output
19942026
most citedPhonons and related properties of extended systems from density-functional perturbation theory

10.1k citations

Showing 1998 · quant-phShow all

12 papers · 2 filters

quant-ph1998★ 6 cited

Endoscopic Tomography and Quantum-Non-Demolition

Mauro Fortunato, Paolo Tombesi, Wolfgang P. Schleich

We propose to measure the quantum state of a single mode of the radiation field in a cavity---the signal field---by coupling it via a quantum-non-demolition Hamiltonian to a meter…

quant-ph1998★ 25 cited

Stochastic Phase Space Localization for a Single Particle

Stefano Mancini, David Vitali, Paolo Tombesi

We propose a feedback scheme to control the vibrational motion of a single trapped particle based on indirect measurements of its position. It results the possibility of a motional…

quant-ph1998★ 320 cited

Symmetrizing Evolutions

Paolo Zanardi

We introduce quantum procedures for making -invariant the dynamics of an arbitrary quantum system S, where is a finite group acting on the space state of S. Severa…

quant-ph1998★ 305 cited

Using Parity Kicks for Decoherence Control

David Vitali, Paolo Tombesi

We show how it is possible to suppress decoherence using tailored external forcing acting as pulses. In the limit of infinitely frequent pulses decoherence and dissipation are comp…

quant-ph1998★ 47 cited

Subdecoherent Information Encoding in a Quantum-Dot Array

Paolo Zanardi, Fausto Rossi

A potential implementation of quantum-information schemes in semiconductor nanostructures is studied. To this end, the formal theory of quantum encoding for avoiding errors is reca…

quant-ph1998★ 4 cited

Electron-radiation interaction in a Penning trap: beyond the dipole approximation

Ana M. Martins, Stefano Mancini, Paolo Tombesi

We investigate the physics of a single trapped electron interacting with a radiation field without the dipole approximation. This gives new physical insights in the so-called geoni…

quant-ph1998★ 7 cited

Chaos, Thermodynamics and Quantum Mechanics: an Application to Celestial Dynamics

David Vitali, Paolo Grigolini

We address the issue of the quantum-classical correspondence in chaotic systems using, as recently done by Zurek [e-print quant-ph/9802054], the solar system as a whole as a case s…

quant-ph1998★ 28 cited

Measuring quantum optical Hamiltonians

G. M. D'Ariano, L. Maccone

We show how recent state-reconstruction techniques can be used to determine the Hamiltonian of an optical device that evolves the quantum state of radiation. A simple experimental…

quant-ph1998★ 184 cited

Quantum Information in Semiconductors: Noiseless Encoding in a Quantum-Dot Array

Paolo Zanardi, Fausto Rossi

A potential implementation of quantum-computation schemes in semiconductor-based structures is proposed. In particular, an array of quantum dots is shown to be an ideal quantum reg…

quant-ph1998★ 71 cited

Quantum State Protection in Cavities

David Vitali, Paolo Tombesi, Gerard J. Milburn

We show how an initially prepared quantum state of a radiation mode in a cavity can be preserved for a long time using a feedback scheme based on the injection of appropriately pre…

quant-ph1998★ 335 cited

Optomechanical Cooling of a Macroscopic Oscillator by Homodyne Feedback

Stefano Mancini, David Vitali, Paolo Tombesi

We propose a simple optomechanical model in which a mechanical oscillator quadrature could be "cooled" well below its equilibrium temperature by applying a suitable feedback to dri…

quant-ph1998★ 8 cited

Reply to a Comment on "the Role of Dimensionality in the Stability of a Confined Condensed Bose Gas"

Luca Salasnich

As pointed out by the authors of the comment quant-ph/9712046, in our paper quant-ph/9712030 we studied in detail the metastability of a Bose-Einstein Condensate (BEC) confined in…