Adapted projection operator technique for the treatment of initial correlations

A Trevisan, A Smirne, N Megier, B Vacchini - Physical Review A, 2021 - APS
Standard theoretical descriptions of the dynamics of open quantum systems rely on the
assumption that the correlations with the environment can be neglected at some reference …

Interferometric approach to open quantum systems and non-Markovian dynamics

O Siltanen, T Kuusela, J Piilo - Physical Review A, 2021 - APS
We combine the dynamics of open quantum systems with interferometry and interference,
introducing the concept of an open system interferometer. By considering a single photon in …

Experimental snapshot verification of non-Markovianity by quantum probing of convex coefficients

H Lyyra, O Siltanen, J Piilo, S Banerjee, T Kuusela - Physical Review A, 2022 - APS
We apply the recently proposed quantum probing protocols with an unknown system-probe
coupling to probe the convex coefficients in mixtures of commuting states. By using two …

Engineering of Hong-Ou-Mandel interference with effective noise

O Siltanen, T Kuusela, J Piilo - Physical Review A, 2021 - APS
The Hong-Ou-Mandel effect lies at the heart of quantum interferometry, having multiple
applications in the field of quantum information processing and no classical counterpart …

Breaking the quantum Cram\'er-Rao bound with non-Markovian memory effects

O Siltanen - arXiv preprint arXiv:2211.05142, 2022 - arxiv.org
Linear optics provides versatile means to simulate and control the dynamics of open
quantum systems. Here, the polarization and frequency of photons often represent the …

Non-Markovian dynamics of a two-level system in a bosonic bath and a Gaussian fluctuating environment with finite correlation time

VA Mikhailov, NV Troshkin - Physical Review A, 2021 - APS
The character of evolution of an open quantum system is often encoded in the correlation
function of the environment or, equivalently, in the spectral density function of the interaction …

Experimental quantum probing measurements with no knowledge of the system-probe interaction

H Lyyra, O Siltanen, J Piilo, S Banerjee, T Kuusela - Physical Review A, 2020 - APS
In any natural science, measurements are the essential link between theory and observable
reality. Is it possible to obtain accurate and relevant information via measurement whose …

Experimental Snapshot Verification of non-Markovianity with Unknown System-Probe Coupling

H Lyyra, O Siltanen, J Piilo, S Banerjee… - arXiv preprint arXiv …, 2021 - arxiv.org
We apply the recently proposed quantum probing protocols with an unknown system-probe
coupling to probe the convex coefficients in mixtures of commuting states. By using two …

On the use of total state decompositions for the study of reduced dynamics

A Smirne, N Megier, B Vacchini - Open Systems & Information …, 2022 - World Scientific
The description of the dynamics of an open quantum system in the presence of initial
correlations with the environment needs different mathematical tools than the standard …

[PDF][PDF] CHARACTERIZING FREQUENCY CORRELATIONS VIA POLARIZATION MEASUREMENTS

J Moreno - 2023 - trepo.tuni.fi
Developing techniques for characterizing quantum mechanical systems has been a major
topic of research, especially in recent years, as quantum technologies, such as quantum …