Home > Capability > Quantum Technologies

The micro and nanofabrication capability at Glasgow has been developing and delivering a wide range of technologies for quantum technologies which includes microtraps and integrated DFB lasers for atomic clocks, Si photonic circuits (including sources, couplers, beamsplitters, Mach Zehnders, modulators and single photon detectors) for quantum communication and quantum computing and a range of quantum sensors.

Microtrap

Microtrap for Ultracold Atoms for Quantum Technology

X. Cai et al. "A surface-patterned chip as a strong source of ultracold atoms for quantum technologies" Nature Nanotechnology 8, 321 (2013): doi: 10.1038/nnano.2013.47

Ramsay

Quantum Dot Spin-Photon Entanglement

K. De Greve et al. "Quantum-dot spin-photon entanglement via frequency downconversion to telecom wavelength" Nature 491, 421 (2012): doi:10.1038/nature11577

Source

Silicon Photon-Pair Source

J.W. Silverstone et al. "On-chip quantum interference between silicon photon-pair sources" Nature Photonics 8, 104 (2013): doi:10.1038/nphoton.2013.339

Science

Si Photonics Optical Vortex Emitters

X. Cai et al. "Integrated Compact Optical Vortex Beam Emitters" Science 338, 363 (2012): doi: 10.1126/science.1226528

CROW

All Optical Wavelength Conversion

F. Morichetti et al. "Travelling-wave resonant four-wave mixing breaks the limits of cavity-enhanced all-optical wavelength conversion" Nature Comms. 1, 296 (2011): doi:10.1038/ncomms1294

Microring

Si Photonic Twin Photon Generation

S. Azzini et al. "Ultra-low power generation of twin photons in a compact silicon ring resonator" Opt. Exp. 20, 23100 (2012): doi: 10.1364/OE.20.023100

NbN

Single Photon Detectors

R.H. Hadfield "Single-photon detectors for optical quantum information applications" Nature Photonics 3, 696 (2009): doi:10.1038/nphoton.2009.230

GeSPAD

Ge on Si Single-Photon Avalanche Detectors

R.E. Warburton et al. "Ge-on-Si Single-Photon Avalanche Diode Detectors: Design, Modeling, Fabrication, and Characterization at Wavelengths 1310 and 1550 nm" IEEE Trans. Elec. Dev. 60, 3807 (2013): doi:10.1109/TED.2013.2282712

Single Photon

Single Photon Diode Laser Source

P. Sarrafi, et al. "Continuous-wave quasi-phase-matched waveguide correlated photon pair source on a III-V chip" Appl. Phys. Letts. 103, 251115 (2013): doi: 10.1063/1.4851095

MZ

Monolithically Integrated DFB Lasers

M. Zanola et al. "Monolithically Integrated DFB Lasers for Tunable and Narrow Linewidth Millimeter-Wave Generation" IEEE J. Select Topics Quantum Elec. 19, 1500406 (2013): doi:10.1109/JSTQE.2012.2235412

DFB

DFB Laser with Semiconductor Optical Amplifier

L. Hou et al. "Narrow linewidth laterally coupled 1.55 μm AlGaInAs/InP distributed feedback lasers integrated with a curved tapered semiconductor optical amplifier" Opt. Lett. 37, 4525 (2012): doi:10.1364/OL.37.004525

MZ

Integrated nonlinear Mach Zehnder

C. Lacava et al. "Integrated nonlinear Mach Zehnder for 40 Gbit/s all-optical switching" Opt. Exp. 21, 21587 (2013): doi:10.1364/OE.21.021587

Silicon High-Q Cavity

Silicon High-Q Microcavities

A.R.M. Zain et al. "Ultra high quality factor 1D photonic crystal/photonic wire micro-cavities in silicon-on-insulator (SOI)" Opt. Exp. 16, 12084 (2008): doi:10.1364/OE.16.012084

Silicon waveguide

Low Loss Silicon Waveguides

M. Gnan et al. "Fabrication of low loss photonic wires in silicon-on-insulator using hydrogen silsesquioxane electron-beam resist" Elec. Lett. 44, 115 (2008): doi:10.1049/el:20082985

QCSE

Germanium Quantum Well Quantum Confined Stark Effect Modelling

D.J. Paul "8-band k.p modeling of the quantum confined Stark effect in Ge quantum wells on Si substrates" Phys. Rev. B 77, 155323 (2008): doi:10.1103/PhysRevB.77.155323

bandwidth

The Future of Silicon Photonics

D.J. Paul "Silicon photonics: a bright future?" Elec. Lett. 45, 582 (2009): doi:10.1049/el.2009.1271

supermode

Silicon Tunable Delay Lines

C.E. de Nobriga et al. "Supermode dispersion and waveguide-to-slot mode transition in arrays of silicon-on-insulator waveguides" Opt. Lett. 35, 3925 (2010): doi:10.1364/OL.35.003925