Quantum estimation and remote charge sensing with a hole-spin qubit in silicon

Autor: Gaia Forghieri, Andrea Secchi, Andrea Bertoni, Paolo Bordone, Filippo Troiani

Publikováno v: Physical Review Research, Vol 5, Iss 4, p 043159 (2023)

Hole-spin qubits in semiconductors represent a mature platform for quantum technological applications. Here we consider their use as quantum sensors, and specifically for inferring the presence and estimating the distance from the qubit of a remote c

Externí odkaz: https://doaj.org/article/f1c068d8da0943878b9760783ae6f540

A Proposal for Evading the Measurement Uncertainty in Classical and Quantum Computing: Application to a Resonant Tunneling Diode and a Mach-Zehnder Interferometer

Autor: Devashish Pandey, Laura Bellentani, Matteo Villani, Guillermo Albareda, Paolo Bordone, Andrea Bertoni, Xavier Oriols

Publikováno v: Applied Sciences, Vol 9, Iss 11, p 2300 (2019)

Measuring properties of quantum systems is governed by a stochastic (collapse or state-reduction) law that unavoidably yields an uncertainty (variance) associated with the corresponding mean values. This non-classical source of uncertainty is known t

Externí odkaz: https://doaj.org/article/52dd4faf41d642969170bde2465acb47

Time-dependent transport in graphene Mach-Zender interferometers

Autor: Paolo Bordone, Andrea Bertoni, Gaia Forghieri

Publikováno v: Physical Review B. 106

Graphene nanoribbons provide an ideal platform for electronic interferometry in the Integer Quantum Hall regime. Here, we solve the time-dependent four-component Schroedinger equation for single carriers in graphene and expose several dynamical effec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1f85942c79c6965a0b58664c19f6b33
https://doi.org/10.1103/physrevb.106.165402

Interacting holes in Si and Ge double quantum dots: from a multiband approach to an effective-spin picture

Autor: Andrea Secchi, Laura Bellentani, Andrea Bertoni, Filippo Troiani

Publikováno v: Physical Review B
Physical Review B 104 (2021): 035302-1–035302-15. doi:10.1103/PhysRevB.104.035302
info:cnr-pdr/source/autori:Secchi A.; Bellentani L.; Bertoni A.; Troiani F./titolo:Interacting holes in Si and Ge double quantum dots: From a multiband approach to an effective-spin picture/doi:10.1103%2FPhysRevB.104.035302/rivista:Physical Review B/anno:2021/pagina_da:035302-1/pagina_a:035302-15/intervallo_pagine:035302-1–035302-15/volume:104

The states of two electrons in tunnel-coupled semiconductor quantum dots can be effectively described in terms of a two-spin Hamiltonian with an isotropic Heisenberg interaction. A similar description needs to be generalized in the case of holes due

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81adaa0fd69a21263c20463e3f742755
http://arxiv.org/abs/2104.07730

Anisotropy of the spin-orbit coupling driven by a magnetic field in InAs nanowires

Autor: Guido Goldoni, Paweł Wójcik, Andrea Bertoni

Publikováno v: Physical Review B 103 (2021): 085434-1–085434-12. doi:10.1103/PhysRevB.103.085434
info:cnr-pdr/source/autori:Wojcik P.; Bertoni A.; Goldoni G./titolo:Anisotropy of the spin-orbit coupling driven by a magnetic field in InAs nanowires/doi:10.1103%2FPhysRevB.103.085434/rivista:Physical Review B/anno:2021/pagina_da:085434-1/pagina_a:085434-12/intervallo_pagine:085434-1–085434-12/volume:103

We use the $\mathbf{k} \cdot \mathbf{p}$ theory and the envelope function approach to evaluate the Rashba spin-orbit coupling induced in a semiconductor nanowire by a magnetic field at different orientations, taking explicitely into account the prism

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cbd131421c08f1b6e43fa0ccb68a482
https://hdl.handle.net/11380/1239460