Zobrazeno 1 - 10
of 329
pro vyhledávání: '"Viola, Lorenza"'
Autor:
Burgelman, Michiel, Wonglakhon, Nattaphong, Bernal-García, Diego N., Paz-Silva, Gerardo A., Viola, Lorenza
Realistic multi-qubit noise processes often result in error mechanisms that are not captured by the probabilistic, Markovian error models commonly employed in circuit-level analyses of quantum fault-tolerance. By working within an open-quantum system
Externí odkaz:
http://arxiv.org/abs/2407.04766
Publikováno v:
Physical Review A 110, 032207 (2024)
We provide a framework for understanding dynamical metastability in open many-body systems of free bosons, whereby the dynamical stability properties of the system in the infinite-size (thermodynamic) limit may sharply differ from those of any finite
Externí odkaz:
http://arxiv.org/abs/2405.08873
Publikováno v:
Phys. Rev. Applied 22, 024074, Published 29 August 2024
Characterizing temporally correlated (``non-Markovian'') noise is a key prerequisite for achieving noise-tailored error mitigation and optimal device performance. Quantum noise spectroscopy can afford quantitative estimation of the noise spectral fea
Externí odkaz:
http://arxiv.org/abs/2402.12361
Publikováno v:
Physical Review B 108, 214312 (2023)
Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their associated edge-localized excitations, have long evaded the grasp of condensed-matter and AMO physics. In this work, building on our initial exploration [PRL 127
Externí odkaz:
http://arxiv.org/abs/2306.13711
We consider entanglement-assisted frequency estimation by Ramsey interferometry, in the presence of dephasing noise from spatiotemporally correlated environments.By working in the widely employed local estimation regime, we show that even for infinit
Externí odkaz:
http://arxiv.org/abs/2305.00954
Both the physics and applications of fermionic symmetry-protected topological phases rely heavily on a principle known as bulk-boundary correspondence, which predicts the emergence of protected boundary-localized energy excitations (boundary states)
Externí odkaz:
http://arxiv.org/abs/2304.03524
We show the usefulness of frame-based characterization and control [PRX Quantum 2, 030315 (2021)] for non-Markovian open quantum systems subject to classical non-Gaussian dephasing. By focusing on the paradigmatic case of random telegraph noise and w
Externí odkaz:
http://arxiv.org/abs/2304.03735
Autor:
Cupo, Andrew, Heath, Joshuah T., Cobanera, Emilio, Whitfield, James D., Ramanathan, Chandrasekhar, Viola, Lorenza
Optical conductivity measurements may provide access to distinct signatures of Floquet electronic phases, which are described theoretically by their quasienergy band structures. We characterize experimental observables of the Floquet graphene antidot
Externí odkaz:
http://arxiv.org/abs/2303.02261
Autor:
Wang, Guoqing, Zhu, Yuan, Li, Boning, Li, Changhao, Viola, Lorenza, Cooper, Alexandre, Cappellaro, Paola
Publikováno v:
Quantum Sci. Technol. 9 035006 (2024)
We introduce and experimentally demonstrate a quantum sensing protocol to sample and reconstruct the auto-correlation of a noise process using a single-qubit sensor under digital control modulation. This Walsh noise spectroscopy method exploits simpl
Externí odkaz:
http://arxiv.org/abs/2212.09216
Publikováno v:
New Journal of Physics 24, 103011 (2022)
We study the estimation precision attainable by entanglement-enhanced Ramsey interferometry in the presence of spatiotemporally correlated non-classical noise. Our analysis relies on an exact expression of the reduced density matrix of the qubit prob
Externí odkaz:
http://arxiv.org/abs/2204.10798