Vacuum-stimulated cooling of single atoms in three dimensions

Nussmann, S.; Murr, Karim; Hijlkema, Markus; Weber, Bernhard; Kuhn, Axel; Rempe, Gerhard

doi:10.1038/nphys120

Cited by 130 publications

(163 citation statements)

References 23 publications

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“…This is achieved by a combination of dipole trapping in two (or three) orthogonal blue or red detuned standing light waves [10] and cavity cooling [11,12] or, most recently, feedback cooling [13,14]. The standing light waves can spatially be adjusted in such a way that the atom is trapped at the desired position, as verified by means of a CCD camera which records fluorescence light emitted by the atom, for example during cooling intervals and state preparation.…”

Section: Single-atom Localizationmentioning

confidence: 99%

Quantum optics and cavity QED Quantum network with individual atoms and photons

Rempe

2013

EPJ Web of Conferences

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Abstract. Quantum physics allows a new approach to information processing. A grand challenge is the realization of a quantum network for long-distance quantum communication and large-scale quantum simulation. This paper highlights a first implementation of an elementary quantum network with two fibre-linked high-finesse optical resonators, each containing a single quasi-permanently trapped atom as a stationary quantum node. Reversible quantum state transfer between the two atoms and entanglement of the two atoms are achieved by the controlled exchange of a time-symmetric single photon. This approach to quantum networking is efficient and offers a clear perspective for scalability. It allows for arbitrary topologies and features controlled connectivity as well as, in principle, infinite-range interactions. Our system constitutes the largest man-made material quantum system to date and is an ideal test bed for fundamental investigations, e.g. quantum non-locality.

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Section: Single-atom Localizationmentioning

confidence: 99%

Quantum optics and cavity QED Quantum network with individual atoms and photons

Rempe

2013

EPJ Web of Conferences

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“…Systematic experimental studies of cavity-mediated laser cooling have subsequently been reported by Rempe and co-workers [3][4][5][6], Vuletić and co-workers [7][8][9][10], and others [11,12]. Recent atom-cavity experiments access an even wider range of experimental parameters by replacing conventional high-finesse cavities [13,14] with optical ring cavities [15,16] and tapered nanofibers [17,18] and by combining optical cavities with atom-chip technology [19,20], atomic conveyer belts [21,22], and ion traps [23].…”

Section: Introductionmentioning

confidence: 99%

Rate-equation approach to cavity-mediated laser cooling

Blake¹,

Kurcz²,

Beige³

2012

Phys. Rev. A

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The cooling rate for cavity-mediated laser cooling scales as the Lamb-Dicke parameter η squared. A proper analysis of the cooling process hence needs to take terms up to η 2 in the system dynamics into account. In this paper, we present such an analysis for a standard scenario of cavity-mediated laser cooling with η 1. Our results confirm that there are many similarities between ordinary and cavity-mediated laser cooling. However, for a weakly confined particle inside a strongly coupled cavity, which is the most interesting case for the cooling of molecules, numerical results indicate that more detailed calculations are needed to model the cooling process accurately.

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“…Another example is connected to the so-called cavity cooling method which is suitable to complement the deep conservative potential of FORT by a damping force induced by the field of a high-finesse optical resonator [16,17]. Various cavity cooling setups have been realized: (i) the FORT field can be along the cavity axis and detuned from the near-resonant cavity field by several free spectral ranges [18,19]; or the FORT lasers can be perpendicular to the cavity axis with photons scattered into the cavity responsible for cooling [20,21]. The simultaneous cooling and trapping gives rise to very long trapping times for single atoms.…”

Section: Introductionmentioning

confidence: 99%

Dipole-dipole instability of atom clouds in a far-detuned optical dipole trap

Nagy

Domokos

2007

Phys. Rev. A

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The effect of the dipole-dipole interaction on the far-off-resonance optical dipole trapping scheme is calculated by a mean-field approach. The trapping laser field polarizes the atoms and the accompanying dipole-dipole energy shift deepens the attractive potential minimum in a pancake-shaped cloud. At high density the thermal motion cannot stabilize the gas against self-contraction and an instability occurs. We calculate the boundary of the stable and unstable equilibrium regions on a two-dimensional phase diagram of the atom number and the ratio of the trap depth to the temperature. We discuss the limitations imposed by the dipole-dipole instability on the parameters needed to reach Bose-Einstein condensation in an optical dipole trap.

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Vacuum-stimulated cooling of single atoms in three dimensions

Cited by 130 publications

References 23 publications

Quantum optics and cavity QED Quantum network with individual atoms and photons

Quantum optics and cavity QED Quantum network with individual atoms and photons

Rate-equation approach to cavity-mediated laser cooling

Dipole-dipole instability of atom clouds in a far-detuned optical dipole trap

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