Light scattering by ultracold atoms in an optical lattice

Rist, Stefan; Menotti, C.; Morigi, Giovanna

doi:10.1103/physreva.81.013404

Cited by 28 publications

(43 citation statements)

References 72 publications

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“…A spectral analysis of the probe intensity will provide information on the state of the system, which can be studied as a function of the laser pump intensity, and hence of the tunneling rate [36,37]. Sweeping the phase diagram in the directionμ may be performed in various ways.…”

Section: Discussionmentioning

confidence: 99%

Quantum ground state of self-organized atomic crystals in optical resonators

et al. 2010

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Cold atoms, driven by a laser and simultaneously coupled to the quantum field of an optical resonator, may self-organize in periodic structures. These structures are supported by the optical lattice, which emerges from the laser light they scatter into the cavity mode, and form when the laser intensity exceeds a threshold value. We study theoretically the quantum ground state of these structures above the pump threshold of self-organization, by mapping the atomic dynamics of the self-organized crystal to a Bose-Hubbard model. We find that the quantum ground state of the self-organized structure can be the one of a Mott-insulator or a superfluid, depending on the pump strength of the driving laser. For very large pump strengths, where the intracavity intensity is maximum and one would expect a Mott-insulator state, we find intervals of parameters where the system is superfluid. These states could be realized in existing experimental setups.

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Section: Discussionmentioning

confidence: 99%

Quantum ground state of self-organized atomic crystals in optical resonators

et al. 2010

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“…it affects the phase and amplitude of the atomic operators). The modification of the light scattering for the time intervals, where tunneling is important, was considered, e.g., in [32,33]. In Ref.…”

Section: A Model For Probing Bosons In Optical Latticesmentioning

confidence: 99%

“…In Ref. [33], the influence of the photon-induced atomic recoil on the site-to-site hopping was analyzed. A question of the light dynamics was addressed in Ref.…”

Section: A Model For Probing Bosons In Optical Latticesmentioning

confidence: 99%

Quantum optics with ultracold quantum gases: towards the full quantum regime of the light–matter interaction

Mekhov¹,

Ritsch²

2012

J. Phys. B: At. Mol. Opt. Phys.

174

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Although the study of ultracold quantum gases trapped by light is a prominent direction of modern research, the quantum properties of light were widely neglected in this field. Quantum optics with quantum gases closes this gap and addresses phenomena, where the quantum statistical nature of both light and ultracold matter play equally important roles. First, light can serve as a quantum nondemolition (QND) probe of the quantum dynamics of various ultracold particles from ultracold atomic and molecular gases to nanoparticles and nanomechanical systems. Second, due to dynamic light-matter entanglement, projective measurement-based preparation of the many-body states is possible, where the class of emerging atomic states can be designed via optical geometry. Light scattering constitutes such a quantum measurement with controllable measurement back-action. As in cavity-based spin squeezing, atom number squeezed and Schrödinger cat states can be prepared. Third, trapping atoms inside an optical cavity one creates optical potentials and forces, which are not prescribed but quantized and dynamical variables themselves. Ultimately, cavity QED with quantum gases requires a self-consistent solution for light and particles, which enriches the picture of quantum many-body states of atoms trapped in quantum potentials. This will allow quantum simulations of phenomena related to the physics of phonons, polarons, polaritons and other quantum quasiparticles.

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“…This result is particularly relevant in that the excited absorption and spontaneous emission cycles may randomize the atomic motion and hamper the experimental observation of radiation damping. [30][31][32][33][34] However, the actual values of the spin dephasing rate c 12 of cold atoms confined in the optical lattice 26 do not play a crucial role in determining the optical response as long as V c ..c 13 ..c 12 , and our results do not significantly change for the range of values 1.0 kHz,c 12 ,100 kHz.…”

Section: Our Ensemble Of Cold 87mentioning

confidence: 49%

Radiation damping optical enhancement in cold atoms

Horsley

Artoni

et al. 2013

Light Sci Appl

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The typically tiny effect of radiation damping on a moving body can be amplified to a favorable extent by exploiting the sharp reflectivity slope at one edge of an optically induced stop-band in atoms loaded into an optical lattice. In this paper, this phenomenon is demonstrated for the periodically trapped and coherently driven cold 87 Rb atoms, where radiation damping might be much larger than that anticipated in previous proposals and become comparable with radiation pressure. Such an enhancement could be observed even at speeds of only a few meters per second with less than 1.0% absorption, making radiation damping experimentally accessible.

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Light scattering by ultracold atoms in an optical lattice

Cited by 28 publications

References 72 publications

Quantum ground state of self-organized atomic crystals in optical resonators

Quantum ground state of self-organized atomic crystals in optical resonators

Quantum optics with ultracold quantum gases: towards the full quantum regime of the light–matter interaction

Radiation damping optical enhancement in cold atoms

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