Brendon Lovett

Brendon William Lovett

Postal address:
School of Physics & Astronomy
Physical Science Building
North Haugh
St Andrews
United Kingdom

E-mail: bwl4@st-andrews.ac.uk

Direct phone: +44 (0)1334 463107

Research overview

Brendon Lovett is a Royal Society University Research Fellow and Proleptic Reader in the School of Physics and Astronomy at the University of St Andrews.

Dr Lovett is a theoretical physicist whose aim is to understand the quantum properties of nanomaterials. His work has applications ranging from quantum information processing to solar energy harvesting.

He works closely with experimental groups on the design and realization of architectures quantum computing, quantum metrology and quantum memory. His work is generally concerned with solid state or molecular systems, examples including semiconductor quantum dots, fullerenes and defects in crystals. He is particularly interested in optical control of electronic states in these materials, and co-wrote a 2010 book on the topic entitled “Introduction to Optical Quantum Information Processing”.

Energy harvesting in photovoltaic cells relies on the creation and transport of electronic excitations in molecules or semiconductors. Lovett’s group uses quantum theory to understand how this process can be understood and optimized for efficient conversion of sunlight into electrical energy.

Nearly all this work relies on understanding quantum systems that interact with an environment, whose properties can only be described incompletely. Lovett and his group therefore use and develop the theory of open quantum systems, and exploit it for practical problems.

The research is funded through grants from the ESPRC, Leverhulme Trust and DARPA, held jointly with groups from the Universities of Oxford, Cambridge, Southampton, Heriot-Watt University, UCL and the University of Princeton.

Recent Publications

Quantum-enhanced capture of photons using optical ratchet states
Higgins, K., Lovett, B. W. & Gauger, E. 28 Sep 2017 In : Journal of Physical Chemistry C. 121, 38, p. 20714–20719
Research output: Contribution to journalArticle

Efficient real-time path integrals for non-Markovian spin-boson models
Strathearn, A., Kirton, P. G. & Lovett, B. W. Sep 2017 In : New Journal of Physics. 19, 14 p., 093009
Research output: Contribution to journalArticle

Microwave irradiation and quasiparticles in a superconducting double dot
Lambert, N. J., Esmail, A. A., Pollock, F. A., Edwards, M., Lovett, B. W. & Ferguson, A. J. 15 Jun 2017 In : Physical Review. B, Condensed matter and materials physics. 95, 23, 10 p., 235413
Research output: Contribution to journalArticle

Sub-Doppler laser cooling of 40K with Raman gray molasses on the D2 line
Bruce, G. D., Haller, E., Peaudecerf, B., Cotta, D. A., Andia, M., Wu, S., Johnson, M. Y. H., Lovett, B. W. & Kuhr, S. 12 Apr 2017 In : Journal of Physics B: Atomic, Molecular and Optical Physics. 50, 9, 095002
Research output: Contribution to journalArticle

Quantum gates with donors in germanium
Pica, G. & Lovett, B. W. 29 Nov 2016 In : Physical Review. B, Condensed matter and materials physics. 94, 20, 205309
Research output: Contribution to journalArticle

Photocell optimization using dark state protection
Fruchtman, A., Gómez-Bombarelli, R., Lovett, B. W. & Gauger, E. M. 10 Nov 2016 In : Physical Review Letters. 117, 20, 203603
Research output: Contribution to journalLetter

Designing spin-channel geometries for entanglement distribution
Levi, E. K., Kirton, P. G. & Lovett, B. W. 1 Sep 2016 In : Physical Review. A, Atomic, molecular, and optical physics. 94, 3, 6 p., 032302
Research output: Contribution to journalArticle

Quantum capacitance and charge sensing of a superconducting double dot
Lambert, N. J., Esmail, A. A., Edwards, M., Pollock, F. A., Lovett, B. W. & Ferguson, A. Sep 2016 In : Applied Physics Letters. 109, 11, 4 p., 112603
Research output: Contribution to journalLetter

Bath induced coherence and the secular approximation
Eastham, P. R., Kirton, P., Cammack, H. M., Lovett, B. W. & Keeling, J. Jul 2016 In : Physical Review. A, Atomic, molecular, and optical physics. 94, 1, 9 p., 012110
Research output: Contribution to journalArticle

Coherent exciton dynamics in a dissipative environment maintained by an off-resonant vibrational mode
Levi, E. K., Irish, E. K. & Lovett, B. W. Apr 2016 In : Physical Review. A, Atomic, molecular, and optical physics. 93, 4, 11 p., 042109
Research output: Contribution to journalArticle

Surface code architecture for donors and dots in silicon with imprecise and nonuniform qubit couplings
Pica, G., Lovett, B. W., Bhatt, R. N., Schenkel, T. & Lyon, S. A. 14 Jan 2016 In : Physical Review. B, Condensed matter and materials physics. 93, 3, 035306
Research output: Contribution to journalArticle

Synthesis and investigation of donor-porphyrin-acceptor triads with long-lived photo-induced charge-separate states
Kelber, J. B., Panjwani, N. A., Wu, D., Gómez-Bombarelli, R., Lovett, B. W., Morton, J. J. L. & Anderson, H. L. 1 Nov 2015 In : Chemical Science. 6, 11, p. 6468-6481 14 p.
Research output: Contribution to journalArticle

Probing charge fluctuator correlations using quantum dot pairs
Purohit, V., Braunecker, B. & Lovett, B. W. 15 Jun 2015 In : Physical Review. B, Condensed matter and materials physics. 91, 24, 245301
Research output: Contribution to journalArticle

Quantum dynamics in a tiered non-Markovian environment
Fruchtman, A., Lovett, B. W., Benjamin, S. C. & Gauger, E. M. 24 Feb 2015 In : New Journal of Physics. 17
Research output: Contribution to journalArticle

Hyperfine Stark effect of shallow donors in silicon
Pica, G., Wolfowicz, G., Urdampilleta, M., Thewalt, M. L. W., Riemann, H., Abrosimov, N. V., Becker, P., Pohl, H-J., Morton, J. J. L., Bhatt, R. N., Lyon, S. A. & Lovett, B. W. 18 Nov 2014 In : Physical Review. B, Condensed matter and materials physics. 90, 19, 195204
Research output: Contribution to journalArticle

Coherent and passive one dimensional quantum memory
Ping, Y., Jefferson, J. H. & Lovett, B. W. 16 Oct 2014 In : New Journal of Physics. 16, 103025
Research output: Contribution to journalArticle

Experimental observation of the breaking and recombination of single Cooper pairs
Lambert, N. J., Edwards, M., Esmail, A. A., Pollock, F. A., Barrett, S. D., Lovett, B. W. & Ferguson, A. J. 9 Oct 2014 In : Physical Review. B, Condensed matter and materials physics. 90, 14
Research output: Contribution to journalArticle

Probing bath-induced entanglement in a qubit pair by measuring photon correlations
Cotlet, O. & Lovett, B. W. 9 Oct 2014 In : New Journal of Physics. 16, 103016
Research output: Contribution to journalArticle

Superabsorption of light via quantum engineering
Higgins, K. D. B., Benjamin, S. C., Stace, T. M., Milburn, G. J., Lovett, B. W. & Gauger, E. M. 22 Aug 2014 In : Nature Communications. 5, 7 p., 4705
Research output: Contribution to journalArticle

Vibration-assisted resonance in photosynthetic excitation-energy transfer
Irish, E. K., Gómez-Bombarelli, R. & Lovett, B. W. 14 Jul 2014 In : Physical Review. A, Atomic, molecular, and optical physics. 90, 1, 10 p.
Research output: Contribution to journalArticle

Exchange coupling between silicon donors: The crucial role of the central cell and mass anisotropy
Pica, G., Lovett, B. W., Bhatt, R. N. & Lyon, S. A. 6 Jun 2014 In : Physical Review. B, Condensed matter and materials physics. 89, 23, 5 p., 235306
Research output: Contribution to journalArticle

Quantum thermometry using the ac Stark shift within the Rabi model
Higgins, K. D. B., Lovett, B. W. & Gauger, E. M. 7 Oct 2013 In : Physical Review. B, Condensed matter and materials physics. 88, 15, 6 p., 155409
Research output: Contribution to journalArticle

A multi-site variational master equation approach to dissipative energy transfer
Pollock, F. A., McCutcheon, D. P. S., Lovett, B. W., Gauger, E. M. & Nazir, A. 18 Jul 2013 In : New Journal of Physics. 15, 16 p., 075018
Research output: Contribution to journalArticle

Practicality of Spin Chain Wiring in Diamond Quantum Technologies
Ping, Y., Lovett, B. W., Benjamin, S. C. & Gauger, E. M. 5 Mar 2013 In : Physical Review Letters. 110, 10, 5 p., 100503
Research output: Contribution to journalArticle

Overcoming phonon-induced dephasing for indistinguishable photon sources
Close, T., Gauger, E. M. & Lovett, B. W. 7 Nov 2012 In : New Journal of Physics. 14, 17 p., 113004
Research output: Contribution to journalArticle

Investigating the generality of time-local master equations
Maldonado-Mundo, D., Oehberg, P., Lovett, B. W. & Andersson, E. 8 Oct 2012 In : Physical Review. A, Atomic, molecular, and optical physics. 86, 4, 6 p., 042107
Research output: Contribution to journalArticle

DEER-Stitch: Combining three- and four-pulse DEER measurements for high sensitivity, deadtime free data
Lovett, J. E., Lovett, B. W. & Harmer, J. Oct 2012 In : Journal of Magnetic Resonance. 223, p. 98-106 9 p.
Research output: Contribution to journalArticle

A New Type of Radical-Pair-Based Model for Magnetoreception
Stoneham, A. M., Gauger, E. M., Porfyrakis, K., Benjamin, S. C. & Lovett, B. W. 7 Mar 2012 In : Biophysical Journal. 102, 5, p. 961-968 8 p.
Research output: Contribution to journalComment/debate

Generating distributed entanglement from electron currents
Ping, Y., Kolli, A., Jefferson, J. H. & Lovett, B. W. 4 Oct 2011 In : New Journal of Physics. 13, 13 p., 103004
Research output: Contribution to journalArticle

Creating nuclear spin entanglement using an optical degree of freedom
Schaffry, M., Lovett, B. W. & Gauger, E. M. 21 Sep 2011 In : Physical Review. A, Atomic, molecular, and optical physics. 84, 3, 13 p., 032332
Research output: Contribution to journalArticle

A general approach to quantum dynamics using a variational master equation: Application to phonon-damped Rabi rotations in quantum dots
McCutcheon, D. P. S., Dattani, N. S., Gauger, E. M., Lovett, B. W. & Nazir, A. 25 Aug 2011 In : Physical Review. B, Condensed matter and materials physics. 84, 8, 4 p., 081305
Research output: Contribution to journalArticle

Effect of detuning on the phonon induced dephasing of optically driven InGaAs/GaAs quantum dots
Ramsay, A. J., Godden, T. M., Boyle, S. J., Gauger, E. M., Nazir, A., Lovett, B. W., Gopal, A. V., Fox, A. M. & Skolnick, M. S. May 2011 In : Journal of Applied Physics. 109, 10, 5 p., 102415
Research output: Contribution to journalArticle

Rapid and Robust Spin State Amplification
Close, T., Fadugba, F., Benjamin, S. C., Fitzsimons, J. & Lovett, B. W. 22 Apr 2011 In : Physical Review Letters. 106, 16, 4 p., 167204
Research output: Contribution to journalArticle

Coherent State Transfer between an Electron and Nuclear Spin in N-15@C-60
Brown, R. M., Tyryshkin, A. M., Porfyrakis, K., Gauger, E. M., Lovett, B. W., Ardavan, A., Lyon, S. A., Briggs, G. A. D. & Morton, J. J. L. 14 Mar 2011 In : Physical Review Letters. 106, 11, 4 p., 110504
Research output: Contribution to journalArticle

Hybrid Solid-State Qubits: The Powerful Role of Electron Spins
Morton, J. J. L. & Lovett, B. W. 2011 ANNUAL REVIEW OF CONDENSED MATTER PHYSICS, VOL 2. Langer, J. S. (ed.). PALO ALTO: ANNUAL REVIEWS, p. 189-212 24 p. (Annual Review of Condensed Matter Physics; vol. 2)
Research output: Chapter in Book/Report/Conference proceedingChapter