Quantum speed limits: from Heisenberg's uncertainty principle to optimal quantum control

S Deffner, S Campbell - Journal of Physics A: Mathematical and …, 2017 - iopscience.iop.org
One of the most widely known building blocks of modern physics is Heisenberg's
indeterminacy principle. Among the different statements of this fundamental property of the …

Macroscopic quantum states: Measures, fragility, and implementations

F Fröwis, P Sekatski, W Dür, N Gisin… - Reviews of Modern Physics, 2018 - APS
Large-scale quantum effects have always played an important role in the foundations of
quantum theory. With recent experimental progress and the aspiration for quantum …

Unifying speed limit, thermodynamic uncertainty relation and Heisenberg principle via bulk-boundary correspondence

Y Hasegawa - Nature Communications, 2023 - nature.com
The bulk-boundary correspondence provides a guiding principle for tackling strongly
correlated and coupled systems. In the present work, we apply the concept of the bulk …

Detecting large quantum Fisher information with finite measurement precision

F Fröwis, P Sekatski, W Dür - Physical review letters, 2016 - APS
We propose an experimentally accessible scheme to determine the lower bounds on the
quantum Fisher information (QFI), which ascertains multipartite entanglement or usefulness …

Contact geometry and thermodynamics

A Bravetti - International Journal of Geometric Methods in Modern …, 2019 - World Scientific
These are the lecture notes for the course given at the “XXVII International Fall Workshop on
Geometry and Physics” held in Seville (Spain) in September 2018. We review the geometric …

Tight bounds on the simultaneous estimation of incompatible parameters

JS Sidhu, Y Ouyang, ET Campbell, P Kok - Physical Review X, 2021 - APS
The estimation of multiple parameters in quantum metrology is important for a vast array of
applications in quantum information processing. However, the unattainability of fundamental …

Metrological nonlinear squeezing parameter

M Gessner, A Smerzi, L Pezzè - Physical review letters, 2019 - APS
The well-known metrological linear squeezing parameters (such as quadrature or spin
squeezing) efficiently quantify the sensitivity of Gaussian states. Yet, these parameters are …

Uncertainty relations with the variance and the quantum Fisher information based on convex decompositions of density matrices

G Tóth, F Fröwis - Physical Review Research, 2022 - APS
We present several inequalities related to the Robertson-Schrödinger uncertainty relation. In
all these inequalities, we consider a decomposition of the density matrix into a mixture of …

Quantum states with a positive partial transpose are useful for metrology

G Tóth, T Vértesi - Physical review letters, 2018 - APS
We show that multipartite quantum states that have a positive partial transpose with respect
to all bipartitions of the particles can outperform separable states in linear interferometers …

Introduction to quantum entanglement in many-body systems

AK Srivastava, G Müller-Rigat, M Lewenstein… - New Trends and …, 2024 - Springer
The quantum mechanics formalism introduced new revolutionary concepts challenging our
everyday perceptions. Arguably, quantum entanglement, which explains correlations that …