Academic Publications
Phil is still active in scientific research. Find more details on this page.
Scientific Papers
2024 Quantum Monte Carlo Integration for Simulation-Based Optimisation
J Cui, PJS de Brouwer, S Herbert, P Intallura, C Kargi, G Korpas, ...
arXiv preprint arXiv:2410.039262024 Spectral Methods for Quantum Optimal Control: Artificial Boundary Conditions
A Wodecki, J Marecek, V Kungurtsev, P Eichler, G Korpas, P Intallura
arXiv preprint arXiv:2403.144362024 Quantum multiple kernel learning in financial classification tasks
S Miyabe, B Quanz, N Shimada, A Mitra, T Yamamoto, V Rastunkov, ...
arXiv preprint arXiv:2312.002602023 Predicting Ising Model Performance on Quantum Annealers
S Certo, G Korpas, A Vlasic, P Intallura
arXiv preprint arXiv:2311.073882023 A survey of quantum alternatives to randomized algorithms: Monte carlo integration and beyond
P Intallura, G Korpas, S Chakraborty, V Kungurtsev, J Marecek
arXiv preprint arXiv:2303.049452023 Emergent Order in Classical Data Representations on Ising Spin Models
JJ Kirk, MD Jackson, DJM King, P Intallura, M Metcalf
arXiv preprint arXiv:2303.014612010 Quantum communication with a single photon source
PM Intallura2010 Biexciton cascade in telecommunication wavelength quantum dots
MB Ward, PM Intallura, CM Natarajan, RH Hadfield, P Atkinson, ZL Yuan, ...
Journal of Physics: Conference Series 210 (1), 0120362010 Quantum communication using single photons from a semiconductor quantum dot emitting at a telecommunication wavelength
PM Intallura, MB Ward, OZ Karimov, ZL Yuan, P See, P Atkinson, ...
Journal of Optics A: Pure and Applied Optics 11 (5), 0540052009 Fiber Optic Quantum Key Distribution with Single Photons from Quantum Dots
MB Ward, PM Intallura, T Farrow, P Atkinson, OZ Karimov, ZL Yuan, P See, ...
Frontiers in Optics, FWA42008 Quantum key distribution using a semiconductor quantum dot source emitting at a telecommunication wavelength
PM Intallura, MB Ward, OZ Karimov, ZL Yuan, P See, AJ Shields, ...
Quantum Dots, Particles, and Nanoclusters V 6902, 77-862008 Quantum Dots, Particles, and Nanoclusters V sponsors: Society of Photo-Optical Instrumentation Engineers (SPIE).-Том. 6902. Quantum Dots, Particles, and Nanoclusters V.-Сер …
V Tokranov, M Yakimov, JV Eisden, S Oktyabrsky, PM Intallura, MB Ward, ...
SPIE-International Society for Optical Engineering2008 Quantum key distribution using a semiconductor quantum dot source emitting at a telecommunication wavelength [6902-16]
PM Intallura, MB Ward, OZ Karimov, ZL Yuan, P See, AJ Shields, ...
SPIE-International Society for Optical Engineering 6902, 69022008 Quantum key distribution using a triggered quantum dot source emitting near 1.3 μm
PM Intallura, MB Ward, OZ Karimov, ZL Yuan, P See, AJ Shields, ...
Applied Physics Letters 91 (16)
Ph.D (Cantab) Thesis
This thesis describes the first demonstration of telecom optical fibre-based quantum key distribution using single photons from an InAs/GaAs quantum dot. The generation of single photons with wavelengths around 1.3 μm has been achieved by growing a low density of large InAs/GaAs quantum dots through molecular beam epitaxy techniques. In order to efficiently select and preferentially couple long-wavelength emission into single-mode optical fibre, the InAs quantum dots were incorporated into pillar microcavity structures.
Micro-photoluminescence measurements reveal a number of excitonic complexes in the studied quantum dots, including a biexciton cascade and charged excitonic emission. Strong enhancement of the collected intensity of the emission from excitonic states was achieved when temperature tuned onto resonance with the fundamental mode of the pillar microcavity, as compared to the off- resonance intensity. Purcell enhancement of the spontaneous emission rate is also demonstrated.
Strongly correlated photon emission is observed, not only within a single emission line but also between different emission lines such as emission from a biexciton-exciton cascade. Polarization correlations between the biexciton and exciton states show that the quantum dots measured have good potential to generate pairs of entangled photons, provided that the fine structure splitting can be reduced. High resolution spectroscopy is achieved by introducing a Fabry-Perot etalon with a linewidth significantly less than that of the quantum dot. The enhanced resolution allows deeper investigation into the fine structure splitting of the exciton state, and provides a useful tool for measuring samples where pairs of entangled photons are sought.
The lifetime of the emission and the suppression of multi-photon emission is compared by optical excitation energies tuned above and below the bandgap energy of GaAs. Exciting the quantum dots with below band excitation yield significant improvements in the performance of the source
in terms of jitter on the emission time and suppression of g measured and the corresponding correlation curve is presented.
The combination of the high quality emission and the enhanced photon extraction efficiency due to the presence of a cavity, enabled the incorporation of the single photon source into a BB84 phase encoded quantum key distribution system. Key transfer with the quantum dot source is shown to have a quantitative advantage at long distances compared with that which could be securely achieved using uniform intensity laser pulses at 1310 nm in the same system.