Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Cosco, F."'
We introduce an implementation of Bayesian measurement error mitigation tailored for multiqubit experiments on near-term quantum devices. Our approach leverages complete information from the readout signal, which is available before any binary state
Externí odkaz:
http://arxiv.org/abs/2408.00869
This work reports the study of the spectral properties of an open interacting system by solving the Generalized Kadanoff-Baym Ansatz (GKBA) master equation for the single-particle density matrix, namely the time-diagonal lesser Green function. To ben
Externí odkaz:
http://arxiv.org/abs/2402.15378
Autor:
Cosco, F., Gullo, N. Lo
Publikováno v:
Phys. Rev. A 108, L060402 (2023)
We introduce an efficient and accurate readout measurement scheme for single and multi-qubit states. Our method uses Bayesian inference to build an assignment probability distribution for each qubit state based on a reference characterization of the
Externí odkaz:
http://arxiv.org/abs/2302.07725
Autor:
Gupta, R., Cosco, F., Malik, R. S., Chen, X., Saha, S., Ghosh, A., Pohlmann, T., Mardegan, J. R. L., Francoual, S., Stefanuik, R., Soderstrom, J., Sanyal, B., Karis, O., Svedlindh, P., Oppeneer, P. M., Knut, R.
Using element-specific measurements of the ultrafast demagnetization of Ru/Fe$_{65}$Co$_{35}$ heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asymmetry) resulting from ultrafast spin currents emanating from the demag
Externí odkaz:
http://arxiv.org/abs/2205.07974
Publikováno v:
Phys. Rev. A 103, 061501 (2021)
Squeezing is a resource that enables precision enhancements in quantum metrology and can be used as a basis for the generation of entanglement by linear optics. While strong squeezing is challenging to generate in optical fields, here we present simp
Externí odkaz:
http://arxiv.org/abs/2012.07815
We investigate the spectral properties of an open interacting system by solving the Generalized Kadanoff-Baym Ansatz (GKBA) master equation for the single-particle density matrix, namely the time-diagonal lesser Green's function. To benchmark its val
Externí odkaz:
http://arxiv.org/abs/2007.08901
Publikováno v:
Phys. Rev. B 101, 144303 (2020)
We investigate the dynamical properties of an interacting many-body system with a non-trivial energy potential landscape that may induce a singular continuous single-particle energy spectrum. Focusing on the Aubry-Andr\'e model, whose anomalous trans
Externí odkaz:
http://arxiv.org/abs/1809.10524
Publikováno v:
In Journal of Sound and Vibration 27 October 2022 537
Publikováno v:
Phys. Rev. A 95, 063615 (2017)
We present an in-depth study of the non-equilibrium statistics of the irreversible work produced during sudden quenches in proximity to the structural linear-zigzag transition of ion Coulomb crystals in 1+1 dimensions. By employing both an analytical
Externí odkaz:
http://arxiv.org/abs/1704.08253
Publikováno v:
Phys. Rev. A 93, 053619 (2016)
Estimating the temperature of a cold quantum system is difficult. Usually, one measures a well-understood thermal state and uses that prior knowledge to infer its temperature. In contrast, we introduce a method of thermometry that assumes minimal kno
Externí odkaz:
http://arxiv.org/abs/1508.02992