Shaping the evanescent field of optical nanofibers for cold atom trapping

Phelan, C. F.; Hennessy, Tara; Busch, Thomas

doi:10.1364/oe.21.027093

Cited by 42 publications

(44 citation statements)

References 19 publications

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“…[53][54][55][56] Recently, efficient propagation of higher order modes through an MNF 33,36,57 has become of interest, especially in the field of fiber-based atom manipulation and trapping. [58][59][60][61] The fabrication of the aforementioned tapered fibers therefore requires a flexible pulling rig system. There are many papers in the literature (and some research theses) which describe experiments that use tapered fibers made using the flame brushing technique; however, the published works give few details about the actual experimental setup of the pulling rig and the specific parameters used.…”

Section: Introductionmentioning

confidence: 99%

Contributed Review: Optical micro- and nanofiber pulling rig

Ward¹,

Maimaiti

Le³

et al. 2014

Review of Scientific Instruments

124

101

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We review the method of producing adiabatic optical micro-and nanofibers using a hydrogen/oxygen flame brushing technique. The flame is scanned along the fiber, which is being simultaneously stretched by two translation stages. The tapered fiber fabrication is reproducible and yields highly adiabatic tapers with either exponential or linear profiles. Details regarding the setup of the flame brushing rig and the various parameters used are presented. Information available from the literature is compiled and further details that are necessary to have a functioning pulling rig are included. This should enable the reader to fabricate various taper profiles, while achieving adiabatic transmission of ~ 99% for fundamental mode propagation. Using this rig, transmissions ranging from 85-95% for higher order modes in an optical nanofiber have been obtained.

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Section: Introductionmentioning

confidence: 99%

Contributed Review: Optical micro- and nanofiber pulling rig

Ward¹,

Maimaiti

Le³

et al. 2014

Review of Scientific Instruments

124

101

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“…Nanofibers supporting higherorder modes (HOMs) provide additional degrees of freedom to enable complex evanescent field profiles for interaction with the surrounding medium. A few works have explored the use for HOM in nanofibers for atom trapping ; Phelan et al (2013), interactions with atoms Kumar et al (2015a), and high-resolution fiber profilometry Hoffman et al (2015); Fatemi et al (2017).…”

Section: Higher-order Modesmentioning

confidence: 99%

“…This enables different possibilities for trapping patterns in the longitudinal direction . Phelan et al (2013) investigate trapping geometries that combine the fundamental mode with one of the next lowest possible modes, namely the HE 21 mode. Counter-propagating, red-detuned HE 21 modes are combined with a blue-detuned HE 11 fundamental mode to form a potential in the shape of four intertwined spirals.…”

Section: Trapping With Higher-order Modesmentioning

confidence: 99%

Optical Nanofibers

Solano

Grover

Hoffman

et al. 2017

Advances in Atomic, Molecular, and Optical Physics

100

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The development of optical nanofibers (ONF) and the study and control of their optical properties when coupling atoms to their electromagnetic modes has opened new possibilities for their use in quantum optics and quantum information science. These ONFs offer tight optical mode confinement (less than the wavelength of light) and diffraction-free propagation. The small cross section of the transverse field allows probing of linear and non-linear spectroscopic features of atoms with exquisitely low power. The cooperativity -the figure of merit in many quantum optics and quantum information systems -tends to be large even for a single atom in the mode of an ONF, as it is proportional to the ratio of the atomic cross section to the electromagnetic mode cross section. ONFs offer a natural bus for information and for inter-atomic coupling through the tightly-confined modes, which opens the possibility of one-dimensional many-body physics and interesting quantum interconnection applications. The presence of the ONF modifies the vacuum field, affecting the spontaneous emission rates of atoms in its vicinity. The high gradients in the radial intensity naturally provide the potential for trapping atoms around the ONF, allowing the creation of onedimensional arrays of atoms. The same radial gradient in the transverse direction of the field is responsible for the existence of a large longitudinal component that introduces the possibility of spin-orbit coupling of the light and the atom, enabling the exploration of chiral quantum optics.

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“…Trapping of atoms around the fibre can be achieved using a setup that relies on two evanescent fields [17,[21][22][23][24][25]. The first field is red-detuned with respect to atomic transition frequency and provides a potential that attracts atoms towards the fibre.…”

Section: Bmentioning

confidence: 99%

“…For this reason, experiments are currently carried out in many labs worldwide that explore the possibility of trapping and manipulating cold atomic gases using optical nanofibres [21][22][23][24][25][26][27][28][29]. Using two-color evanescent fields around nanofibres, an optical dipole trap for laser cooled atoms near to the fibre surface has already been realized [17], which proves that tapered optical fibres are excellent candidates for realizing versatile light matter interfaces.…”

Section: Introductionmentioning

confidence: 99%

Creating superfluid vortex rings in artificial magnetic fields

Sachdeva

Busch

2017

Phys. Rev. A

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Artificial gauge fields are versatile tools that allow to influence the dynamics of ultracold atoms in Bose-Einstein condensates. Here we discuss a method of artificial gauge field generation stemming from the evanescent fields of the curved surface of an optical nanofibre. The exponential decay of the evanescent fields leads to large gradients in the generalized Rabi frequency and therefore to the presence of geometric vector and scalar potentials. By solving the Gross-Pitaevskii equation in the presence of the artificial gauge fields originating from the fundamental HE11 mode of the fibre, we show that vortex rings can be created in a controlled manner. We also calculate the magnetic fields resulting from the higher order HE21, TE01, and TM01 modes and compare them to the fundamental HE11 mode.

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Shaping the evanescent field of optical nanofibers for cold atom trapping

Cited by 42 publications

References 19 publications

Contributed Review: Optical micro- and nanofiber pulling rig

Contributed Review: Optical micro- and nanofiber pulling rig

Optical Nanofibers

Creating superfluid vortex rings in artificial magnetic fields

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