Stable fiber-based Fabry-Pérot cavity

Steinmetz, Tilo; Balocchi, Andréa; Colombe, Yves; Hunger, David; Hänsch, Theodor W.; Warburton, R. J.; Reichel, Jakob

doi:10.1063/1.2347892

Cited by 98 publications

(100 citation statements)

References 12 publications

(21 reference statements)

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“…Such surfaces are produced by silicon wet-etching, 18 enclosing nitrogen bubbles in borosilicate and polishing away the bubbles' upper half, 19 or by transferring a coating produced on a microlens onto an optical fiber. 20,21 All these approaches have been used to produce cavities with moderate finesses of up to 6 × 10 3 . Recent developments in the fabrication of glass microcavities by shaping surfaces with controlled re-flow of borosilicate glass 22 yielded finesses of up to 3.2 × 10 4 .…”

Section: Fiber-based Fabry-perot Cavitiesmentioning

confidence: 99%

Integrated fiber-mirror ion trap for strong ion-cavity coupling

Brandstätter

McClung

Schüppert

et al. 2013

Review of Scientific Instruments

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We present and characterize fiber mirrors and a miniaturized ion-trap design developed to integrate a fiber-based Fabry-Perot cavity (FFPC) with a linear Paul trap for use in cavity-QED experiments with trapped ions. Our fiber-mirror fabrication process not only enables the construction of FFPCs with small mode volumes, but also allows us to minimize the influence of the dielectric fiber mirrors on the trapped-ion pseudopotential. We discuss the effect of clipping losses for long FFPCs and the effect of angular and lateral displacements on the coupling efficiencies between cavity and fiber. Optical profilometry allows us to determine the radii of curvature and ellipticities of the fiber mirrors. From finesse measurements, we infer a single-atom cooperativity of up to 12 for FFPCs longer than 200 μm in length; comparison to cavities constructed with reference substrate mirrors produced in the same coating run indicates that our FFPCs have similar scattering losses. We characterize the birefringence of our fiber mirrors, finding that careful fiber-mirror selection enables us to construct FFPCs with degenerate polarization modes. As FFPCs are novel devices, we describe procedures developed for handling, aligning, and cleaning them. We discuss experiments to anneal fiber mirrors and explore the influence of the atmosphere under which annealing occurs on coating losses, finding that annealing under vacuum increases the losses for our reference substrate mirrors. X-ray photoelectron spectroscopy measurements indicate that these losses may be attributable to oxygen depletion in the mirror coating. Special design considerations enable us to introduce a FFPC into a trapped ion setup. Our unique linear Paul trap design provides clearance for such a cavity and is miniaturized to shield trapped ions from the dielectric fiber mirrors. We numerically calculate the trap potential in the absence of fibers. In the experiment additional electrodes can be used to compensate distortions of the potential due to the fibers. Home-built fiber feedthroughs connect the FFPC to external optics, and an integrated nanopositioning system affords the possibility of retracting or realigning the cavity without breaking vacuum.

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Section: Fiber-based Fabry-perot Cavitiesmentioning

confidence: 99%

Integrated fiber-mirror ion trap for strong ion-cavity coupling

Brandstätter

McClung

Schüppert

et al. 2013

Review of Scientific Instruments

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“…That the trapping of atoms inside such a resonator is experimentally feasible has al- ready been shown by several groups. First experiments have been performed combining atom or ion trapping technology [16,17,18,19,20,21,22,23,24] with optical cavities. Meschede's group in Bonn have succeeded in constructing an atomic conveyor belt, which allows one to localise atoms with very high precision [21] and can be combined with an optical cavity.…”

Section: Introductionmentioning

confidence: 99%

Macroscopic quantum jumps and entangled-state preparation

Metz

Beige

2007

Phys. Rev. A

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Recently we predicted a random blinking, i.e. macroscopic quantum jumps, in the fluorescence of a laser-driven atom-cavity system [Metz et al., Phys. Rev. Lett. 97, 040503 (2006)]. Here we analyse the dynamics underlying this effect in detail and show its robustness against parameter fluctuations. Whenever the fluorescence of the system stops, a macroscopic dark period occurs and the atoms are shelved in a maximally entangled ground state. The described setup can therefore be used for the controlled generation of entanglement. Finite photon detector efficiencies do not affect the success rate of the state preparation, which is triggered upon the observation of a macroscopic fluorescence signal. High fidelities can be achieved even in the vicinity of the bad cavity limit due to the inherent role of dissipation in the jump process.

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“…Advances in tunable microfabricated cavities for atom detection [54,55] and cavities formed from optical fibers [56] may provide a solution.…”

Section: Single Photon Sourcementioning

confidence: 99%

EIT-based quantum memory for single photons from cavity-QED

et al. 2011

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We investigate the feasibility of implementing an elementary building block for quantum information processing. The combination of a deterministic single photon source based on vacuum stimulated adiabatic rapid passage, and a quantum memory based on electromagnetically induced transparency in atomic vapour is outlined. Both systems are able to produce and process temporally shaped wavepackets which provides a way to maintain the indistinguishability of retrieved and original photons. We also propose an efficient and robust 'repeat-until-success' quantum computation scheme based on this hybrid architecture.

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Stable fiber-based Fabry-Pérot cavity

Cited by 98 publications

References 12 publications

Integrated fiber-mirror ion trap for strong ion-cavity coupling

Integrated fiber-mirror ion trap for strong ion-cavity coupling

Macroscopic quantum jumps and entangled-state preparation

EIT-based quantum memory for single photons from cavity-QED

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