Dr Alistair Brash

School of Mathematical and Physical Sciences

EPSRC Quantum Technologies Research Fellow

a.brash@sheffield.ac.uk
+44 114 222 4546

F43, Hicks Building

Full contact details

Dr Alistair Brash
School of Mathematical and Physical Sciences
F43
Hicks Building
Hounsfield Road
Sheffield
S3 7RH

Profile

My research focuses on studying light-matter interactions in semiconductor nanostructures at the single particle level. A particular focus is using these interactions to generate quantum states of light, supporting the development of optical quantum technologies such as secure communications, enhanced imaging and sensing and photonic quantum computing.

Key to these goals is understanding and controlling the interactions between the microscopic quantum system and the macroscopic semiconductor environment. By understanding these interactions, we can access new quantum states with greater efficiencies and fidelities, whilst also significantly increasing the operating temperature of the devices.

Publications

Show: Featured publications All publications

Featured publications

Journal articles

Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Clarke E, Royall B, Skolnick MS, Fox AM & Nazir A (2020) Photon Statistics of Filtered Resonance Fluorescence. Physical Review Letters, 125(4), ---.
Brash AJ, Iles-Smith J, Phillips CL, McCutcheon DPS, O’Hara J, Clarke E, Royall B, Wilson LR, Mørk J, Skolnick MS , Fox AM et al (2019) Light Scattering from Solid-State Quantum Emitters: Beyond the Atomic Picture. Physical Review Letters, 123(16), ---.
Liu F, Brash AJ, O’Hara J, Martins LMPP, Phillips CL, Coles RJ, Royall B, Clarke E, Bentham C, Prtljaga N , Itskevich IE et al (2018) High Purcell factor generation of indistinguishable on-chip single photons. Nature Nanotechnology, 13(9), 835-840.
Quilter JH, Brash AJ, Liu F, Glässl M, Barth AM, Axt VM, Ramsay AJ, Skolnick MS & Fox AM (2015) Phonon-Assisted Population Inversion of a Single InGaAs/GaAs Quantum Dot by Pulsed Laser Excitation. Physical Review Letters, 114(13), ---.

All publications

Journal articles

Phillips CL, Brash AJ, Godsland M, Martin NJ, Foster A, Tomlinson A, Dost R, Babazadeh N, Sala EM, Wilson L , Heffernan J et al (2024) Purcell-enhanced single photons at telecom wavelengths from a quantum dot in a photonic crystal cavity. Scientific Reports, 14(1). View this article in WRRO
Siampour H, O’Rourke C, Brash AJ, Makhonin MN, Dost R, Hallett DJ, Clarke E, Patil PK, Skolnick MS & Fox AM (2023) Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide. npj Quantum Information, 9(1).
Sortino L, Zotev PG, Phillips CL, Brash AJ, Cambiasso J, Marensi E, Fox AM, Maier SA, Sapienza R & Tartakovskii AI (2021) Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas. Nature Communications, 12(1). View this article in WRRO
Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Clarke E, Royall B, Skolnick MS, Fox AM & Nazir A (2020) Photon Statistics of Filtered Resonance Fluorescence. Physical Review Letters, 125(4), ---.
Brash AJ, Iles-Smith J, Phillips CL, McCutcheon DPS, O’Hara J, Clarke E, Royall B, Wilson LR, Mørk J, Skolnick MS , Fox AM et al (2019) Light Scattering from Solid-State Quantum Emitters: Beyond the Atomic Picture. Physical Review Letters, 123(16), ---.
Liu F, Brash AJ, O’Hara J, Martins LMPP, Phillips CL, Coles RJ, Royall B, Clarke E, Bentham C, Prtljaga N , Itskevich IE et al (2018) High Purcell factor generation of indistinguishable on-chip single photons. Nature Nanotechnology, 13(9), 835-840.
Brash AJ, Martins LMPP, Barth AM, Liu F, Quilter JH, Glassl M, Axt VM, Ramsay AJ, Skolnick MS & fox (2016) Dynamic vibronic coupling in InGaAs quantum dots. Journal of the Optical Society of America B, 33(7), C115-C122. View this article in WRRO
Liu F, Martins LMP, Brash AJ, Barth AM, Quilter JH, Axt VM, Skolnick MS & Fox AM (2016) Ultrafast depopulation of a quantum dot by LA-phonon-assisted stimulated emission. Physical Review B, 93. View this article in WRRO
Quilter JH, Brash AJ, Liu F, Glässl M, Barth AM, Axt VM, Ramsay AJ, Skolnick MS & Fox AM (2015) Phonon-Assisted Population Inversion of a Single InGaAs/GaAs Quantum Dot by Pulsed Laser Excitation. Physical Review Letters, 114(13), ---.
Brash AJ, Quilter JH, Liu F, Glaessl M, Barth AM, Axt VM, Ramsay AJ, Skolnick MS & Fox AM (2015) Phonon-Assisted Population Inversion of a Single Quantum Dot. 2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO).
Brash A & Iles-Smith J () Nanocavity enhanced photon coherence of solid-state quantum emitters operating up to 30 K. Materials for Quantum Technology.
Javadi A, Tomm N, Antoniadis NO, Brash A, Schott R, valentin S, Wieck ADD, Ludwig A & Warburton RJ () Cavity-enhanced excitation of a quantum dot in the picosecond regime. New Journal of Physics.
Brash AJ, Martins LMPP, Liu F, Quilter JH, Ramsay AJ, Skolnick MS & Fox AM () High-fidelity initialization of long-lived quantum dot hole spin qubits by reduced fine-structure splitting. Physical Review B, 92(12). View this article in WRRO

Chapters

Brash AJ, Liu F & Fox AM (2017) Ultrafast Manipulation of Excitons and Spins in Quantum Dots, Quantum Dots for Quantum Information Technologies (pp. 325-357). Springer International Publishing

Conference proceedings papers

Siampour H, O’Rourke C, Brash AJ, Makhonin MN, Dost R, Hallett DJ, Clarke E, Patil PK, Skolnick MS & Fox AM (2023) Chiral nanophotonic waveguides for spin-based quantum optical devices. International Conference on Metamaterials, Photonic Crystals and Plasmonics (pp 1061)
Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Skolnick MS, Mark Fox A & Nazir A (2021) Photon Statistics of Filtered Quantum Dot Resonance Fluorescence. 2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings
Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Skolnick MS, Fox AM & Nazir A (2021) Photon Statistics of Filtered Quantum Dot Resonance Fluorescence. Conference on Lasers and Electro-Optics, 2021.
Brash AJ, Iles-Smith J, Phillips CL, O’Hara J, Royall B, Wilson LR, Skolnick MS, Fox AM, McCutcheon DPS, Clarke E , Mørk J et al (2020) Coherent scattering from quantum dots: beyond the atomic picture. Conference on Lasers and Electro-Optics, 2020.
Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Skolnick MS, Fox AM & Nazir A (2020) Photon Statistics of Filtered Quantum Dot Resonance Fluorescence. Frontiers in Optics / Laser Science, 2020.
Brash AJ, Iles-Smith J, Phillips CL, McCutcheon DPS, Mork J, Skolnick MS, Fox AM & Nazir A (2019) Light Scattering from Solid-State Quantum Emitters: Beyond the Atomic Picture. International Conference on Metamaterials, Photonic Crystals and Plasmonics (pp 438-439)
Brash A, Liu F, O’Hara J, Martins LMPP, Coles RJ, Phillips CL, Royall B, Bentham C, Itskevich I, Wilson LR , Skolnick MS et al (2017) Bright and Coherent On-Chip Single Photons from a Very High Purcell Factor Photonic Crystal Cavity. Conference on Lasers and Electro-Optics, 2017.
Brash AJ, Quilter JH, Liu F, Glassl M, Barth AM, Axt VM, Ramsay AJ, Skolnick MS & Fox AM (2015) Phonon-assisted population inversion of a single quantum dot. Conference on Lasers and Electro-Optics Europe - Technical Digest, Vol. 2015-August
Brash AJ, Martins LMP, Liu F, Quilter JH, Skolnick MS & Fox AM (2015) Fast high-fidelity hole spin initialisation in a single quantum dot at zero magnetic field. Conference on Lasers and Electro-Optics Europe - Technical Digest, Vol. 2015-August
Brash A, Quilter JH, Liu F, Glässl M, Barth A, Axt VM, Ramsay A, Skolnick MS & Fox AM (2015) Phonon-Assisted Population Inversion of a Single Quantum Dot. CLEO: 2015, 2015.
Brash A, Martins LM, Liu F, Quilter JH, Skolnick MS & Fox AM (2015) Fast High-Fidelity Hole Spin Initialisation in a Single Quantum Dot at Zero Magnetic Field. CLEO: 2015, 2015.

Datasets

Brash A High Purcell factor generation of coherent on-chip single photons.

Preprints

Brash AJ & Iles-Smith J (2023) Towards Generating Indistinguishable Photons from Solid-State Quantum Emitters at Elevated Temperatures.
Javadi A, Tomm N, Antoniadis NO, Brash AJ, Schott R, Valentin SR, Wieck AD, Ludwig A & Warburton RJ (2023) Cavity-enhanced excitation of a quantum dot in the picosecond regime, arXiv.
Siampour H, O'Rourke C, Brash AJ, Makhonin MN, Dost R, Hallett DJ, Clarke E, Patil PK, Skolnick MS & fox M (2022) Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide, Research Square Platform LLC.
Siampour H, O'Rourke C, Brash AJ, Makhonin MN, Dost R, Hallett DJ, Clarke E, Patil PK, Skolnick MS & Fox AM (2022) Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide, arXiv.
Sheldon SJ, Brash AJ, Skolnick MS, Fox AM & Iles-Smith J (2022) Optical Spin Initialisation and Readout with a Cavity-Coupled Quantum Dot in an In-Plane Magnetic Field, arXiv.
Sortino L, Zotev PG, Phillips CL, Brash AJ, Cambiasso J, Marensi E, Fox AM, Maier SA, Sapienza R & Tartakovskii AI (2021) Bright single photon emitters with enhanced quantum efficiency in a two-dimensional semiconductor coupled with dielectric nano-antennas, arXiv.
Phillips CL, Brash AJ, McCutcheon DPS, Iles-Smith J, Clarke E, Royall B, Skolnick MS, Fox AM & Nazir A (2020) Photon Statistics of Filtered Resonance Fluorescence, arXiv.
Brash AJ, Iles-Smith J, Phillips CL, McCutcheon DPS, O'Hara J, Clarke E, Royall B, Mørk J, Skolnick MS, Fox AM & Nazir A (2019) Light Scattering from Solid-State Quantum Emitters: Beyond the Atomic Picture, arXiv.
Liu F, Brash AJ, O'Hara J, Martins LMPP, Phillips CL, Coles RJ, Royall B, Clarke E, Bentham C, Prtljaga N , Itskevich IE et al (2017) High Purcell factor generation of coherent on-chip single photons, arXiv.
Brash AJ, Martins LMPP, Barth AM, Liu F, Quilter JH, Glassl M, Axt VM, Ramsay AJ, Skolnick MS & Fox AM (2016) Dynamic vibronic coupling in InGaAs quantum dots, arXiv.
Liu F, Martins LMP, Brash AJ, Barth AM, Quilter JH, Axt VM, Skolnick MS & Fox AM (2016) Ultrafast Depopulation of a Quantum Dot by LA-phonon-assisted Stimulated Emission, arXiv.
Brash AJ, Martins LMPP, Liu F, Quilter JH, Ramsay AJ, Skolnick MS & Fox AM (2015) High-fidelity initialization of long-lived quantum dot hole spin qubits by reduced fine-structure splitting, arXiv.