Junjie Liu

University of Oxford

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Arzhang Ardavan

University of Oxford

Stephen Hill

Florida State University

Paul Goddard

University of Warwick

John Singleton

National High Magnetic Field Laboratory

Jamie L. Manson

Eastern Washington University

Enrique del Barco

University of Central Florida

David N. Hendrickson

Broad Institute

Ge Yang

North Carolina State University

Zhengyang Bin

Sichuan University

Saul H. Lapidus

Argonne National Laboratory

Cooperative Institutions

University of Oxford

Chinese Academy of Sciences

Centre National de la Recherche Scientifique

Peking University

Florida State University

National High Magnetic Field Laboratory

University of Science and Technology of China

University of Chinese Academy of Sciences

Oxfam

Lawrence Berkeley National Laboratory

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CCDC 925065: Experimental Crystal Structure Determination

The Cambridge Structural Database (2013)

Saul H. Lapidus Jamie L. Manson Junjie Liu Matthew J. Smith Paul Goddard

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Crystal (programming language)

10.5517/cc101ltg

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Citations (0)

EPR and magnetic quantum tunneling studies of the mixed valent [Mn4(anca)4(Hedea)2(edea)2]·2CHCl3, EtOH single-molecule magnet

Polyhedron (2011)

Junjie Liu Christopher C. Beedle H. M. Quddusi Enrique del Barco David N. Hendrickson

Single-molecule magnet

10.1016/j.poly.2011.01.029

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Citations (6)

Effects of CeO2 on heat resistant performance of fluorosilicone rubber

Fuhe Cailiao Xuebao (2016)

Yong Guan Junjie Liu Zheng Anna Xu Xiang Pei Chen

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Citations (1)

Magnetization quantum tunneling and improper rotational symmetry

Polyhedron (2013)

Junjie Liu Stephen Hill

Hamiltonian (control theory)

Molecular symmetry

Quantum number

10.1016/j.poly.2013.03.018

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Citations (13)

Accidentally on purpose: construction of a ferromagnetic, oxime-based [MnIII2] dimer

Dalton Transactions (2011)

Ross Inglis Edel Houton Junjie Liu Alessandro Prescimone Joan Cano

The serendipitous self-assembly of the complex [MnIII2ZnII2(Ph-sao)2(Ph-saoH)4(hmp)2] (1),whose magnetic core consists solely of two symmetry equivalent Mn(III) ions linked by two symmetry equivalent –N–O– moieties, provides a relatively simple model complex with which to study the magneto-structural relationship in oxime-bridged Mn(III) cluster compounds. Dc magnetic susceptibility measurements reveal ferromagnetic (J = +2.2 cm−1) exchange resulting in an S = 4 ground state. Magnetisation measurements performed at low temperatures and high fields reveal the presence of significant anisotropy, with ac measurements confirming slow relaxation of the magnetisation and Single-Molecule Magnetism behaviour. Simulations of high field, high frequency EPR data reveal a single ion anisotropy, D(MnIII) = −3.83 cm−1. DFT studies on a simplified model complex of 1 reveal a pronounced dependence of the exchange coupling on the relative twisting of the oxime moiety with respect to the metal ion positions, as suggested previously in more complicated [MnIII3] and [MnIII6] clusters.

Moiety

Magnetism

10.1039/c1dt11118c

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Citations (16)

Persistent Currents in Toroidal Single-wall Carbon Nanotubes

Journal of Material Science and Technology (2009)

Junjie Liu Gang Zhang Bing-Lin Gu

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Application of Laser-induced Breakdown Spectroscopy in Soil Detection

Electro-Optic Technology Application (2012)

Junjie Liu

Laser-induced breakdown spectroscopy can be used to detect the effective content of heavy met al ions in soil.The basic principle of emission spectrum from excited plasma is summarized.And the experiment apparatus are designed.A semiconductor solid state laser is used as an excitation light source and a spectrometer is used as a receiver.The spectrum lines of metal ions in selected soil are obtained.Compared with spectrum line graphs of standard metal ions,the content of heavy metal ions in soil is obtained.Whether the soil is polluted or not is determined.The experiments prove that the method is feasible to be used in soil detection.

Laser-induced breakdown spectroscopy

Atomic emission spectroscopy

Soil test

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Strong Coupling of Microwave Photons to Antiferromagnetic Fluctuations in an Organic Magnet

Physical Review Letters (2017)

M. Mergenthaler Junjie Liu Jennifer J. Le Roy Natalia Ares Amber L. Thompson

Coupling between a crystal of di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium radicals and a superconducting microwave resonator is investigated in a circuit quantum electrodynamics (circuit QED) architecture. The crystal exhibits paramagnetic behavior above 4 K, with antiferromagnetic correlations appearing below this temperature, and we demonstrate strong coupling at base temperature. The magnetic resonance acquires a field angle dependence as the crystal is cooled down, indicating anisotropy of the exchange interactions. These results show that multispin modes in organic crystals are suitable for circuit QED, offering a platform for their coherent manipulation. They also utilize the circuit QED architecture as a way to probe spin correlations at low temperature.

Crystal (programming language)

Quantum fluctuation

10.1103/physrevlett.119.147701

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Citations (49)

Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions. Open data set

Zenodo (CERN European Organization for Nuclear Research) (2021)

Junjie Liu Jakub Mrożek Aman Ullah Yan Duan José J. Baldoví

Data supporting the related publication.

Nanomagnet

10.5281/zenodo.5167018

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Experimental realisation of multi-qubit gates using electron paramagnetic resonance

Nature Communications (2023)

Edmund Little Jacob Mrozek Ciarán J. Rogers Junjie Liu Eric J. L. McInnes

Quantum information processing promises to revolutionise computing; quantum algorithms have been discovered that address common tasks significantly more efficiently than their classical counterparts. For a physical system to be a viable quantum computer it must be possible to initialise its quantum state, to realise a set of universal quantum logic gates, including at least one multi-qubit gate, and to make measurements of qubit states. Molecular Electron Spin Qubits (MESQs) have been proposed to fulfil these criteria, as their bottom-up synthesis should facilitate tuning properties as desired and the reproducible production of multi-MESQ structures. Here we explore how to perform a two-qubit entangling gate on a multi-MESQ system, and how to readout the state via quantum state tomography. We propose methods of accomplishing both procedures using multifrequency pulse Electron Paramagnetic Resonance (EPR) and apply them to a model MESQ structure consisting of two nitroxide spin centres. Our results confirm the methodological principles and shed light on the experimental hurdles which must be overcome to realise a demonstration of controlled entanglement on this system.

Quantum sensor

Quantum Logic

Realisation

10.1038/s41467-023-42169-7

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Citations (5)