Dr Junjie Liu
Lecturer in Quantum Technology
School of Physical and Chemical Sciences
Queen Mary University of London
Queen Mary University of London
Research
Quantum technology, molecular nanomagnets, magnetic resonance, magnetoelectric
Interests
My research focuses on the physics of (sub)nanometer-scale quantum spin systems, such as molecular nanomagnets and semiconductor dopants, and their applications in spintronics. The aims are to investigate the interplay between spin and electrical/optical degrees of freedom within these quantum spin systems, and to identify novel strategies for quantum technology enabled by such interactions. I am also interested in exploring hyperfine-coupled nuclear moments as a qudits, physical systems offering a Hilbert space that is larger than 2 dimensional, as a hardware efficient approach for the implementation of fault-tolerant units for quantum information science.Publications
Publications of specific relevance to the Centre for Experimental and Applied Physics2023
Fault-tolerant qubit encoding using a spin-7/2 quditLim S, Liu J and Ardavan A
Physical Review A, American Physical Society (Aps) vol. 108 (6)
01-12-2023
Experimental realisation of multi-qubit gates using electron paramagnetic resonanceLittle EJ, Mrozek J, Rogers CJ, Liu J, McInnes EJL, Bowen AM, Ardavan A and Winpenny REP
Nature Communications, Springer Nature vol. 14 (1)
02-11-2023
Probing the Local Electronic Structure in Metal Halide Perovskites through Cobalt SubstitutionHaghighirad AA, Klug MT, Duffy L, Liu J, Ardavan A, van der Laan G, Hesjedal T and Snaith HJ
Small Methods, Wiley vol. 7 (6)
12-03-2023
2022
Inherent Spin–Polarization Coupling in a Magnetoelectric VortexDas S, Laguta V, Inzani K, Huang W, Liu J, Chatterjee R, McCarter MR, Susarla S, Ardavan A, Junquera J, Griffin SM and Ramesh R
Nano Letters, American Chemical Society (Acs) vol. 22 (10), 3976-3982.
13-05-2022
2021
Quantum coherent spin–electric control in a molecular nanomagnet at clock transitionsLiu J, Mrozek J, Ullah A, Duan Y, Baldoví JJ, Coronado E, Gaita-Ariño A and Ardavan A
Nature Physics, Springer Nature vol. 17 (11), 1205-1209.
14-10-2021
Coherent electric field manipulation of Fe3+ spins in PbTiO3Liu J, Laguta VV, Inzani K, Huang W, Das S, Chatterjee R, Sheridan E, Griffin SM, Ardavan A and Ramesh R
Science Advances, American Association For The Advancement of Science (Aaas) vol. 7 (10)
03-03-2021
2020
Spontaneous Rotation of Ferrimagnetism Driven by Antiferromagnetic Spin CantingVibhakar AM, Khalyavin DD, Manuel P, Liu J, Belik AA and Johnson RD
Physical Review Letters, American Physical Society (Aps) vol. 124 (12)
23-03-2020
2019
Unconventional Field-Induced Spin Gap in an S=1/2 Chiral Staggered ChainLiu J, Kittaka S, Johnson RD, Lancaster T, Singleton J, Sakakibara T, Kohama Y, van Tol J, Ardavan A, Williams BH, Blundell SJ, Manson ZE, Manson JL and Goddard PA
Physical Review Letters, American Physical Society (Aps) vol. 122 (5)
08-02-2019
Electric Field Control of Spins in Molecular MagnetsLiu J, Mrozek J, Myers WK, Timco GA, Winpenny REP, Kintzel B, Plass W and Ardavan A
Physical Review Letters, American Physical Society (Aps) vol. 122 (3)
25-01-2019
2018
Implications of bond disorder in a S=1 kagome latticeManson JL, Brambleby J, Goddard PA, Spurgeon PM, Villa JA, Liu J, Ghannadzadeh S, Foronda F, Singleton J, Lancaster T, Clark SJ, Thomas IO, Xiao F, Williams RC, Pratt FL, Blundell SJ, Topping CV, Baines C, Campana C and Noll B
Scientific Reports, Springer Nature vol. 8 (1)
16-03-2018
Endohedral Metallofullerene as Molecular High Spin Qubit: Diverse Rabi Cycles in Gd2@C79NHu Z, Dong B-W, Liu Z, Liu J-J, Su J, Yu C, Xiong J, Shi D-E, Wang Y, Wang B-W, Ardavan A, Shi Z, Jiang S-D and Gao S
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 140 (3), 1123-1130.
10-01-2018
Molecular electronic spin qubits from a spin-frustrated trinuclear copper complexKintzel B, Böhme M, Liu J, Burkhardt A, Mrozek J, Buchholz A, Ardavan A and Plass W
Chemical Communications, Royal Society of Chemistry (Rsc) vol. 54 (92), 12934-12937.
01-01-2018
2017
Strong Coupling of Microwave Photons to Antiferromagnetic Fluctuations in an Organic MagnetMergenthaler M, Liu J, Le Roy JJ, Ares N, Thompson AL, Bogani L, Luis F, Blundell SJ, Lancaster T, Ardavan A, Briggs GAD, Leek PJ and Laird EA
Physical Review Letters, American Physical Society (Aps) vol. 119 (14)
02-10-2017
Magneto-Structural Correlations in Pseudotetrahedral Forms of the [Co(SPh)4]2– Complex Probed by Magnetometry, MCD Spectroscopy, Advanced EPR Techniques, and ab Initio Electronic Structure CalculationsSuturina EA, Nehrkorn J, Zadrozny JM, Liu J, Atanasov M, Weyhermüller T, Maganas D, Hill S, Schnegg A, Bill E, Long JR and Neese F
Inorganic Chemistry, American Chemical Society (Acs) vol. 56 (5), 3102-3118.
22-02-2017
2016
Quantum Interference in Graphene NanoconstrictionsGehring P, Sadeghi H, Sangtarash S, Lau CS, Liu J, Ardavan A, Warner JH, Lambert CJ, Briggs GAD and Mol JA
Nano Letters vol. 16 (7), 4210-4216.
13-07-2016
Antiferromagnetism in a Family of S = 1 Square Lattice Coordination Polymers NiX2(pyz)2 (X = Cl, Br, I, NCS; pyz = Pyrazine)Liu J, Goddard PA, Singleton J, Brambleby J, Foronda F, Möller JS, Kohama Y, Ghannadzadeh S, Ardavan A, Blundell SJ, Lancaster T, Xiao F, Williams RC, Pratt FL, Baker PJ, Wierschem K, Lapidus SH, Stone KH, Stephens PW, Bendix J, et al.
Inorganic Chemistry, American Chemical Society (Acs) vol. 55 (7), 3515-3529.
22-03-2016
2015
Three-terminal graphene single-electron transistor fabricated using feedback-controlled electroburningPuczkarski P, Gehring P, Lau CS, Liu J, Ardavan A, Warner JH, Briggs GAD and Mol JA
Applied Physics Letters, Aip Publishing vol. 107 (13)
28-09-2015
2013
Single-crystal EPR spectroscopy of a Co(II) single-chain magnetAmjad A, Espallargas GM, Liu J, Clemente-Juan JM, Coronado E, Hill S and del Barco E
Polyhedron, Elsevier vol. 66, 218-221.
01-12-2013
Giant Ising-Type Magnetic Anisotropy in Trigonal Bipyramidal Ni(II) Complexes: Experiment and TheoryRuamps R, Maurice R, Batchelor L, Boggio-Pasqua M, Guillot R, Barra AL, Liu J, Bendeif E-E, Pillet S, Hill S, Mallah T and Guihéry N
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 135 (8), 3017-3026.
15-02-2013
Quantifying magnetic exchange in doubly-bridged Cu–X 2 –Cu (X = F, Cl, Br) chains enabled by solid state synthesis of CuF 2 (pyrazine)Lapidus SH, Manson JL, Liu J, Smith MJ, Goddard P, Bendix J, Topping CV, Singleton J, Dunmars C, Mitchell JF and Schlueter JA
Chemical Communications, Royal Society of Chemistry (Rsc) vol. 49 (34), 3558-3560.
01-01-2013
Synthetic, structural, spectroscopic and theoretical study of a Mn( iii )–Cu( ii ) dimer containing a Jahn–Teller compressed Mn ionBerg N, Hooper TN, Liu J, Beedle CC, Singh SK, Rajaraman G, Piligkos S, Hill S, Brechin EK and Jones LF
Dalton Transactions, Royal Society of Chemistry (Rsc) vol. 42 (1), 207-216.
01-01-2013
2012
Elucidating Magnetic Exchange and Anisotropy in Weakly Coupled MnIII DimersLiu J, Krzystek J, Hill S, Barrios L and Aromı́ G
Inorganic Chemistry, American Chemical Society (Acs) vol. 52 (2), 718-723.
28-12-2012
Slow Magnetic Relaxation Induced by a Large Transverse Zero-Field Splitting in a MnIIReIV(CN)2 Single-Chain MagnetFeng X, Liu J, Harris TD, Hill S and Long JR
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 134 (17), 7521-7529.
19-04-2012
Slow magnetic relaxation in a pseudotetrahedral cobalt( ii ) complex with easy-plane anisotropyZadrozny JM, Liu J, Piro NA, Chang CJ, Hill S and Long JR
Chemical Communications, Royal Society of Chemistry (Rsc) vol. 48 (33), 3927-3929.
01-01-2012
2011
Relieving frustration: The case of antiferromagnetic Mn3 molecular trianglesLiu J, Koo C, Amjad A, Feng PL, Choi E-S, del Barco E, Hendrickson DN and Hill S
Physical Review B, American Physical Society (Aps) vol. 84 (9)
01-09-2011
Cationic Mn4 Single-Molecule Magnet with a Sterically Isolated CoreHeroux KJ, Quddusi HM, Liu J, O’Brien JR, Nakano M, del Barco E, Hill S and Hendrickson DN
Inorganic Chemistry, American Chemical Society (Acs) vol. 50 (16), 7367-7369.
13-07-2011
Asymmetric Berry-Phase Interference Patterns in a Single-Molecule MagnetQuddusi HM, Liu J, Singh S, Heroux KJ, del Barco E, Hill S and Hendrickson DN
Physical Review Letters, American Physical Society (Aps) vol. 106 (22)
31-05-2011
Accidentally on purpose: construction of a ferromagnetic, oxime -based [Mn III 2 ] dimerInglis R, Houton E, Liu J, Prescimone A, Cano J, Piligkos S, Hill S, Jones LF and Brechin EK
Dalton Transactions, Royal Society of Chemistry (Rsc) vol. 40 (39), 9999-10006.
01-01-2011
2010
Magnetic quantum tunneling: insights from simple molecule-based magnetsHill S, Datta S, Liu J, Inglis R, Milios CJ, Feng PL, Henderson JJ, del Barco E, Brechin EK and Hendrickson DN
Dalton Transactions, Royal Society of Chemistry (Rsc) vol. 39 (20), 4693-4707.
01-01-2010
Grants
Grants of specific relevance to the Centre for Experimental and Applied PhysicsURF transfer: Coherent control of molecular spin qubits by electric fieldJunjie Liu
£213,902 Royal Society
01-04-2024 - 31-12-2025