The Institute of Physics ( IOP ) по журналам "Journal of Optics B: Quantum and Semiclassical Optics"
Отображаемые элементы 1-20 из 158
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(1999-06-01)The fundamentals of Fan's method of integration within ordered products are investigated and it is shown that it is a reliable calculation method in quantum optics. Differentiation within ordered products is included into ...
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(1999-08-01)We present numerical and analytical results for the Mollow probe absorption spectrum of a coherently driven two-level system in a narrow bandwidth squeezed vacuum field. The spectra are calculated for the case where the ...
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(2000-10-01)We study the effects of both AC and DC fields in the quasienergy band structure of cold atoms in optical lattices. The effects studied include Rabi oscillations between Bloch bands and dynamical band collapse in AC fields, ...
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(1999-08-01)A collection of routines is described which largely automates the process of generating the quantum mechanical equations of motion for problems involving systems with relatively few degrees of freedom. Their use allows the ...
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(1999-08-01)All attempts, to date, to Bose condense caesium have been thwarted by the unexpectedly high two-body, inelastic spin-flip cross section. In this paper we discuss, quantitatively, a hybrid laser/magnetic trap that overcomes ...
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(1999-02-01)Using the underlying SU(2) algebra of the Jaynes-Cummings model, we construct a time-dependent interaction term that allows analytical solution for even off-resonance conditions. Exact solutions for the time evolution of ...
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(2000-08-01)We present a quantum analysis of the action of an eight-port detector with a local oscillator of finite intensity. Resorting to the formalism of generalized measurements, we derive a family of states that determines the ...
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(1999-08-01)We present a non-Markovian quantum trajectory method for treating atoms radiating into a reservoir with a non-flat density of states. The results of an example numerical simulation of the case where the free space modes ...
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(2000-04-01)By using the Wigner transform, it is shown that the propagation of an electromagnetic (EM) wavepacket in a nonlinear medium, governed by nonlinear Schrödinger equation, can be described, in phase space, by a kinetic-like ...
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(1999-08-01)We present an experimental and numerical study of the effects of decoherence on a quantum system whose classical analogue has Kolmogorov-Arnol'd-Moser (KAM) tori in its phase space. Atoms are prepared in a caesium ...
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(1999-08-01)A method for creating miniature quadrupole traps for atoms is proposed. The method uses pairs of micro-fabricated dipole magnets to create a quadrupole field for trapping atoms in two dimensions while allowing free propagation ...
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(2000-12-01)The method of thermodynamic Green functions is applied to the determination of the susceptibilities and absorption spectra of atoms in microcavities. The method is introduced by its application to an atom in free space, ...
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(2000-10-01)Cold rubidium atoms are subjected to an amplitude-modulated far-detuned standing wave of light to form a quantum-driven pendulum. Here we discuss the dynamics of these atoms. Phase space resonances and chaotic transients ...
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(1999-02-01)We present experimental results on the selection of transverse patterns and their dynamics in a CO2 laser with an intracavity grating. Depending on the parameter values, we observe different single-frequency patterns with ...
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(2000-10-01)We study the dynamics of ultracold atoms in an optical lattice under constant bias. After recapitulating the ideas underlying Bloch oscillations and Zener's formula for interband transitions, the Bloch-Zener scenario is ...
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(2000-10-01)We analyse the dynamics of a weakly index-guided semiconductor laser operating near threshold and with optical feedback, using the Lang-Kobayashi model. Lateral effects are included, taking into account lateral carrier ...
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(1999-08-01)We discuss the characterization of continuous variable, optical quantum teleportation in terms of the two-quadrature signal transfer and conditional variances between the input and output states. We derive criteria which ...
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(2000-12-01)The phase space of a loss-modulated CO2 laser is experimentally investigated with the use of the technique of short-lived pulse loss perturbations. A coexistence of two and three attractors is shown in a wide range of the ...
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(1999-10-01)The characteristics of the quantum optical complementarity principle and the coherence of the photons generated in a Mach-Zehnder interferometer with two degenerate optical parametric amplifiers are analysed. The photon ...
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(1999-10-01)Coherent states provide an appealing method to reconstruct efficiently the pure state of a quantum mechanical spin s. A Stern-Gerlach apparatus is used to measure (4s+1) expectations of projection operators on appropriate ...
Отображаемые элементы 1-20 из 158