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Focus: Optical Fibers Illuminate Single Ion

Devin Powell

Published Jan 25, 2013• 0 citations
OpenAlex

Abstract

A tiny cavity made from two optical fibers—previously used only with neutral atoms—strengthens the interaction between an ion and a photon, an important step toward quantum computers and networks.

Related papers

Optical Fibers Illuminate Single Ion

Devin Powell

A tiny cavity made from two optical fibers—previously used only with neutral atoms—strengthens the interaction between an ion and a photon, an important step toward quantum computers and networks.

Physics•Jan 25, 2013•0 citations

Efficient Collection of Single Photons Emitted from a Trapped Ion into a Single Mode Fiber for Scalable Quantum Information Processing

Andre J. Van Rynbach, Rachel Noek, Taehyun Kim +2 more

Bulletin of the American Physical Society•Jun 6, 2012•0 citations

High precision micro-optical elements on fiber facets via focused-ion beam machining

Raman Kumar, Sebastian Will

Fiber-integrated micro-optical elements promise a scalable approach to photon collection and beam shaping for quantum information processing. Here, we demonstrate single-step micro-machining of micro-spherical, micro-spiral, and micro-axicon structures directly onto the core of single-mode optical fibers using focused-ion beam (FIB) machining with nanometer-scale precision. Atomic force microscopy reveals that micro-concave and micro-convex spherical surfaces achieve shape accuracies of $λ/50$ and $λ/33$ (at $λ= 633$~nm), respectively. Via optical characterization using a He-Ne laser (633~nm), we verify for the micro-spiral and -axicon structures the expected far-field donut beam patterns. Via Mach-Zehnder interferometry, we verify the azimuthal and radial phase structure of the light emitted from the spiral and axicon fibers, respectively. Surface metrology further shows that FIB processing introduces only a small increase in nanoscale roughness while preserving sub-nanometer RMS surface quality. The monolithically integrated fiber micro-optic elements demonstrated here enable broad use in quantum technology, for example, fiber micro-cavities for cavity quantum electrodynamics, beam shaping for neutral atom trapping, and the generation of structured light for free-space quantum network links.

physics.opticsCross-listedarXiv:2604.18426•Apr 21, 2026

Storage, Interference and Mechanical Effects of Single Photons in Coupled Optical Cavities

Imran M. Mirza

We study different phenomena associated with single-photon propagation in optical cavities coupled through optical fibers. We first address the issue of storing and delaying single-photon wavepackets in an array of microcavities. This has possible applications in developing reliable and efficient quantum repeaters that will be utilized \n \nin building long distance quantum networks. Second, we investigate a Hong-Ou-Mandel (HOM) type of interference between two photons that are produced in two coupled atom-cavity systems. The HOM effect in this setup can test the degree of indistinguishability between photons when they are stored inside cavities. This part of the dissertation also includes the study of entanglement between atoms, cavities and atom-cavity systems induced by the photons. Finally, we focus on single-photon interactions with a tiny movable mirror in the context of quantum optomechanics. We investigate how the mechanical motion of the mirror leaves its imprints on the optical spectrum of the photon \n \nThis dissertation includes previously published and unpublished co-authored material.

•Oct 17, 2014•0 citations

Entanglement between two atoms in two distant cavities connected by an optical fiber beyond strong fiber–cavity coupling

Bin Zhang

Optics Communications•Oct 7, 2009•13 citations

Interfacing Atoms and Light—The Smaller the Stronger

Matthias Keller

The strong interaction of neutral atoms with photons in a waveguide cavity may provide a way to create quantum information networks. [Also see Report by Thompson et al. ]

Science•Jun 6, 2013•5 citations
Fiber-integrated micro-optical elements promise a scalable approach to photon collection and beam shaping for quantum information processing. Here, we demonstrate single-step micro-machining of micro-spherical, micro-spiral, and micro-axicon structures directly onto the core of single-mode optical fibers using focused-ion beam (FIB) machining with nanometer-scale precision. Atomic force microscopy reveals that micro-concave and micro-convex spherical surfaces achieve shape accuracies of λ/50λ/50λ/50 and λ/33λ/33λ/33 (at λ=633λ= 633λ=633~nm), respectively. Via optical characterization using a He-Ne laser (633~nm), we verify for the micro-spiral and -axicon structures the expected far-field donut beam patterns. Via Mach-Zehnder interferometry, we verify the azimuthal and radial phase structure of the light emitted from the spiral and axicon fibers, respectively. Surface metrology further shows that FIB processing introduces only a small increase in nanoscale roughness while preserving sub-nanometer RMS surface quality. The monolithically integrated fiber micro-optic elements demonstrated here enable broad use in quantum technology, for example, fiber micro-cavities for cavity quantum electrodynamics, beam shaping for neutral atom trapping, and the generation of structured light for free-space quantum network links.
We study different phenomena associated with single-photon propagation in optical cavities coupled through optical fibers. We first address the issue of storing and delaying single-photon wavepackets in an array of microcavities. This has possible applications in developing reliable and efficient quantum repeaters that will be utilized \n \nin building long distance quantum networks. Second, we investigate a Hong-Ou-Mandel (HOM) type of interference between two photons that are produced in two coupled atom-cavity systems. The HOM effect in this setup can test the degree of indistinguishability between photons when they are stored inside cavities. This part of the dissertation also includes the study of entanglement between atoms, cavities and atom-cavity systems induced by the photons. Finally, we focus on single-photon interactions with a tiny movable mirror in the context of quantum optomechanics. We investigate how the mechanical motion of the mirror leaves its imprints on the optical spectrum of the photon \n \nThis dissertation includes previously published and unpublished co-authored material.