We report a proof-of-principle realization of a decoy-state BB84 quantum key distribution (QKD) protocol with phase encoding over a record-breaking 17 km of multimode fiber (MMF) at a rate of 193 kbits/s, as well as over 1 Mbit/s at a distance of 1 km. These results suggest that QKD can be deployed over MMF in metropolitan-scale telecommunication c...
3D single-molecule imaging reveals nanoscale structures in cell volumes but is limited by the need for spectrally distinct fluorophores. We address this limitation with vortex light field microscopy (VLFM), a 3D spectral single-molecule localization technique with 25 nm spatial and 3 nm spectral precision over a 4 µm depth of field. By modifying ou...
Although the use of verditer, a synthetically produced copper carbonate pigment chemically analogous to azurite (Cu3(CO3)2(OH)2), in early modern wall paintings is regularly reported in grey literature, its detection in wall paintings is typically unavailable in a public forum. This article focusses on two particular samples (M9 and T1) initially s...
The presence of disorder substantially influences the behaviour of physical systems. It can give rise to slow or glassy dynamics, or to a complete suppression of transport as in Anderson insulators1, where normally extended wavefunctions such as light fields or electronic Bloch waves become exponentially localized. The combined effect of disorder a...
We investigate the endofullerene system Ne@C70 by constructing a three-dimensional Potential Energy Surface (PES) describing the translational motion of the Ne atom. This is constructed from electronic structure calculations from a plethora of methods, including MP2, SCS-MP2, SOS-MP2, RPA@PBE, and C(HF)-RPA, which were previously used for He@C60 in...
Thermodynamic parameters, such as the activation energy (Ea) and the diffusion coefficient (D0), of weakly bounded oxygen in Fe-doped YBa2Cu3O6+x (YBa2Cu3-yFeyO6+x) system were obtained utilizing the Manometric technique. It is found that under isothermal conditions, oxygen desorption in YBa2Cu3O6+x (YBCO) occurs following an exponential decay tren...
In this paper, we investigate the optical properties of a zincblende InGaN single quantum well (SQW) structure containing stacking faults (SFs). Cathodoluminescence studies revealed the presence of sharp emission features adjacent to SFs, identified as quantum wires (Qwire) via their spatial anisotropy. Scanning transmission electron micros...
Peer reviewed: True / Publication status: Published / Funder: Department of Science, Innovation and Technology (DSIT) / Funder: UK Research and Innovation / In this paper, we experimentally illustrate the effectiveness of neural networks (NNs) as non-linear equalisers for multilevel pulse amplitude modulation (PAM-M) transmission over an optical wi...
We introduce a flexible microscale all-fibre-optic Raman probe which can be embedded into devices to enable operando in-situ spectroscopy. The facile-constructed probe is composed of a nested anti-resonant nodeless hollow-core fibre combined with an integrated high refractive index barium titanate microlens. Pump laser 785 nm excitation and near-in...
