138 citations
- Politecnico di MilanoIT7 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di MilanoIT5 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT2 papers
- Istituto Nazionale per la Fisica della MateriaIT2 papers
- Scuola Normale SuperioreIT2 papers
- University of BergamoIT2 papers
- University of CopenhagenDK2 papers
- Algebra Bernays UniversityHR1 paper
- Boğaziçi UniversityTR1 paper
- Budker Institute of Nuclear PhysicsRU1 paper
- Charles UniversityCZ1 paper
- DePaul UniversityUS1 paper
8 papers · 1 filter
Quantum measurements and entropic bounds on information transmission
Alberto Barchielli, Giancarlo Lupieri
While a positive operator valued measure gives the probabilities in a quantum measurement, an instrument gives both the probabilities and the a posteriori states. By interpreting t…
Multimode entanglement and telecloning in a noisy environment
A. Ferraro, M. G. A. Paris
We address generation, propagation and application of multipartite continuous variable entanglement in a noisy environment. In particular, we focus our attention on the multimode e…
Effects of single-qubit quantum noise on entanglement purification
Giuliano Benenti, Sara Felloni, Giuliano Strini
We study the stability under quantum noise effects of the quantum privacy amplification protocol for the purification of entanglement in quantum cryptography. We assume that the E9…
Instruments and mutual entropies in quantum information
Alberto Barchielli, Giancarlo Lupieri
General quantum measurements are represented by instruments. In this paper the mathematical formalization is given of the idea that an instrument is a channel which accepts a quant…
Cloning transformations in spin networks without external control
G. De Chiara, R. Fazio, C. Macchiavello +2
In this paper we present an approach to quantum cloning with unmodulated spin networks. The cloner is realized by a proper design of the network and a choice of the coupling betwee…
Instrumental processes, entropies, information in quantum continual measurements
Alberto Barchielli, Giancarlo Lupieri
In this paper we will give a short presentation of the quantum Levy-Khinchin formula and of the formulation of quantum continual measurements based on stochastic differential equat…