter lengths than magnetic fields. By identifying an energy scale in the spin spectrum associated with a structure with substantial electrical polarizability, stronger spin-electric couplings can be designed. This study demonstrates coherent electrical control of quantum spin state, paving the way for using molecular spins in quantum technologies and spintronics.

NATURE PHYSICS (2021)

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Article Physics, Applied

A perspective on scaling up quantum computation with molecular spins

S. Carretta et al.

Summary: Artificial magnetic molecules show potential in advancing large scale quantum computation by reducing computational costs and integrating multiple quantum resources. Through chemical design and coupling of multiple molecules, the concept of macroscopic quantum processors can be realized.

APPLIED PHYSICS LETTERS (2021)

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Article Physics, Multidisciplinary

Observation of phase synchronization and alignment during free induction decay of quantum spins with Heisenberg interactions

Patrick Vorndamme et al.

Summary: The study observed that in closed quantum systems, both integrable and non-integrable spin rings with various types of spin interactions can synchronize the directions of spin expectation values, which differs from synchronization in quantum dissipative systems. Although the phenomenon is not fully understood, it remains robust against random fluctuations of Heisenberg couplings and inhomogeneous magnetic fields.

NEW JOURNAL OF PHYSICS (2021)

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Article Quantum Science & Technology

Counteracting dephasing in Molecular Nanomagnets by optimized qudit encodings

F. Petiziol et al.

Summary: This study explores the application of Molecular Nanomagnets in quantum error correction codes, investigating the error sources in quantum information encoded in molecular qudits and the development of quantum error correction strategies. It is found that by eliminating the interference of nuclear spins on molecular spins, the coherence time of the molecular computational unit can be significantly improved.

NPJ QUANTUM INFORMATION (2021)

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Article Chemistry, Physical

Decoherence in Molecular Electron Spin Qubits: Insights from Quantum Many-Body Simulations

Jia Chen et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Chemistry, Physical

Quantitative Structure-Based Prediction of Electron Spin Decoherence in Organic Radicals

Elizabeth R. Canarie et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2020)

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Article Physics, Condensed Matter

Toroidal moment in a family of spin-frustrated heterometallic triangular nanomagnets without spin-orbit coupling: Applications in a molecular spintronics device

S.V. Rao et al.

PHYSICA B-CONDENSED MATTER (2020)

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Article Materials Science, Multidisciplinary

Single -Molecule Toroic Design through Magnetic Exchange Coupling

Hao-Lan Zhang et al.

MATTER (2020)

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Article Physics, Multidisciplinary

Constructing clock-transition-based two-qubit gates from dimers of molecular nanomagnets

Charles A. Collett et al.

PHYSICAL REVIEW RESEARCH (2020)

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Article Materials Science, Multidisciplinary

Toroidal spin states in molecular magnets

Y. Pavlyukh

PHYSICAL REVIEW B (2020)

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Article Materials Science, Multidisciplinary

Decoherence of a singlet-triplet superposition state under dipolar interactions of an uncorrelated environment

Patrick Vorndamme et al.

PHYSICAL REVIEW B (2020)

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Article Chemistry, Multidisciplinary

Molecular spins for quantum computation

A. Gaita-Arino et al.

NATURE CHEMISTRY (2019)

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Review Chemistry, Multidisciplinary

The Second Quantum Revolution: Role and Challenges of Molecular Chemistry

Matteo Atzori et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

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Article Chemistry, Inorganic & Nuclear

New examples of triangular terbium(iii) and holmium(iii) and hexagonal dysprosium(iii) single molecule toroics

Stuart K. Langley et al.

DALTON TRANSACTIONS (2019)

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Article Chemistry, Multidisciplinary

A Dy4 Cubane: A New Member in the Single-Molecule Toroics Family

Guglielmo Fernandez Garcia et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

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Article Multidisciplinary Sciences

Enhanced quantum coherence in exchange coupled spins via singlet-triplet transitions

Y. Bae et al.

SCIENCE ADVANCES (2018)

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Article Materials Science, Multidisciplinary

Toroidal quantum states in molecular spin-frustrated triangular nanomagnets with weak spin-orbit coupling: Applications to molecular spintronics

Jared M. Crabtree et al.

PHYSICAL REVIEW B (2018)

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Article Chemistry, Multidisciplinary

Slow Magnetic Relaxation and Single-Molecule Toroidal Behaviour in a Family of Heptanuclear {Cr(III)Ln(6)(III)} (Ln=Tb, Ho, Er) Complexes

Kuduva R. Vignesh et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

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Article Physics, Multidisciplinary

Operating Quantum States in Single Magnetic Molecules: Implementation of Grover's Quantum Algorithm

C. Godfrin et al.

PHYSICAL REVIEW LETTERS (2017)

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Article Multidisciplinary Sciences

Ferrotoroidic ground state in a heterometallic {CrIIIDyIII6} complex displaying slow magnetic relaxation

Kuduva R. Vignesh et al.

NATURE COMMUNICATIONS (2017)

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Article Physics, Multidisciplinary

Model dynamics for quantum computing

Frank Tabakin

ANNALS OF PHYSICS (2017)

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Article Multidisciplinary Sciences

Enhancing coherence in molecular spin qubits via atomic clock transitions

Muhandis Shiddiq et al.

NATURE (2016)

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Article Multidisciplinary Sciences

A modular design of molecular qubits to implement universal quantum gates

Jesus Ferrando-Soria et al.

NATURE COMMUNICATIONS (2016)

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Article Chemistry, Multidisciplinary

Single-Molecule Magnetism, Enhanced Magnetocaloric Effect, and Toroidal Magnetic Moments in a Family of Ln4 Squares

Chinmoy Das et al.

CHEMISTRY-A EUROPEAN JOURNAL (2015)

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Article Multidisciplinary Sciences

Electron paramagnetic resonance of individual atoms on a surface

Susanne Baumann et al.

SCIENCE (2015)

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Review Chemistry, Multidisciplinary

Single-molecule toroics in Ising-type lanthanide molecular clusters

Liviu Ungur et al.

CHEMICAL SOCIETY REVIEWS (2014)

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Article Materials Science, Multidisciplinary

Quantum spin coherence in halogen-modified Cr7Ni molecular nanomagnets

Danielle Kaminski et al.

PHYSICAL REVIEW B (2014)

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Article Nanoscience & Nanotechnology

Atomic clock transitions in silicon-based spin qubits

Gary Wolfowicz et al.

NATURE NANOTECHNOLOGY (2013)

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Article Chemistry, Inorganic & Nuclear

The First {Dy4} Single-Molecule Magnet with a Toroidal Magnetic Moment in the Ground State

Peng-Hu Guo et al.

INORGANIC CHEMISTRY (2012)

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Article Chemistry, Inorganic & Nuclear

Two Bulky-Decorated Triangular Dysprosium Aggregates Conserving Vortex-Spin Structure

Shufang Xue et al.

INORGANIC CHEMISTRY (2012)

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Article Chemistry, Multidisciplinary

Net Toroidal Magnetic Moment in the Ground State of a {Dy6}-Triethanolamine Ring

Liviu Ungur et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

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Article Materials Science, Multidisciplinary

Hyperfine-induced decoherence in triangular spin-cluster qubits

Filippo Troiani et al.

PHYSICAL REVIEW B (2012)

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Article Chemistry, Multidisciplinary

A single-molecule magnet assembly exhibiting a dielectric transition at 470 K

Yu-Xia Wang et al.

CHEMICAL SCIENCE (2012)

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Article Multidisciplinary Sciences

Decoherence in crystals of quantum molecular magnets

S. Takahashi et al.

NATURE (2011)

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Article Materials Science, Multidisciplinary

Molecular spintronics using noncollinear magnetic molecules

Alessandro Soncini et al.

PHYSICAL REVIEW B (2010)

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Article Chemistry, Multidisciplinary

The origin of nonmagnetic Kramers doublets in the ground state of dysprosium triangles: Evidence for a toroidal magnetic moment

Liviu F. Chibotaru et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2008)

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Article Physics, Condensed Matter

The toroidal moment in condensed-matter physics and its relation to the magnetoelectric effect

Nicola A. Spaldin et al.

JOURNAL OF PHYSICS-CONDENSED MATTER (2008)

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Article Materials Science, Multidisciplinary

Toroidal magnetic states in molecular wheels: Interplay between isotropic exchange interactions and local magnetic anisotropy

Alessandro Soncini et al.

PHYSICAL REVIEW B (2008)

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Article Multidisciplinary Sciences

Observation of ferrotoroidic domains

Bas B. Van Aken et al.

NATURE (2007)

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Article Physics, Multidisciplinary

Will spin-relaxation times in molecular magnets permit quantum information processing?

Arzhang Ardavan et al.

PHYSICAL REVIEW LETTERS (2007)

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Article Physics, Multidisciplinary

Pairwise decoherence in coupled spin qubit networks

Andrea Morello et al.

PHYSICAL REVIEW LETTERS (2006)

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Article Chemistry, Multidisciplinary

Dysprosium triangles showing single-molecule magnet behavior of thermally excited spin states

JK Tang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2006)

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Review Physics, Multidisciplinary

Theory of the spin bath

NV Prokof'ev et al.

REPORTS ON PROGRESS IN PHYSICS (2000)

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Studies of decoherence in strongly anisotropic spin triangles with toroidal or general noncollinear easy axes

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