12 citations · 23 across the 5 of their papers we have counts for
6 papers
Beyond Gaussian Entanglement: Practical Criteria for Polynomially Excited Quantum States
Gábor Homa, Richárd Balka, Nikolett Német +3
Polynomial excitations consisting of creation and annihilation operators are studied. Subsystem entanglement is proven produced and preserved by such manipulations. NPT entanglemen…
An exact Markovian decoherence dynamics of two interacting harmonic oscillators coupled to a bosonic heat bath
Gábor Homa, Dávid Hamar, József Zsolt Bernád +2
We present an exact analytical solution of the Hu-Paz-Zhang master equation in a precise Markovian limit for a system of two harmonically coupled harmonic oscillators interacting w…
Effective eigenvalue approximation from moments for self-adjoint trace-class operators
Richárd Balka, Gábor Homa, András Csordás
Spectral properties of bounded linear operators play a crucial role in several areas of mathematics and physics. For each self-adjoint, trace-class operator we define a set $Λ_…
Positivity and entanglement of polynomial Gaussian integral operators
Richárd Balka, András Csordás, Gábor Homa
Positivity preservation is an important issue in the dynamics of open quantum systems: positivity violations always mark the border of validity of the model. We investigate the pos…
Analytical evaluation of the coefficients of the Hu-Paz-Zhang master equation: Ohmic spectral density, zero temperature, and consistency check
G. Homa, J. Z. Bernád, A. Csordás
We investigate the exact master equation of Hu, Paz, and Zhang for a quantum harmonic oscillator at zero temperature with a Lorentz-Drude type Ohmic spectral density. This master e…
Emergence of bound states in ballistic magnetotransport of graphene antidots
P. Rakyta, E. Tóvári, M. Csontos +3
An experimental method for detection of bound states around an antidot formed from a hole in a graphene sheet is proposed by measuring the ballistic two terminal conductances. In p…