Articolele autorului Ioan ZAHARIE
Link la profilul stiintific al lui Ioan ZAHARIE

The game of the ‘very small’ and the ‘very big’
Photon-added coherent states for the Morse oscillator

In the paper we have constructed and investigated some properties of the Perelomov's “generalized coherent states” and photon-added coherent states for the Morse one-dimensional Hamiltonian (MO-PACSs), using the SU(2) group generators. We have found the integration measure in the resolution of unity and we have calculated some expectation values in the MO-PACSs representation. Using these states, the diagonal P-representation of the density operator

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Quantum information in the frame of coherent states representation

In this paper we have showed that the qubit can be expressed through the coherent states. Consequently, a message, i.e. a sequence of qubits, is expressed as a tensor product of coherent states. In the quantum information theory and practice, only the code and key message are expressed as a sequence of qubits, i.e. through a quantum channel, the properly information will be transmitted by using a classical channel. Even if the most used coherent

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Spectral Absorption of Unpolarized Light Through Nano-Materials in the Absence of a Magnetic Field

A study of optical properties, such as light absorption, of a colloidal nano-material, provides information on the biphasic, solid - liquid system microstructure. The nano-material under study is a magnetic liquid (ferrofluid). The disperser agent is petroleum mineral oil and the dispersed material is a brown spar powder (nano-particles). The stabilizer is oleic acid. Light absorption through ferrofluid samples reveals the tendency of solid particles

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On a Problem of Geometric Quantization

The problem of geometric Kostant quantization of this paper is the role played by "½-correction forms" in order to arrive at the result given by the classical Schrödinger quantization, in the one-dimensional harmonic oscillator study.

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The energy transfer between the ports of an implemented gyrator using LM13700 operational transconductance amplifier

In this paper a gyrator implementation using a LM13700 operational transconductance amplifier is analyzed. It was first verified under PSpice simulation and experimentally the antireciprocity of this gyrator, i.e., its properties. This type of gyrator can be used for controlling the energy transfer from one port to the other by modifying the bias currents of the operational transconductance amplifier.

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The 1/2 Correction Forms in Geometric Quantization of the Symmetric Free Rigid Body

Some aspects of Kostant's geometric quantization for the symmetric free rigid body are given. The basic idea is to show that the spectrum of a symmetrical free rigid body can always determine via Kostant's geometric quantization in the correction 1/2 forms as well as geometric pre-quantization approach.

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On the structural relaxation of Fe65Gd5 Cr10B20 amorphous alloys

In the present paper the isothermal kinetics relaxation of Fe65Gd5 Cr10B20 amorphous alloys is studied by analyzing the changes of the Curie temperature (Tc). An activation energy ɛa = 2.0 ± 0.1 eV and a mean value of the frequency of jumps υ0 = 6.68 × 1013 Hz are determined.

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