Craig M. Savage
Professor of Physics
ANU

Publications 1994-2003
mainly cold atoms

ResearcherID | Publications after 2003 | Publications before 1994


Dirac monopoles and dipoles in ferromagnetic spinor Bose-Einstein condensates,
C. M. Savage and J. Ruostekoski, Phys. Rev. A 68, 043604 (2003).
ArXiv | Physical Review A | Google Scholar

We investigate a radial spin hedgehog, analogous to the Dirac monopole, in an optically trapped atomic spin-1 Bose-Einstein condensate. Full abstract.


Energetically stable particle-like Skyrmions in a trapped Bose-Einstein condensate,
C. M. Savage and J. Ruostekoski, Phys. Rev. Lett. 91, 010403 (2003).
ArXiv | Physical Review Letters | Google Scholar

We numerically show that a topologically nontrivial 3D Skyrmion can be energetically stable in a trapped two-component atomic Bose-Einstein condensate, for the parameters of Rb-87 condensate experiments. Full abstract.


Bose-Einstein condensate collapse: a comparison between theory and experiment,
C. M. Savage, N.P. Robins, and J.J. Hope, Phys. Rev. A 67, 014304 (2003).
ArXiv | Physical Review A | Google Scholar

We solve the Gross-Pitaevskii equation numerically for the collapse induced by a switch from positive to negative scattering lengths. Full abstract.


Bose-Einstein condensates in optical lattices: Band-gap structure and solitons,
P. J. Y. Louis, E. A. Ostrovskaya, C. M. Savage, and Yu. S. Kivshar, Phys. Rev. A 67, 013602 (2003).
ArXiv | Physical Review A | Google Scholar

We analyze the existence and stability of spatially extended (Bloch-type) and localized states of a Bose-Einstein condensate loaded into an optical lattice. Full abstract.


Stability of continuously pumped atom lasers,
S. A. Haine, J. J. Hope, N. P. Robins, C. M. Savage, Phys. Rev. Lett. 88, 170403 (2002).
ArXiv | Physical Review Letters | Google Scholar

A multimode model of a continuously pumped atom laser is shown to be unstable below a critical value of the scattering length. Full abstract.


Macroscopic quantum superposition states in Bose-Einstein condensates: Decoherence and many modes,
P. J. Y. Louis, P. M. R. Brydon, and C. M. Savage, Phys. Rev. A 64, 053613 (2001).
Physical Review A | Google Scholar

We investigate the feasibility of a particular scheme for generating macroscopic quantum superposition states in two-species dilute gas Bose-Einstein condensates. Full abstract.


Atom laser dynamics,
Nicholas Robins, Craig Savage, and Elena A. Ostrovskaya, Phys. Rev. A 64, 043605 (2001).
ArXiv | Physical Review A | Google Scholar

An ideal atom laser would produce an atomic beam with highly stable flux and energy. Full abstract.


The theory of atom lasers
R. Ballagh and C. M. Savage, in "Proceedings of the Thirteenth Physics Summer School", reference below.
ArXiv | Local PDF (500 kB) | Google Scholar

We review the current theory of atom lasers. Full abstract.


Proceedings of the Thirteenth Physics Summer School: Bose-Einstein Condensation: Atomic Physics to Quantum Fluids, eds. C.M. Savage and M.P. Das (World Scientific, Singapore, 2000).
Amazon listing


The linewidth of a non-Markovian atom laser
J. J. Hope, G. M. Moy, M. J. Collett, C. M. Savage, Optics Commun. 179, 571 (2000).
Local PDF (80 kB) | Optics Communications | Google Scholar

We present a fully quantum mechanical treatment of a single-mode atom laser including pumping and output coupling. Full abstract.


A model of a pumped continuous atom laser,
N. Robins, C. Savage, E. Ostrovskaya, in "Directions in Quantum Optics : A Collection of Papers Dedicated to the Memory of Dan Walls", eds. H. Carmichael, R. Glauber, M. Scully (Springer, 2000).
ArXiv | Local PDF (460 kB) | Google Scholar

We present a model of a cw atom laser based on a system of coupled GP equations. The model incorporates continuous Raman outcoupling, pumping and three-body recombination. The outcoupled field has minimal atomic density fluctuations and is locally monochromatic.


Steady-state quantum statistics of a non-Markovian atom laser,
J. J. Hope, G. M. Moy, M. J. Collett, and C. M. Savage, Phys. Rev. A 61, 023603 (2000).
Physical Review A | Google Scholar

We present a fully quantum-mechanical treatment of a single-mode atomic cavity with a pumping mechanism and an output coupling to a continuum of external modes. Full abstract.


Visualising special relativity,
C. M. Savage and A. C. Searle, The Physicist 36, 141 (1999).
PDF version (522 kB) | Google Scholar

We describe a graphics package we have developed for producing photo-realistic images of relativisticaly moving objects. The physics of relativistic images is outlined.


Creating macroscopic quantum superpositions with Bose-Einstein condensates,
D. Gordon and C. M. Savage , Phys. Rev. A 59, 4623 (1999).
Physical Review A | Google Scholar

We use a simple two-mode model to investigate the quantum state dynamics of a two-species Bose-Einsten condensate, such as that produced in recent experiments, undergoing weak Josephson coupling. Full abstract.


Probing a doubly driven two-level atom,
Andrew D Greentree, Changjiang Wei, Scott A Holmstrom, John P D Martin, Neil B Manson, Kylie R Catchpole and Craig Savage, Journal of Optics B: Quantum Semiclass. Opt. 1, 240 (1999).
Journal of Optics B | Google Scholar

A two-level system is driven by two strong fields, one on resonance and one close to resonance. Full abstract.


Born and Markov approximations for atom lasers,
G.M. Moy, J.J. Hope, C.M. Savage, Phys. Rev. A 59, 667 (1999).
ArXiv | Physical Review A | Google Scholar

We discuss the use of the Born and Markov approximations in describing the dynamics of an atom laser. Full abstract.


Excitation spectrum and instability of a two-species Bose-Einstein condensate,
D. Gordon, C.M. Savage, Phys. Rev. A 58, 1440 (1998).
ArXiv | Physical Review A | Google Scholar

We numerically calculate the zero-temperature density profile and excitation spectrum of a two-species Bose-Einstein condensate for the parameters of recent experiments. Full abstract.


Pumping two dilute gas Bose-Einstein condensates with Raman light scattering,
C. M. Savage, Janne Ruostekoski, Dan F. Walls, Phys. Rev. A 57, 3805 (1998).
ArXiv | Physical Review A | Google Scholar

We propose an optical method for increasing the number of atoms in a pair of dilute-gas Bose-Einstein condensates. Full abstract.


Output coupling for an atom laser by state change,
G. Moy and C. M. Savage, Phys. Rev. A 56, 1087 (1997).
ArXiv | Physical Review A | Google Scholar

We calculate the spectrum of a beam of atoms output from a single-mode atomic cavity. Full abstract.


Spontaneous photon emission stimulated by two Bose-Einstein condensates,
C. M. Savage, Janne Ruostekoski, Dan F. Walls, Phys. Rev. A 56, 2046 (1997).
ArXiv | Physical Review A | Google Scholar

We show that the phase difference of two overlapping ground-state Bose-Einstein condensates can affect the optical spontaneous emission rate of excited atoms. Full abstract.


Atom laser based on Raman transitions,
G. Moy, J. Hope, and C.M. Savage, Phys. Rev. A 55, 3631 (1997).
ArXiv | Physical Review A | Google Scholar

In this paper we present an atom laser scheme using a Raman transition for the output coupling of atoms. Full abstract.


Stimulation of beta decay due to a Bose-Einstein condensate,
J. Hope and C.M. Savage, Phys. Lett. A 222, 87 (1996).
ArXiv | Physics Letters A | Google Scholar

Nuclear processes can be stimulated by the presence of a macroscopic number of bosons in one of the final states. Full abstract.


Stimulated enhancement of cross-section by a Bose-Einstein condensate,
J. Hope and C.M. Savage, Phys. Rev. A 54, 3177 (1996).
ArXiv | Physical Review A | Google Scholar

This paper examines the feasibility of constructing an experiment that detects the atomic stimulation of a photon-emission process. Full abstract.


Mechanical potentials due to Raman transitions,
J. J. Hope and C. M. Savage, Phys. Rev. A 53, 1697 (1996).
Physical Review A | Google Scholar

We investigate the mechanical potential of an atom due to a Raman transition. This is a generalization of the usual two-level dipole potential. Full abstract.


Evanescent wave diffraction of multi-level atoms,
D. Gordon and C. Savage, Opt. Commun. 130, 34 (1996);
Erratum, Opt. Commun. 136, 503 (1997).
ArXiv | Optics Communications | Erratum | Google Scholar

Diffraction of multi-level atoms by an evanescent wave reflective diffraction grating is modeled by numerically solving the time-dependent Schrödinger equation. Full abstract.


Band gaps for atoms in light based waveguides,
J. Hope and C. Savage, Phys. Rev. A 53, 3449 (1996).
Erratum, Phys. Rev. A 54, 5458 (1996).
ArXiv | Physical Review A | Google Scholar

The energy spectrum for a system of atoms in a periodic potential can exhibit a gap in the band structure. Full abstract.


Introduction to light forces, atom cooling, and atom trapping,
C. Savage, Aust. J. Phys. 49, 745 (1996).
ArXiv | Google Scholar

This paper introduces and reviews light forces, atom cooling and atom trapping. Full abstract.


Numerical modeling of evanescent wave atom optics,
C. Savage, D. Gordon, and T. Ralph, Phys. Rev. A 52, 4741 (1995).
Physical Review A | Google Scholar

We numerically solve the time-dependent Schrödinger equation for a two-level atom interacting with an evanescent light field. Full abstract.


Atomic gravitational cavities from hollow optical fibers,
D. Harris and C.M. Savage, Phys. Rev. A 51, 3967 (1995).
Physical Review A | Google Scholar

We analyze a type of cavity, or trap, for atoms: a hollow optical fiber bent into a vertical U shape. Full abstract.


Quantum trajectories and classical attractors in second harmonic generation,
Xiping Zheng and C.M. Savage, Phys. Rev. A 51, 792 (1995).
Physical Review A | Google Scholar

We numerically investigate the classical limit of quantum trajectories in optical second-harmonic generation. Full abstract.


Bound states of two-dimensional nonuniform waveguides,
M. Andrews and C.M. Savage, Phys. Rev. A 50, 4535 (1994).
Physical Review A | Google Scholar

We consider the theoretical problem of finding the bound eigenstates of an infinite nonuniform two-dimensional waveguide with Dirichlet boundary conditions. Full abstract.


Coherent atomic waveguides from hollow optical fibers: quantized atomic motion,
S. Marksteiner, C.M. Savage, P. Zoller, S. Rolston, Phys. Rev. A 50, 2680 (1994).
Physical Review A | Google Scholar

We present a theoretical analysis of coherent atomic motion through a straight atomic waveguide constructed from a hollow optical fiber. Full abstract.


Complete atomic population inversion using correlated sidebands,
Ping Koy Lam and C.M. Savage, Phys. Rev. A, 50, 3500 (1994).
Physical Review A | Google Scholar

We consider a two-level atom driven by modulated light and find that complete population inversion can be induced by light without any resonant frequency component. Full abstract.


Phase-sensitive above-threshold laser amplifiers,
Yi Mu and C.M. Savage, Phys. Rev. A 49, 4093 (1994).
Physical Review A | Google Scholar

We present a quantum-mechanical analysis of an above-threshold laser amplifier made phase sensitive by an injected field. Full abstract.


Tolerance of dual recycling laser interferometric gravitational wave detectors to mirror tilt and curvature errors,
D. McClelland, C.M. Savage, A. Tridgell, R. Mavaddat, Phys. Rev. D 48, 5475 (1994).
Physical Review D | Google Scholar

Various configurations of dual recycling laser interferometers are tested, numerically, for their tolerance to wave-front distortions induced by mirror tilts and curvature mismatch. Full abstract.


Publications before 1994 | Publications after 2003

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