2016/12/08 by Rui Sampaio, Samu Suomela, Rebecca Schmidt +2
Computer Science · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Amplitude #Computer science #Context (archaeology) #Coupling (piping) #Degree (music) #Materials science #Mathematical analysis #Mathematics #Measure (data warehouse) #Monotonic function #Physics #Quantum #Quantum Information and Cryptography #Quantum mechanics #Qubit #Spectroscopy and Quantum Chemical Studies #Statistical physics #quant-ph
paper · pdf · doi:10.1103/physreva.95.022120
published as Phys. Rev. A 95, 022120 (2017) · 7 pages, 5 figures, 1 appendix, minor corrections
arxiv created 2016/12/08 · openalex publication_date 2017/02/21 · arxiv updated 2017/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study non-Markovian effects present in a driven qubit coupled to a finite environment using a recently proposed model developed in the context of calorimetric measurements of open quantum systems. To quantify the degree of non-Markovianity we use the Breuer-Laine-Piilo (BLP) measure [H.-P. Breuer, Phys. Rev. Lett. 103, 210401 (2009)]. We show that information backflow only occurs in the case of driving, in which case we investigate the dependence of memory effects on the environment size, driving amplitude, and coupling to the environment. We show that the degree of non-Markovianity strongly depends on the ratio between the driving amplitude and the coupling strength. We also show that the degree of non-Markovianity does not decrease monotonically as a function of the environment size.