Suppression of Ion Transport due to Long-Lived Subwavelength Localization by an Optical Lattice

Karpa, Leon; Bylinskii, Alexei; Gangloff, Dorian; Cetina, Marko; Vuletić, Vladan

doi:10.1103/physrevlett.111.163002

Cited by 52 publications

(83 citation statements)

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“…An alternative means to trapping atomic ions is to exploit their electric susceptibility and confine them in a trap formed by an optical potential, identically to techniques developed for trapping neutral atoms [132]. Although dipole forces generated by typically achievable optical traps are much smaller than electric forces in a Paul Trap, the advantages of a micromotion-free environment, combined with the versatility of optical potentials in, for example, generating arrays of trapping sites [66], have motivated a set of experiments aimed at optically trapping ions [133][134][135]. Assuming that ions can be optically trapped long enough for a computational cycle, hybrid trapping systems combining electrostatic and optical potentials could offer an alternative to Paul traps for large-scale ion processors.…”

Section: A Versatile Rf-free Trap: Ions In An Optical Latticementioning

confidence: 99%

Technologies for trapped-ion quantum information systems

Eltony

Gangloff

Shi

et al. 2016

Quantum Inf Process

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Scaling up from prototype systems to dense arrays of ions on chip, or vast networks of ions connected by photonic channels, will require developing entirely new technologies that combine miniaturized ion trapping systems with devices to capture, transmit, and detect light, while refining how ions are confined and controlled. Building a cohesive ion system from such diverse parts involves many challenges, including navigating materials incompatibilities and undesired coupling between elements. Here, we review our recent efforts to create scalable ion systems incorporating unconventional materials such as graphene and indium tin oxide, integrating devices like optical fibers and mirrors, and exploring alternative ion loading and trapping techniques.

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Section: A Versatile Rf-free Trap: Ions In An Optical Latticementioning

confidence: 99%

Technologies for trapped-ion quantum information systems

Eltony

Gangloff

Shi

et al. 2016

Quantum Inf Process

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“…However, electric fieldinduced dipolar forces have only recently been applied to trap, or alter the trapping conditions of, atomic ions [15][16][17][18]. The interest here has been partly to demonstrate * drewsen@phys.au.dk trapping of a single ion with localized fields in order to e.g.…”

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confidence: 99%

Sub-micron positioning of trapped ions with respect to the absolute center of a standing-wave cavity field

et al. 2013

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We demonstrate that it is possible, with sub-micron precision, to locate the absolute center of a Fabry-Pérot resonator oriented along the rf-field-free axis of a linear Paul trap through the application of two simultaneously resonating optical fields. In particular, we apply a probe field, which is near-resonant with an electronic transition of trapped ions, simultaneously with an offresonant strong field acting as a periodic AC Stark-shifting potential. Through the resulting spatially modulated fluorescence signal we can find the cavity center of an 11.7 mm-long symmetric FabryPérot cavity with a precision of ±135 nm, which is smaller than the periodicity of the individual standing wave fields. This can e.g. be used to position the minimum of the axial trap potential with respect to the center of the cavity at any location along the cavity mode.

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“…We also find that the probabilities agree well with a simple Boltzmann model, despite the dynamical nature of the process. Remarkably, the average frictional energy dissipation U diss and the maximal static friction force F static are mostly unaffected by the transition from the single-slip to the multislip regime, increasing approximately linearly with the depth of the substrate potential.The potential energy landscape experienced by the ion is produced by the combination of an electrostatic harmonic potential provided by a linear Paul trap [41] and a sinusoidal optical lattice [30][31][32]35]. The potential energy of the ion at position x is given by the Prandtl-Tomlinson model [42,43], VðxÞ Ka 2…”

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confidence: 99%

“…The potential energy landscape experienced by the ion is produced by the combination of an electrostatic harmonic potential provided by a linear Paul trap [41] and a sinusoidal optical lattice [30][31][32]35]. The potential energy of the ion at position x is given by the Prandtl-Tomlinson model [42,43], VðxÞ Ka 2…”

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“…In analogy to AFM, the emulator features a small probe (one or several trapped ions) transported over a periodic substrate potential created by an optical standing wave [Figs. 1(a) and 1(b)] [33][34][35]. To date, we have used the emulator to study the velocity dependence of nanofriction [30], as well as the interplay between superlubricity [31,[36][37][38][39] and the Aubry transition [32].…”

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Multislip Friction with a Single Ion

et al. 2017

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A trapped ion transported along a periodic potential is studied as a paradigmatic nanocontact frictional interface. The combination of the periodic corrugation potential and a harmonic trapping potential creates a one-dimensional energy landscape with multiple local minima, corresponding to multistable stick-slip friction. We measure the probabilities of slipping to the various minima for various corrugations and transport velocities. The observed probabilities show that the multislip regime can be reached dynamically at smaller corrugations than would be possible statically, and can be described by an equilibrium Boltzmann model. While a clear microscopic signature of multislip behavior is observed for the ion motion, the frictional force and dissipation are only weakly affected by the transition to multistable potentials. DOI: 10.1103/PhysRevLett.119.043601 Stick-slip friction is a ubiquitous nonequilibrium dynamical process that occurs at the interface between surfaces across a wide range of length scales [1][2][3][4][5][6]. The term stick slip describes the system's response to an applied shear force: the surfaces slip out of a local minimum in the interface energy landscape, and stick into a new lowerenergy minimum, releasing heat in the process.Recent advances in atomic force microscopy (AFM) have extended the study of stick-slip friction to the atomic scale, where atom-by-atom slips occur at the interface between a probe tip and a periodic substrate [7][8][9][10][11][12][13][14][15][16][17][18]. For a single-atom probe, the number of local minima in the probe-substrate interaction potential is determined by the ratio of the periodic substrate potential to the spring constant with which the probe is bound to its support object. As the load on the probe is increased, or equivalently, the periodic substrate potential is deepened, the system transitions from a bistable regime (where the probe deterministically single slips from the first minimum to the second) to a multistable regime (where a probe can stochastically multislip to one of several local minima). This has been demonstrated in AFM simulations [19][20][21][22] and experiments [23][24][25] where single-slip and multislip events have been clearly differentiated. However, in the absence of control over dissipation rates and the microscopic energy landscape, it is difficult to tie the observations to ab initio friction models.Following theoretical proposals [26][27][28][29], we have recently demonstrated a trapped-ion friction emulator with extensive control over all microscopic interface parameters [30][31][32]. In analogy to AFM, the emulator features a small probe (one or several trapped ions) transported over a In this Letter, we study multislip friction in deep substrate potentials. We observe the ion fluorescence associated with slip events, from which we directly extract the temperature-and velocity-dependent probabilities for the ion to localize in one of the available local minima. We find that at finite rethermalization times following a s...

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Suppression of Ion Transport due to Long-Lived Subwavelength Localization by an Optical Lattice

Cited by 52 publications

References 41 publications

Technologies for trapped-ion quantum information systems

Technologies for trapped-ion quantum information systems

Sub-micron positioning of trapped ions with respect to the absolute center of a standing-wave cavity field

Multislip Friction with a Single Ion

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