352 citations · 1.9k across the 23 of their papers we have counts for
23 papers
Hexapartite entanglement in an above-threshold Optical Parametric Oscillator
F. A. S. Barbosa, A. S. Coelho, L. F. Muñoz Martínez +4
We demonstrate, theoretically and experimentally, the generation of hexapartite modal entanglement by the optical parametric oscillator (OPO) operating above the oscillation thresh…
Exploring six modes of an optical parametric oscillator
Luis F. Muñoz-Martínez, Felippe Alexandre Silva Barbosa, Antônio Sales Coelho +4
We measure the complete quantum state for six modes of the electromagnetic field produced by an optical parametric oscillator. The investigation involves the sideband of the intens…
Continuous variables quantum computation over the vibrational modes of a single trapped ion
Luis Ortiz-Gutiérrez, Bruna Gabrielly, Luis F. Muñoz +3
We consider the quantum processor based on a chain of trapped ions to propose an architecture wherein the motional degrees of freedom of trapped ions (position and momentum) could…
Phase coherent resonator detection as a complete quantum measurement of the two-mode spectral quantum state of light
F. A. S. Barbosa, A. S. Coelho, K. N. Cassemiro +3
The introduction of phase coherence in the detection of quantum noise of light yields a pure quantum measurement of spectral modes. We theoretically show that such coherent quantum…
Analyzing the Gaussian character of the spectral quantum state of light via quantum noise measurements
A. S. Coelho, F. A. S. Barbosa, K. N. Cassemiro +3
Gaussian quantum states hold special importance in the continuous variable (CV) regime. In quantum information science, the understanding and characterization of central resources…
Quantum state reconstruction of spectral field modes: homodyne and resonator detection schemes
Felippe A. S. Barbosa, Antonio S. Coelho, Katiuscia N. Cassemiro +4
We revisit the problem of quantum state reconstruction of light beams from the photocurrent quantum noise. As is well-known, but often overlooked, two longitudinal field modes cont…