10.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT156 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT146 papers
- University of InsubriaIT88 papers
- University of MilanIT85 papers
- University of TrentoIT85 papers
- Politecnico di TorinoIT78 papers
- University of FlorenceIT74 papers
- University of GenoaIT69 papers
- Centre National de la Recherche ScientifiqueFR65 papers
- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT65 papers
- National Research CouncilLK58 papers
- University of SalernoIT56 papers
21 papers · 2 filters
Contextual, Optimal and Universal Realization of the Quantum Cloning Machine and of the NOT gate
Francesco De Martini, Daniele Pelliccia, Fabio Sciarrino
A simultaneous realization of the Universal Optimal Quantum Cloning Machine (UOQCM) and of the Universal-NOT gate by a quantum injected optical parametric amplification (QIOPA), is…
Teleportation of the U-NOT Gate and Quantum Cloning: a Computational Network and Experimental Realization
F. Sciarrino, C. Sias, M. Ricci +1
We present a computational circuit which realizes contextually the Tele-UNOT gate and the universal optimal quantum cloning machine (UOQCM). We report the experimental realization…
Ground-State Entanglement in Interacting Bosonic Graphs
Paolo Giorda, Paolo Zanardi
We consider a collection of bosonic modes corresponding to the vertices of a graph Quantum tunneling can occur only along the edges of and a local self-interaction term is…
Teleportation scheme implementing contextually the Universal Optimal Quantum Cloning Machine and the Universal Not Gate. Complete experimental realization
M. Ricci, F. Sciarrino, C. Sias +1
By a significant modification of the standard protocol of quantum state Teleportation two processes ''forbidden'' by quantum mechanics in their exact form, the Universal NOT gate a…
Entanglement Echoes in Quantum Computation
Davide Rossini, Giuliano Benenti, Giulio Casati
We study the stability of entanglement in a quantum computer implementing an efficient quantum algorithm, which simulates a quantum chaotic dynamics. For this purpose, we perform a…
Stability of Quantum Motion: Beyond Fermi-golden-rule and Lyapunov decay
Wen-ge Wang, G. Casati, Baowen Li
We study, analytically and numerically, the stability of quantum motion for a classically chaotic system. We show the existence of different regimes of fidelity decay which deviate…
Universal quantum control in irreducible state-space sectors: application to bosonic and spin-boson systems
Paolo Giorda, Paolo Zanardi, Seth Lloyd
We analyze the dynamical-algebraic approach to universal quantum control introduced in P. Zanardi, S. Lloyd, quant-ph/0305013. The quantum state-space encoding information…
Teleportation in a noisy environment: a quantum trajectories approach
Gabriel G Carlo, Giuliano Benenti, Giulio Casati
We study the fidelity of quantum teleportation for the situation in which quantum logic gates are used to provide the long distance entanglement required in the protocol, and where…
Entangled states maximize the two qubit channel capacity for some Pauli channels with memory
C. Macchiavello, G. M. Palma, S. Virmani
We prove that a general upper bound on the maximal mutual information of quantum channels is saturated in the case of Pauli channels with an arbitrary degree of memory. For a subse…
Decoherence as a Probe of Coherent Quantum Dynamics
Michael B. d'Arcy, Rachel M. Godun, Gil S. Summy +4
The effect of decoherence, induced by spontaneous emission, on the dynamics of cold atoms periodically kicked by an optical lattice is experimentally and theoretically studied. Ide…
Experimental Detection of Entanglement with Polarized Photons
M. Barbieri, F. De Martini, G. Di Nepi +3
We report on the first experimental realization of the entanglement witness for polarization entangled photons. It represents a recently discovered significant quantum information…
Three-mode entanglement by interlinked nonlinear interactions in optical media
A. Ferraro, M. G. A. Paris, A. Allevi +3
We address the generation of fully inseparable three-mode entangled states of radiation by interlinked nonlinear interactions in media. We show how three-mode entanglemen…
Universal control of quantum subspaces and subsystems
P. Zanardi, S. Lloyd
We describe a broad dynamical-algebraic framework for analyzing the quantum control properties of a set of naturally available interactions. General conditions under which universa…
Mode Entanglement and Entangling power in Bosonic Graphs
Paolo Giorda, Paolo Zanardi
We analyze the quantum entanglement properties of bosonic particles hopping over graph structures.Mode-entanglement of a graph vertex with respect the rest of the graph is generate…
Optimal estimation of multiple phases
Chiara Macchiavello
We study the issue of simultaneous estimation of several phase shifts induced by commuting operators on a quantum state. We derive the optimal positive operator-valued measure corr…
Teleportation scheme implementing the Universal Optimal Quantum Cloning Machine and the Universal NOT gate
M. Ricci, F. Sciarrino, C. Sias +1
The universal quantum cloning machine and the universal NOT gate acting on a single qubit can be implemented very generally by slightly modifying the protocol of quantum state tele…
Contextual Realization of the Universal Quantum Cloning Machine and of the Universal-NOT gate by Quantum Injected Optical Parametric Amplification
D. Pelliccia, V. Schettini, F. Sciarrino +2
A simultaneous, contextual experimental demonstration of the two processes of cloning an input qubit and of flipping it into the orthogonal qubit is reported. The adopted experimen…
Optimal phase covariant cloning for qubits and qutrits
G. M. D'Ariano, C. Macchiavello
We consider cloning transformations of equatorial qubits and qutrits, with the transformation covariant for rotation of the phases. The optimal cloning maps are derived without sim…
Some Properties of the Computable Cross Norm Criterion for Separability
Oliver Rudolph
The computable cross norm (CCN) criterion is a new powerful analytical and computable separability criterion for bipartite quantum states, that is also known to systematically dete…
Holonomic quantum gates: A semiconductor-based implementation
Paolo Solinas, Paolo Zanardi, Nino Zangh\`ı +1
We propose an implementation of holonomic (geometrical) quantum gates by means of semiconductor nanostructures. Our quantum hardware consists of semiconductor macroatoms driven by…
Non-adiabatic geometrical quantum gates in semiconductor quantum dots
Paolo Solinas, Paolo Zanardi, Nino Zangh\`ı +1
In this paper we study the implementation of non-adiabatic geometrical quantum gates with in semiconductor quantum dots. Different quantum information enconding/manipulation scheme…