All Outputs (182)

Time evolution of uniform sequential circuits (2023)
Journal Article
Astrakhantsev, N., Lin, S.-H., Pollmann, F., & Smith, A. (2023). Time evolution of uniform sequential circuits. Physical Review Research, 5(3), Article 033187. https://doi.org/10.1103/physrevresearch.5.033187

Simulating time evolution of generic quantum many-body systems using classical numerical approaches has an exponentially growing cost either with evolution time or with the system size. In this work we present a polynomially scaling hybrid quantum-cl... Read More about Time evolution of uniform sequential circuits.

Q-Ball Superradiance (2023)
Journal Article
Saffin, P. M., Xie, Q., & Zhou, S. (2023). Q-Ball Superradiance. Physical Review Letters, 131(11), Article 111601. https://doi.org/10.1103/physrevlett.131.111601

Q-balls are nontopological solitons that coherently rotate in field space. We show that these coherent rotations can induce superradiance for scattering waves, thanks to the fact that the scattering involves two coupled modes. Despite the conservatio... Read More about Q-Ball Superradiance.

Dissipative quantum many-body dynamics in (1+1)D quantum cellular automata and quantum neural networks (2023)
Journal Article
Boneberg, M., Carollo, F., & Lesanovsky, I. (2023). Dissipative quantum many-body dynamics in (1+1)D quantum cellular automata and quantum neural networks. New Journal of Physics, 25, Article 093020. https://doi.org/10.1088/1367-2630/aceff4

Classical artificial neural networks, built from elementary units, possess enormous expressive power. Here we investigate a quantum neural network architecture, which follows a similar paradigm. It is structurally equivalent to so-called (1+1)D quant... Read More about Dissipative quantum many-body dynamics in (1+1)D quantum cellular automata and quantum neural networks.

Polarized thermal emission from dust in a galaxy at redshift 2.6 (2023)
Journal Article
Geach, J. E., Lopez-Rodriguez, E., Doherty, M. J., Chen, J., Ivison, R. J., Bendo, G. J., …Coppin, K. E. (2023). Polarized thermal emission from dust in a galaxy at redshift 2.6. Nature, 621(7979), 483-486. https://doi.org/10.1038/s41586-023-06346-4

Magnetic fields are fundamental to the evolution of galaxies, playing a key role in the astrophysics of the interstellar medium and star formation. Large-scale ordered magnetic fields have been mapped in the Milky Way and nearby galaxies1,2, but it i... Read More about Polarized thermal emission from dust in a galaxy at redshift 2.6.

Measuring the photo-ionization rate, neutral fraction and mean free path of HI ionizing photons at 4.9≤z≤6.0 from a large sample of XShooter and ESI spectra (2023)
Journal Article
Gaikwad, P., Haehnelt, M. G., Davies, F. B., Bosman, S. E. I., Molaro, M., Kulkarni, G., …Eilers, A.-C. (2023). Measuring the photo-ionization rate, neutral fraction and mean free path of HI ionizing photons at 4.9≤z≤6.0 from a large sample of XShooter and ESI spectra. Monthly Notices of the Royal Astronomical Society, 525(3), 4093-4120. https://doi.org/10.1093/mnras/stad2566

We measure the mean free path (⁠λmfp,HI⁠), photo-ionization rate (⁠⟨ΓHI⟩⁠) and neutral fraction (⁠⟨fHI⟩⁠) of hydrogen in 12 redshift bins at 4.85 < z < 6.05 from a large sample of moderate resolution XShooter and ESI QSO absorption spectra. The fluct... Read More about Measuring the photo-ionization rate, neutral fraction and mean free path of HI ionizing photons at 4.9≤z≤6.0 from a large sample of XShooter and ESI spectra.

Primordial black holes and stochastic inflation beyond slow roll. Part I. Noise matrix elements (2023)
Journal Article
Mishra, S. S., Copeland, E. J., & Green, A. M. (2023). Primordial black holes and stochastic inflation beyond slow roll. Part I. Noise matrix elements. Journal of Cosmology and Astroparticle Physics, 2023(September 2023), Article 005. https://doi.org/10.1088/1475-7516/2023/09/005

Primordial Black Holes (PBHs) may form in the early Universe, from the grav-itational collapse of large density perturbations, generated by large quantum fluctuations during inflation. Since PBHs form from rare over-densities, their abundance is sens... Read More about Primordial black holes and stochastic inflation beyond slow roll. Part I. Noise matrix elements.

Slow heterogeneous relaxation due to constraints in dual XXZ models (2023)
Journal Article
Zadnik, L., & Garrahan, J. P. (2023). Slow heterogeneous relaxation due to constraints in dual XXZ models. Physical Review B, 108(10), Article L100304. https://doi.org/10.1103/PhysRevB.108.L100304

With the aim to understand the role of the constraints in the thermalization of quantum systems, we study the dynamics of a family of kinetically constrained models arising through duality from the XXZ spin chain. We find that integrable and noninteg... Read More about Slow heterogeneous relaxation due to constraints in dual XXZ models.

Electrical control of 180° domain walls in an antiferromagnet (2023)
Journal Article
Amin, O. J., Reimers, S., Maccherozzi, F., Dhesi, S. S., Novák, V., Campion, R. P., …Wadley, P. (2023). Electrical control of 180° domain walls in an antiferromagnet. APL Materials, 11(9), Article 091112. https://doi.org/10.1063/5.0156508

We demonstrate the reversible current-induced motion of 180° antiferromagnetic domain walls in a CuMnAs device. By controlling the magnitude and direction of the current pulse, the position of a domain wall can be switched between three distinct pinn... Read More about Electrical control of 180° domain walls in an antiferromagnet.

Selective Excitation of Pd-decorated Titania Enables Consecutive C−C Couplings and Hydrogenations under Ambient Conditions (2023)
Journal Article
Whitehead, R. Z., Norman, L. T., Cull, W. J., Fernandes, J. A., & Lanterna, A. E. (2023). Selective Excitation of Pd-decorated Titania Enables Consecutive C−C Couplings and Hydrogenations under Ambient Conditions. ChemCatChem, 15(21), Article e202300528. https://doi.org/10.1002/cctc.202300528

Here, we discovered that Pd decorated TiO2 (Pd@TiO2) enables consecutive photocatalytic Sonogashira C−C coupling and hydrogenation steps by simply adjusting the excitation conditions of the reaction. We demonstrated that by-products containing iodine... Read More about Selective Excitation of Pd-decorated Titania Enables Consecutive C−C Couplings and Hydrogenations under Ambient Conditions.

Molecular Dynamics in Rydberg Tweezer Arrays: Spin-Phonon Entanglement and Jahn-Teller Effect (2023)
Journal Article
Magoni, M., Joshi, R., & Lesanovsky, I. (2023). Molecular Dynamics in Rydberg Tweezer Arrays: Spin-Phonon Entanglement and Jahn-Teller Effect. Physical Review Letters, 131(9), Article 093002. https://doi.org/10.1103/physrevlett.131.093002

Atoms confined in optical tweezer arrays constitute a platform for the implementation of quantum computers and simulators. State-dependent operations are realized by exploiting electrostatic dipolar interactions that emerge, when two atoms are simult... Read More about Molecular Dynamics in Rydberg Tweezer Arrays: Spin-Phonon Entanglement and Jahn-Teller Effect.

Cosmology with the Laser Interferometer Space Antenna (2023)
Journal Article
Auclair, P., Bacon, D., Baker, T., Barreiro, T., Bartolo, N., Belgacem, E., …Zhdanov, V. I. (2023). Cosmology with the Laser Interferometer Space Antenna. Living Reviews in Relativity, 26, Article 5. https://doi.org/10.1007/s41114-023-00045-2

The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and... Read More about Cosmology with the Laser Interferometer Space Antenna.

Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex (2023)
Journal Article
Asghar, M., Sanchez-Panchuelo, R., Schluppeck, D., & Francis, S. (2023). Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex. Brain Topography, 36, 816-834. https://doi.org/10.1007/s10548-023-01000-8

Functional magnetic resonance imaging can provide detailed maps of how sensory space is mapped in the human brain. Here, we use a novel 16 stimulator setup (a 4 × 4 grid) to measure two-dimensional sensory maps of between and within-digit (D2–D4) spa... Read More about Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex.

In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans (2023)
Journal Article
Almutairi, F., Alyami, J., Pritchard, S., Alsharef, W., Spiller, R. C., Gowland, P. A., …Hoad, C. L. (2023). In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans. Clinical Nutrition Open Science, 51, 35-43. https://doi.org/10.1016/j.nutos.2023.08.002

The presence of a ‘magenstrasse’, a central ‘stomach road’ for flow and mixing of foods and drinks in the stomach had been predicted from hydrodynamic modelling. Here a magnetic resonance imaging (MRI) tagging technique was used to gain novel insight... Read More about In vivo observation of a stomach road or ‘Magenstrasse’ for gastric emptying using MRI imaging in healthy humans.

Quantum sensing of microwave electric fields based on Rydberg atoms (2023)
Journal Article
Yuan, J., Yang, W., Jing, M., Zhang, H., Jiao, Y., Li, W., …Jia, S. (2023). Quantum sensing of microwave electric fields based on Rydberg atoms. Reports on Progress in Physics, 86(10), https://doi.org/10.1088/1361-6633/acf22f

Microwave electric field (MW E-field) sensing is important for a wide range of applications in the areas of remote sensing, radar astronomy and communications. Over the past decade, Rydberg atoms have been used in ultrasensitive, wide broadband, trac... Read More about Quantum sensing of microwave electric fields based on Rydberg atoms.

Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure (2023)
Journal Article
Dey, A., Cottam, N., Makarovskiy, O., Yan, W., Mišeikis, V., Coletti, C., …Patanè, A. (2023). Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure. Communications Physics, 6, Article 216. https://doi.org/10.1038/s42005-023-01340-8

The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant for compact... Read More about Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure.

Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis (2023)
Journal Article
Frampton, E. S., Edmondson, M., Judd, C. J., Duncan, D. A., Jones, R. G., & Saywell, A. (2023). Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis. Inorganica Chimica Acta, 558, Article 121718. https://doi.org/10.1016/j.ica.2023.121718

The study of surface-confined reactions provides a route towards characterising the mechanistic processes which underpin heterogeneous catalysis. On-surface reactions provide alternative pathways to solution phase synthesis, and can be studied by a r... Read More about Self-metalation of tetraphenyl porphyrin on Au(111): Structural characterisation via X-ray standing wave analysis.

Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors (2023)
Journal Article
Kim, Y., Alotaibi, S., Henini, M., Chun, B. S., & Lee, S. J. (2023). Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors. APL Materials, 11(8), Article 081104. https://doi.org/10.1063/5.0157112

A mid-wavelength p–B–i–n infrared photodetector constituting ternary alloys of an InAs0.9Sb0.1 absorber and an AlAs0.05Sb0.95 electron barrier was demonstrated to operate at room temperature. The results of high-resolution x-ray diffraction (XRD) ana... Read More about Uncooled mid-wavelength InAsSb/AlAsSb heterojunction photodetectors.

The co-evolution of strong AGN and central galaxies in different environments (2023)
Journal Article
Sampaio, V. M., Aragón-Salamanca, A., Merrifield, M. R., De Carvalho, R. R., Zhou, S., & Ferreras, I. (2023). The co-evolution of strong AGN and central galaxies in different environments. Monthly Notices of the Royal Astronomical Society, 524(4), 5327–5339. https://doi.org/10.1093/mnras/stad2211

We exploit a sample of 80 000 Sloan Digital Sky Survey central galaxies to investigate the effect of active galactic nucleus (AGN) feedback on their evolution. We trace the demographics of optically selected AGN (Seyferts) as a function of their inte... Read More about The co-evolution of strong AGN and central galaxies in different environments.

The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey (2023)
Journal Article
Cornwell, D. J., Aragón-Salamanca, A., Kuchner, U., Gray, M. E., Pearce, F. R., & Knebe, A. (2023). The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey. Monthly Notices of the Royal Astronomical Society, 524(2), 2148–2160. https://doi.org/10.1093/mnras/stad1949

Upcoming wide-field spectroscopic surveys will observe galaxies in a range of cosmic web environments in and around galaxy clusters. In this paper, we test and quantify how successfully we will be able to identify the environment of individual galaxi... Read More about The probability of identifying the cosmic web environment of galaxies around clusters motivated by the Weave Wide Field Cluster Survey.

Measuring chemical exchange saturation transfer exchange rates in the human brain using a particle swarm optimisation algorithm (2023)
Journal Article
Carradus, A. J., Bradley, J. M., Gowland, P. A., & Mougin, O. E. (2023). Measuring chemical exchange saturation transfer exchange rates in the human brain using a particle swarm optimisation algorithm. NMR in Biomedicine, 36(11), Article e5001. https://doi.org/10.1002/nbm.5001

The z‐spectrum contains many pools with different exchange rates and T 2 values, which can make it difficult to interpret in vivo data and complicates the design of experiments aimed at providing sensitivity to one pool. This work aims to characteris... Read More about Measuring chemical exchange saturation transfer exchange rates in the human brain using a particle swarm optimisation algorithm.