Quantifying quantum coherence of optical cat states

M Zhang, H Kang, M Wang, F Xu, X Su… - Photonics Research, 2021 - opg.optica.org
The optical cat state plays an essential role in quantum computation and quantum
metrology. Here, we experimentally quantify quantum coherence of an optical cat state by …

When is a non-Markovian quantum process classical?

S Milz, D Egloff, P Taranto, T Theurer, MB Plenio… - Physical Review X, 2020 - APS
More than a century after the inception of quantum theory, the question of which traits and
phenomena are fundamentally quantum remains under debate. Here, we give an answer to …

Dynamic conditioning of two particle discrete-time quantum walks

F Pegoraro, P Held, S Barkhofen, B Brecht… - Physica …, 2023 - iopscience.iop.org
In real photonic quantum systems losses are an unavoidable factor limiting the scalability to
many modes and particles, restraining their application in fields as quantum information and …

On the classicality of quantum dephasing processes

D Lonigro, D Chruściński - Frontiers in Quantum Science and …, 2022 - frontiersin.org
We analyze the multitime statistics associated with pure dephasing systems repeatedly
probed with sharp measurements, and search for measurement protocols whose statistics …

Connecting commutativity and classicality for multitime quantum processes

F Sakuldee, P Taranto, S Milz - Physical Review A, 2022 - APS
Understanding the demarcation line between classical and quantum is an important issue in
modern physics. The development of such an understanding requires a clear picture of the …

Transfer-tensor description of memory effects in open-system dynamics and multi-time statistics

S Gherardini, A Smirne, SF Huelga… - Quantum Science and …, 2022 - iopscience.iop.org
The non-Markovianity of an arbitrary open quantum system is analyzed in reference to the
multi-time statistics given by its monitoring at discrete times. On the one hand, we exploit the …

Accessible coherence in open quantum system dynamics

MG Díaz, B Desef, M Rosati, D Egloff, J Calsamiglia… - Quantum, 2020 - quantum-journal.org
Quantum coherence generated in a physical process can only be cast as a potentially useful
resource if its effects can be detected at a later time. Recently, the notion of non-coherence …

[HTML][HTML] Steered quantum coherence and quantum Fisher information in spin-chain system

BL Ye, YK Wang, SM Fei - Results in Physics, 2023 - Elsevier
In this paper, we investigate steered quantum coherence, ie, the l 1 norm of steered
coherence and the relative entropy of steered coherence, and the quantum Fisher …

Measurement-Based Quantum Walks on High-Dimensional Graphs

S De, V Ansari, J Sperling, S Barkhofen… - arXiv preprint arXiv …, 2022 - arxiv.org
Quantum walks (QWs) on high-dimensional and reconfigurable graphs can invoke the full
potential of quantum simulation and information processing tasks. However, experimental …

[PDF][PDF] Thermodynamics, Complexity, and Multi-Time Phenomena

P Taranto - 2022 - tarantophilip.github.io
The dialectic relationship between physics and information is perhaps best exemplified
through thermodynamics: A theory that connects our knowledge of the world to our capability …