output
19922026
most citedLaser cooling of a nanomechanical oscillator into its quantum ground state

2.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2013 · quant-phShow all

11 papers · 2 filters

quant-ph2013★ 4 cited

Minkowski structure for purity and entanglement of Gaussian bipartite states

Marcos C. de Oliveira, Fernando Nicacio, Salomon S. Mizrahi

The relation between the symplectic and Lorentz groups is explored to investigate entanglement features in a two-mode bipartite Gaussian state. We verify that the correlation matri…

quant-ph2013★ 1 cited

Antiparticle creation in tunneling

Stefano De Leo, Pietro Rotelli

We study particle interaction with a Dirac step potential. In the standard Klein energy zone, the hypothesis of Klein pair production predicts the existence of free/oscillatory ant…

quant-ph2013★ 14 cited

Tight Bounds for the Entanglement of Formation of Gaussian States

Fernando Nicacio, Marcos Cesar de Oliveira

We establish tight upper and lower bounds for the Entanglement of Formation of an arbitrary two-mode Gaussian state employing necessary properties of Gaussian channels. Both bounds…

quant-ph2013★ 6 cited

Efficient finite-time measurements under thermal regimes

Carlos Alexandre Brasil, Leonardo Andreta de Castro, Reginaldo de Jesus Napolitano

Contrary to conventional quantum mechanics, which treats measurement as instantaneous, here we explore a model for finite-time measurement. The main two-level system interacts with…

quant-ph2013★ 14 cited

Phase space flow in the Husimi representation

M. Veronez, M. A. M. de Aguiar

We derive a continuity equation for the Husimi function evolving under a general non-hermitian Hamiltonian and identify the phase space flow associated with it. For the case of uni…

quant-ph2013★ 31 cited

Quantum State Tomography with incomplete data: Maximum Entropy and Variational Quantum Tomography

D. S. Gonçalves, C. Lavor, M. A. Gomes-Ruggiero +3

Whenever we do not have an informationally complete set of measurements, the estimate of a quantum state can not be uniquely determined. In this case, among the density matrices co…

quant-ph2013★ 1 cited

On a Time-Space Operator (and other Non-Selfadjoint Operators) for Observables in QM and QFT

Erasmo Recami, Michel Zamboni-Rached, Ignazio Licata

Aim of this paper is trying to show the possible significance, and usefulness, of various non-selfadjoint operators for suitable Observables in non-relativistic and relativistic qu…

quant-ph2013★ 57 cited

Solovay-Kitaev Decomposition Strategy for Single-Qubit Channels

Dong-Sheng Wang, Dominic W. Berry, Marcos C. de Oliveira +1

Inspired by the Solovay-Kitaev decomposition for approximating unitary operations as a sequence of operations selected from a universal quantum computing gate set, we introduce a m…

quant-ph2013★ 7 cited

Bipartite bound entanglement in continuous variables through deGaussification

F. E. S. Steinhoff, M. C. de Oliveira, J. Sperling +1

We introduce a class of bipartite entangled continuous variable states that are positive under partial transposition operation, i.e., PPT bound entangled. These states are based on…

quant-ph2013★ 8 cited

A study of transit times in Dirac tunneling

Stefano De Leo

Based on the Dirac equation, the behavior of relativistic electrons which tunnel a potential barrier of height V0 for incoming energies between V0 and V0+m is studied by using the…

quant-ph2013★ 2 cited

Dynamics of a superconducting qubit coupled to the quantized cavity field: a unitary transformation approach

Dagoberto S. Freitas, A. Vidiella-Barranco, J. A. Roversi

We present a novel approach for studying the dynamics of a superconducting qubit in a cavity. We succeed in linearizing the Hamiltonian through the application of an appropriate un…