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10 papers · 2 filters
Two-photon interaction between trapped ions and cavity fields
F. L. Semião, A. Vidiella-Barranco
In this paper, we generalize the ordinary two-photon Jaynes-Cummings model (TPJCM) by considering the atom (or ion) to be trapped in a simple harmonic well. A typical setup would b…
Quantum channels in random spin chains
Jose A. Hoyos, Gustavo Rigolin
We study the entanglement between pairs of qubits in a random antiferromagnetic spin-1/2 chain at zero temperature. We show that some very distant pairs of qubits are highly entang…
Unconditional Bell-type state generation for spatially separate trapped ions
F. L. Semião, R. J. Missori, K. Furuya
We propose a scheme for generation of maximally entangled states involving internal electronic degrees of freedom of two distant trapped ions, each of them located in a cavity. Thi…
Coherent State Path Integrals in the Weyl Representation
L. C. dos Santos, M. A. M. de Aguiar
We construct a representation of the coherent state path integral using the Weyl symbol of the Hamiltonian operator. This representation is very different from the usual path integ…
Quantum Computation via Paraconsistent Computation
Juan C. Agudelo, Walter Carnielli
We present an original model of paraconsistent Turing machines (PTMs), a generalization of the classical Turing machines model of computation using a paraconsistent logic. Next, we…
A semiclassical trace formula for the canonical partition function of one dimensional systems
Fernando Parisio, M. A. M. de Aguiar
We present a semiclassical trace formula for the canonical partition function of arbitrary one-dimensional systems. The approximation is obtained via the stationary exponent method…