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Observation of a giant Goos-H\'anchen shift for matter waves

Autor: McKay, S., de Haan, V. O., Leiner, J., Parnell, S. R., Dalgliesh, R. M., Boeni, P., Bannenberg, L. J., Thien, Q. Le, Baxter, D. V., Ortiz, G., Pynn, R.

The Goos-H\"anchen (GH) shift describes a phenomenon in which a specularly-reflected beam is laterally translated along the reflecting surface such that the incident and reflected rays no longer intersect at the surface. Using a neutron spin-echo tec

Externí odkaz: http://arxiv.org/abs/2407.01190

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Spin-Energy Entanglement of a Time-Focused Neutron

Autor: Leiner, J. C., Kuhn, S. J., McKay, S., Jochum, J. K., Li, F., Irfan, A. A. M., Funama, F., Mettus, D., Beddrich, L., Franz, C., Shen, J., Parnell, S. R., Dalgliesh, R. M., Loyd, M., Geerits, N., Ortiz, G., Pfleiderer, C., Pynn, R.

Publikováno v: Physical Review Applied 22, L031005 (2024)

Intra-particle entanglement of individual particles such as neutrons could enable another class of scattering probes that are sensitive to entanglement in quantum systems and materials. In this work, we present experimental results demonstrating quan

Externí odkaz: http://arxiv.org/abs/2404.07967

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Entangled-Beam Reflectometry and Goos-H\'anchen Shift

Autor: Thien, Q. Le, Pynn, R., Ortiz, G.

We introduce the technique of Entangled-Beam Reflectometry for extracting spatially correlated (magnetic or non-magnetic) information from material surfaces or thin films. Our amplitude- and phase-sensitive technique exploits the coherent nature of a

Externí odkaz: http://arxiv.org/abs/2401.11586

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Topological Orders Beyond Topological Quantum Field Theories

Autor: Vojta, P., Ortiz, G., Nussinov, Z.

Systems displaying quantum topological order feature robust characteristics that are very attractive to quantum computing schemes. Topological quantum field theories have proven to be powerful in capturing the quintessential attributes of systems dis

Externí odkaz: http://arxiv.org/abs/2311.03353

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Neutron spin echo is a 'quantum tale of two paths'

Autor: McKay, S., Irfan, A. A. M., Thien, Q. Le, Geerits, N., Parnell, S. R., Dalgliesh, R. M., Lavrik, N. V., Kravchenko, I. I., Ortiz, G., Pynn, R.

We describe an experiment that strongly supports a two-path interferometric model in which the spin-up and spin-down components of each neutron propagate coherently along spatially separated parallel paths in a typical neutron spin echo small angle s

Externí odkaz: http://arxiv.org/abs/2309.03987

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Quasicriticality explains variability of human neural dynamics across life span

Autor: Fosque, L. J., Alipour, A., Zare, M., Williams-Garcia, R. V., Beggs, J. M., Ortiz, G.

Ageing impacts the brain's structural and functional organization and over time leads to various disorders, such as Alzheimer's disease and cognitive impairment. The process also impacts sensory function, bringing about a general slowing in various p

Externí odkaz: http://arxiv.org/abs/2209.02592

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Partons as unique ground states of quantum Hall parent Hamiltonians: The case of Fibonacci anyons

Autor: Ahari, M. Tanhayi, Bandyopadhyay, S., Nussinov, Z., Seidel, A., Ortiz, G.

We present microscopic, multiple Landau level, (frustration-free and positive semi-definite) parent Hamiltonians whose ground states, realizing different quantum Hall fluids, are parton-like and whose excitations display either Abelian or non-Abelian

Externí odkaz: http://arxiv.org/abs/2204.09684

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