Results 241 to 250 of about 24,022 (280)

ACOUSTIC POLARON IN CYLINDRICAL QUANTUM WIRES

Modern Physics Letters B, 2012
The ground state energies and the derivates of the acoustic polaron in cylindrical quantum wire systems are performed by using the Huybrechts-like variational approach. The criterions for presence of the self-trapping transition of the acoustic polaron in cylindrical quantum wires are determined qualitatively.
Hou, Junhua, Liang, X. X., Zhou, Xin
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Quantum mechanical representation of acoustic streaming and acoustic radiation pressure

Physical Review E, 2001
We discuss acoustic streaming and acoustic radiation pressure from the viewpoint of energy and momentum of acoustic waves, using a quantum mechanical representation of acoustic waves. We represent the energy epsilon and momentum mu of acoustic waves as epsilon=n(p)homega and mu=n(p)hk; here n(p) is the phonon density, omega is the frequency, k is the ...
M, Sato, T, Fujii
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Quantum entanglement for acoustic spintronics

Physical Review A, 2004
We consider the entanglement of spins for two electrons contributing to the acoustoelectric current driven by a surface acoustic wave (SAW) in two adjacent narrow channels by calculating their exchange energy $(J)$. The channels belong to an acoustic nanocircuit which comprises a network of quasi-one-dimensional pinched-off channels serving as wires ...
Godfrey Gumbs, Yonatan Abranyos
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Quantum control of acoustic waves

2023
A key role in quantum communication technologies is the efficient transport of information between quantum resources (such as spins, superconducting circuits, or light). Typically, one would use microwaves, guided by microwave waveguides, as a transportation mechanism.
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Quantum dust-acoustic double layers

Physics of Plasmas, 2007
The quantum dust-acoustic double layers (QDADLs) are studied in an unmagnetized, collisionless quantum dusty plasma whose constituents are the electrons, ions, and negatively/positively charged dust particles. By employing the quantum hydrodynamical equations and the reductive perturbation technique, a quantum extended Korteweg–de Vries equation is ...
Moslem, W., Shukla, P., Ali, S., Schlickeiser, R.   +3 more
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Pseudospin quantum acoustics in liquids

Ultrasonics, 1980
Abstract We call attention to the fact that data on spin-lattice relaxation in liqudis can give information about the rate of resonant acoustic transitions in substances where ordinary electron paramagnetic resonance (epr) and nuclear magnetic resonance (nmr) have been studied.
A.V. Alekseev, U.Kh. Kopvillem
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Quantum Acoustical Imaging

2004
So far all forms of acoustical imaging are diffraction limited and so their resolution limit obeys Rayleigh’s criterion, that is λ/2, where λ is the sound wavelength. In this paper, we apply quantum theory to acoustical imaging and obtain the resolution limit given by the effective de Broglie wavelength λ/N where N is the number of entangled phonons ...
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Physical acoustics in quantum fluids

The Journal of the Acoustical Society of America, 1975
Superfluid helium is rich in the number of wave propagation modes which occur because it behaves as though it is composed of two fluids one of which is superfluid and the other a normal fluid. Four recognized modes are named first, second, third and fourth sound, of which all but the first occur only in quantum fluids.
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Quantum Pseudospin Acoustics in Liquids

1979
The realization of Zavoiski’s ideas concerning acoustic EPR and NMR in fluids are discussed. A general relation between heat fluctuations and sound perturbations is found. Formulas for dipole-dipole and hyperfine AEPR and ANMR are derived. Experimental results for sound modulation of proton spin echoes in aqueous solutions of CuSO4·5H2O are presented.
A. V. Alekseev, U. Kh. Kopvillem
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Acoustic Analogies for Quantum Mechanics

2004
In Chap. 2, we considered the analogy between the propagation of electromagnetic waves and quantum waves, based on the formal similarity between the Helmholtz and the Schrodinger equation. However, a similar analogy holds for sound waves. This is to be expected since sound waves are not so different from electromagnetic waves.
Daniela Dragoman, Mircea Dragoman
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