All Outputs (30)

A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers (2017)
Journal Article
Boto, E., Meyer, S. S., Shah, V., Alem, O., Knappe, S., Kruger, P., …Brookes, M. J. (2017). A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers. NeuroImage, 149, 404-414. https://doi.org/10.1016/j.neuroimage.2017.01.034

© 2017 The Authors Advances in the field of quantum sensing mean that magnetic field sensors, operating at room temperature, are now able to achieve sensitivity similar to that of cryogenically cooled devices (SQUIDs). This means that room temperatur... Read More about A new generation of magnetoencephalography: Room temperature measurements using optically-pumped magnetometers.

On the potential of a new generation of magnetometers for MEG: a beamformer simulation study (2016)
Journal Article
Boto, E., Bowtell, R. W., Kruger, P., Fromhold, T. M., Morris, P. G., Meyer, S. S., …Brookes, M. J. (2016). On the potential of a new generation of magnetometers for MEG: a beamformer simulation study. PLoS ONE, 11(8), Article e0157655. https://doi.org/10.1371/journal.pone.0157655

Magnetoencephalography (MEG) is a sophisticated tool which yields rich information on the spatial, spectral and temporal signatures of human brain function. Despite unique potential, MEG is limited by a low signal-to-noise ratio (SNR) which is caused... Read More about On the potential of a new generation of magnetometers for MEG: a beamformer simulation study.

The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper) (2016)
Journal Article
Bongs, K., Boyer, V., Cruise, M., Freise, A., Holynski, M., Hughes, J., …John, P. (2016). The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper). Proceedings of SPIE, 9900, Article 990009. https://doi.org/10.1117/12.2232143

The UK National Quantum Technology Hub in Sensors and Metrology is one of four flagship initiatives in the UK National of Quantum Technology Program. As part of a 20-year vision it translates laboratory demonstrations to deployable practical devices,... Read More about The UK National Quantum Technologies Hub in sensors and metrology (Keynote Paper).

Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors (2016)
Journal Article
Vdovin, E. E., Mishchenko, A., Greenaway, M., Zhu, M., Ghazaryan, D., Misra, A., …Eaves, L. (2016). Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors. Physical Review Letters, 116(18), Article 186603. https://doi.org/10.1103/PhysRevLett.116.186603

We observe a series of sharp resonant features in the differential conductance of graphene-hexagonal boron nitride-graphene tunnel transistors over a wide range of bias voltages between 10 and 200 mV. We attribute them to electron tunneling assisted... Read More about Phonon-Assisted Resonant Tunneling of Electrons in Graphene–Boron Nitride Transistors.

Resonant tunnelling between the chiral Landau states of twisted graphene lattices (2015)
Journal Article
Greenaway, M., Vdovin, E. E., Mishchenko, A., Makarovsky, O., Patanè, A., Wallbank, J., …Eaves, L. (2015). Resonant tunnelling between the chiral Landau states of twisted graphene lattices. Nature Physics, 11(12), 1057-1062. https://doi.org/10.1038/nphys3507

A class of multilayered functional materials has recently emerged in which the component atomic layers are held together by weak van der Waals forces that preserve the structural integrity and physical properties of each layer. An exemplar of such a... Read More about Resonant tunnelling between the chiral Landau states of twisted graphene lattices.

Graphene-hexagonal boron nitride resonant tunneling diodes as high-frequency oscillators (2015)
Journal Article
Gaskell, J., Eaves, L., Novoselov, K., Mishchenko, A., Geim, A., Fromhold, T., & Greenaway, M. (2015). Graphene-hexagonal boron nitride resonant tunneling diodes as high-frequency oscillators. Applied Physics Letters, 107(10), Article 103105. https://doi.org/10.1063/1.4930230

We assess the potential of two-terminal graphene-hexagonal boron nitride-graphene resonant tunneling diodes as high-frequency oscillators, using self-consistent quantum transport and electrostatic simulations to determine the time-dependent response... Read More about Graphene-hexagonal boron nitride resonant tunneling diodes as high-frequency oscillators.

Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures (2014)
Journal Article
Mishchenko, A., Tu, J., Cao, Y., Gorbachev, R., Wallbank, J., Greenaway, M., …Novoselov, K. (2014). Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures. Nature Nanotechnology, 9, 808-813. https://doi.org/10.1038/NNANO.2014.187

Recent developments in the technology of van der Waals heterostructures made from two-dimensional atomic crystals ave already led to the observation of new physical phenomena, such as the metal-insulator transition and Coulomb drag, and to the realis... Read More about Twist-controlled resonant tunnelling in graphene/boron nitride/graphene heterostructures.

iSense: a technology platform for cold atom based quantum technologies (2014)
Conference Proceeding
Bongs, K., Malcolm, J., Ramelloo, C., Zhu, L., Boyer, V., Valenzuela, T., …Wicht, A. (2014). iSense: a technology platform for cold atom based quantum technologies. In Research in Optical Sciences. https://doi.org/10.1364/QIM.2014.QTu3B.1

A breakthrough in cold atom quantum technology is hindered by a bottleneck in the supporting technologies. We discuss a cold atom technology platform developed within the European iSense project, aiming at a gravimeter as demonstrator.

Subterahertz chaos generation by coupling a superlattice to a linear resonator (2014)
Journal Article
Hramov, A., Makarov, V., Koronovskii, A., Kurkin, S., Gaifullin, M., Alexeeva, N., …Balanov, A. (2014). Subterahertz chaos generation by coupling a superlattice to a linear resonator. Physical Review Letters, 112(116603), https://doi.org/10.1103/PhysRevLett.112.116603

We investigate the effects of a linear resonator on the high-frequency dynamics of electrons in devices exhibiting negative differential conductance. We show that the resonator strongly affects both the dc and ac transport characteristics of the devi... Read More about Subterahertz chaos generation by coupling a superlattice to a linear resonator.

III-V semiconductor waveguides for photonic functionality at 780 nm (2014)
Journal Article
Maclean, J. O., Greenaway, M. T., Campion, R. P., Pyragius, T., Fromhold, T. M., Kent, A. J., & Mellor, C. J. (2014). III-V semiconductor waveguides for photonic functionality at 780 nm. Proceedings of SPIE, 8988, Article 898805. https://doi.org/10.1117/12.2039898

Photonic integrated circuits based on III-V semiconductor polarization-maintaining waveguides were designed and fabricated for the first time for application in a compact cold-atom gravimeter1,2 at an operational wavelength of 780 nm. Compared with o... Read More about III-V semiconductor waveguides for photonic functionality at 780 nm.