21 citations · 102 across the 13 of their papers we have counts for
13 papers
Quantum-inspired exoplanet detection in the presence of experimental imperfections
Tomasz Linowski, Konrad Schlichtholz, Giacomo Sorelli
Ideal spatial demultiplexing (SPADE) is proven to be a quantum-optimal tool for exoplanet detection, i.e., asymmetric source discrimination. However, recent investigations into the…
Spectral and temporal metrology with bandlimited functions and finite-time measurements
Łukasz Rudnicki, Tomasz Linowski
We perform an analysis supplementing the metrology toolbox in the time-frequency domain. While the relevant time-frequency-based metrological protocols can be borrowed from the spa…
Relating the Glauber-Sudarshan, Wigner and Husimi quasiprobability distributions operationally through the quantum limited amplifier and attenuator channels
Tomasz Linowski, Łukasz Rudnicki
The Glauber-Sudarshan, Wigner and Husimi quasiprobability distributions are indispensable tools in quantum optics. However, although mathematical relations between them are well es…
Classicality of the Bogoliubov transformations and the dynamical Casimir effect through the reduced state of the field
Tomasz Linowski, Łukasz Rudnicki
We use the reduced state of the field formalism [Entropy 21, 705 (2019)] to derive conditions under which a Bogoliubov transformation can be considered semi-classical. We apply thi…
Practical tests for sub-Rayleigh source discriminations with imperfect demultiplexers
Konrad Schlichtholz, Tomasz Linowski, Mattia Walschaers +3
Quantum-optimal discrimination between one and two closely separated light sources can be achieved by ideal spatial-mode demultiplexing, simply monitoring whether a photon is detec…
Spectral stabilizability
Tomasz Linowski, Łukasz Rudnicki, Clemens Gneiting
Decoherence represents a major obstacle towards realizing reliable quantum technologies. Identifying states that can be uphold against decoherence by purely coherent means, i.e., {…
Application range of crosstalk-affected spatial demultiplexing for resolving separations between unbalanced sources
Tomasz Linowski, Konrad Schlichtholz, Giacomo Sorelli +4
Superresolution is one of the key issues at the crossroads of contemporary quantum optics and metrology. Recently, it was shown that for an idealized case of two balanced sources,…
Formal relation between Pegg-Barnett and Paul quantum phase frameworks
Tomasz Linowski, Konrad Schlichtholz, Łukasz Rudnicki
The problem of defining a hermitian quantum phase operator is nearly as old as quantum mechanics itself. Throughout the years, a number of solutions was proposed, ranging from abst…
Reduced state of the field and classicality of quantum Gaussian evolution
Tomasz Linowski, Łukasz Rudnicki
The notion of classicality of quantum evolution of light is an object of both conceptual and practical importance. The main goal of this work is to derive the exact conditions for…
Dissipative evolution of quantum Gaussian states
Tomasz Linowski, Alexander Teretenkov, Łukasz Rudnicki
Recent works on quantum resource theories of non-Gaussianity, which are based upon the type of tools available in contemporary experimental settings, put Gaussian states and their…
Stabilizing entanglement in two-mode Gaussian states
Tomasz Linowski, Clemens Gneiting, Łukasz Rudnicki
We analyze the stabilizability of entangled two-mode Gaussian states in three benchmark dissipative models: local damping, dissipators engineered to preserve two-mode squeezed stat…
Entangling power of multipartite unitary gates
Tomasz Linowski, Grzegorz Rajchel-Mieldzioć, Karol Życzkowski
We study the entangling properties of multipartite unitary gates with respect to the measure of entanglement called one-tangle. Putting special emphasis on the case of three partie…
Bipartite unitary gates and billiard dynamics in the Weyl chamber
Antonio Mandarino, Tomasz Linowski, Karol Życzkowski
Long time behavior of a unitary quantum gate , acting sequentially on two subsystems of dimension each, is investigated. We derive an expression describing an arbitrary iter…