6.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR493 papers
- National Institute for AstrophysicsIT482 papers
- Instituto de Astrofísica de CanariasES462 papers
- Aalto UniversityFI432 papers
- University of PaduaIT407 papers
- Universidad de La LagunaES383 papers
- California Institute of TechnologyUS356 papers
- Stockholm UniversitySE351 papers
- Turku Centre for Computer ScienceFI349 papers
- Institute of Space SciencesES329 papers
- European Southern ObservatoryCL317 papers
- Osservatorio Astronomico di PadovaIT317 papers
16 papers · 2 filters
Continuous-time quantum walks on dynamical percolation graphs
Claudia Benedetti, Matteo A. C. Rossi, Matteo G. A. Paris
We address continuous-time quantum walks on graphs in the presence of time- and space-dependent noise. Noise is modeled as generalized dynamical percolation, i.e. classical time-de…
Obtaining conclusive information from incomplete experimental quantum tomography
Henri Lyyra, Tom Kuusela, Teiko Heinosaari
We demonstrate that incomplete quantum tomography can give conclusive information in experimental realizations. We divide the state space into a union of multiple disjoint subsets…
Quantum Incompatibility Witnesses
Claudio Carmeli, Teiko Heinosaari, Alessandro Toigo
We demonstrate that quantum incompatibility can always be detected by means of a state discrimination task with partial intermediate information. This is done by showing that only…
Non-Markovianity is not a resource for quantum spatial search on a star graph subject to generalized percolation
Matteo A. C. Rossi, Marco Cattaneo, Matteo G. A. Paris +1
Continuous-time quantum walks may be exploited to enhance spatial search, i.e., for finding a marked element in a database structured as a complex network. However, in practical im…
Entanglement Protection via Periodic Environment Resetting in Continuous Time Quantum Dynamical Processes
Thomas Bullock, Francesco Cosco, Marwan Haddara +8
The temporal evolution of entanglement between a noisy system and an ancillary system is analyzed in the context of continuous time open quantum system dynamics. Focusing on a coup…
Whenever a quantum environment emerges as a classical system, it behaves like a measuring apparatus
Caterina Foti, Teiko Heinosaari, Sabrina Maniscalco +1
We study the dynamics of a quantum system with an environment made of elementary quantum components. We aim at answering the following questions: can the evolution of $…
Effective methods for constructing extreme quantum observables
Erkka Haapasalo, Juha-Pekka Pellonpaa
We study extreme points of the set of finite-outcome positive-operator-valued measures (POVMs) on finite-dimensional Hilbert spaces and particularly the possible ranks of the effec…
Memory effects in a quasi-periodic Fermi lattice
Francesco Cosco, Sabrina Maniscalco
We investigate a system of fermions trapped in a quasi-periodic potential from an open quantum system theory perspective, designing a protocol in which an impurity atom (a two leve…
Quantum spatial search on graphs subject to dynamical noise
Marco Cattaneo, Matteo A. C. Rossi, Matteo G. A. Paris +1
We address quantum spatial search on graphs and its implementation by continuous-time quantum walks in the presence of dynamical noise. In particular, we focus on search on the com…
Post-processing minimal joint observables
Teiko Heinosaari, Yui Kuramochi
A finite set of quantum observables (positive operator valued measures) is called compatible if these observables are marginals of a some observable, called a joint observable of t…
No-free-information principle in general probabilistic theories
Teiko Heinosaari, Leevi Leppäjärvi, Martin Plávala
In quantum theory, the no-information-without-disturbance and no-free-information theorems express that those observables that do not disturb the measurement of another observable…
Unruh effect and information flow
Boris Sokolov, Jorma Louko, Sabrina Maniscalco +1
We study memory effects as information backflow for an accelerating two-level detector weakly interacting with a scalar field in the Minkowski vacuum. This is the framework of the…
State discrimination with post-measurement information and incompatibility of quantum measurements
Claudio Carmeli, Teiko Heinosaari, Alessandro Toigo
We discuss the following variant of the standard minimum error state discrimination problem: Alice picks the state she sends to Bob among one of several disjoint state ensembles, a…
Antidistinguishability of Pure Quantum States
Teiko Heinosaari, Oskari Kerppo
The Pusey-Barrett-Rudolph theorem has recently provoked a lot of discussion regarding the reality of the quantum state. In this article we focus on a property called antidistinguis…
Revealing memory effects in phase-covariant quantum master equations
Jose Teittinen, Henri Lyyra, Boris Sokolov +1
We study and compare the sensitivity of multiple non-Markovianity indicators for a qubit subjected to general phase-covariant noise. For each of the indicators, we derive analytica…
Restoring Heisenberg scaling in noisy quantum metrology by monitoring the environment
Francesco Albarelli, Matteo A. C. Rossi, Dario Tamascelli +1
We study quantum frequency estimation for qubits subjected to independent Markovian noise, via strategies based on time-continuous monitoring of the environment. Both physical…