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Centrifugal plasma traps, in which plasma is confined partly by centrifugal forces, represent a possible path to fusion energy production. In centrifugal plasma traps, electric fields naturally arise in the direction parallel to the…

Plasma Physics · Physics 2026-03-04 E. J. Kolmes , I. E. Ochs , N. J. Fisch

We propose the realization of a mechanically squeezed Kerr oscillator with a single ion in a tapered trap. We show that the motion coupling between the axial and radial modes caused by the trap geometry leads to Kerr nonlinearity of the…

Quantum Physics · Physics 2025-04-01 Bogomila S. Nikolova , Motitz Göb , Kilian Singer , Peter A. Ivanov

We investigate the energy dynamics of non-crystallized (melted) ions, confined in a Paul trap. The non-periodic Coulomb interaction experienced by melted ions forms a medium for non-conservative energy transfer from the radio-frequency (rf)…

Magnetic wave perturbations are observed in the solar wind and in the vicinity of Earth's bow shock. For such environments, recent work on magnetic pumping with electrons trapped in the magnetic perturbations have demonstrated the…

Plasma Physics · Physics 2021-03-17 J. Egedal , J. Schroeder , E. Lichko

Cold ions trapped in the vicinity of conductive surfaces experience heating of their oscillatory motion. Typically, the rate of this heating is orders of magnitude larger than expected from electric field fluctuations due to thermal motion…

Atomic Physics · Physics 2018-01-17 Ivan A. Boldin , Alexander Kraft , Christof Wunderlich

The fast ignition paradigm for inertial fusion offers increased gain and tolerance of asymmetry by compressing fuel at low entropy and then quickly igniting a small region. Because this hotspot rapidly disassembles, the ions must be heated…

Plasma Physics · Physics 2023-10-10 Henry Fetsch , Nathaniel J. Fisch

We investigate theoretically the possibility for robust and fast cooling of a trapped atomic ion by transient interaction with a pre-cooled ion. The transient coupling is achieved through dynamical control of the ions' equilibrium…

Quantum Physics · Physics 2020-08-26 Tobias Sägesser , Roland Matt , Robin Oswald , Jonathan P. Home

We describe how two vibrational degrees of freedom of a single trapped ion can be coupled through the action of suitably-chosen laser excitation. We concentrate on a two-dimensional ion trap with dissimilar vibrational frequencies in the x-…

Quantum Physics · Physics 2009-10-30 J. Steinbach , J. Twamley , P. L. Knight

We study the shuttling of an atom in a trap with controllable position and frequency. Using invariant-based inverse engineering, protocols in which the trap is simultaneously displaced and expanded are proposed to speed up transport between…

Quantum Physics · Physics 2017-04-06 A. Tobalina , M. Palmero , S. Martínez-Garaot , J. G. Muga

We investigate theoretically the speed limit of quantum gate operations for ion trap quantum information processors. The proposed methods use laser pulses for quantum gates which entangle the electronic and vibrational degrees of freedom of…

Quantum Physics · Physics 2009-11-06 A. Steane , C. F. Roos , D. Stevens , A. Mundt , D. Leibfried , F. Schmidt-Kaler , R. Blatt

Cold ions in traps are well-established, highly controllable quantum systems with a wide variety of applications in quantum information, precision spectroscopy, clocks and chemistry. Nanomechanical oscillators are used in advanced sensing…

Atomic Physics · Physics 2023-12-04 Moritz Weegen , Martino Poggio , Stefan Willitsch

We engineer the fast rotation of a quantum particle confined in an effectively one-dimensional, harmonic trap, for a predetermined rotation angle and time, avoiding final excitation. Different schemes are proposed with different speed…

Quantum Physics · Physics 2016-08-03 M. Palmero , Shuo Wang , D. Guéry-Odelin , Jr-Shin Li , J. G. Muga

We have measured motional heating rates of trapped atomic ions, a factor that can influence multi-ion quantum logic gate fidelities. Two simplified techniques were developed for this purpose: one relies on Raman sideband detection…

We utilize the combination of two standard trapping techniques, a magnetic trap and an optical trap in a Raman setup, to propose a versatile and tunable trap for cold atoms. The created potential provides several advantages over…

Atomic Physics · Physics 2010-05-21 S. Middelkamp , M. Mayle , I. Lesanovsky , P. Schmelcher

We propose a scheme to implement arbitrary-speed quantum entangling gates on two trapped ions immersed in a large linear crystal of ions, with minimal control of laser beams. For gate speeds slower than the oscillation frequencies in the…

Quantum Physics · Physics 2009-11-11 Shi-Liang Zhu , C. Monroe , L. -M. Duan

We present measurements of the motional heating rate of a trapped ion at different trap frequencies and temperatures between $\sim$0.6 and 1.5 MHz and $\sim$4 and 295 K. Additionally, we examine the possible effect of adsorbed surface…

Atomic Physics · Physics 2015-06-23 C. D. Bruzewicz , J. M. Sage , J. Chiaverini

We present an alternative approach for interconnecting trapped ion processor nodes by a deterministic single ion transfer out of the trap, into a free space trajectory, followed by recapture in the trapping potential. Our experimental…

Quantum Physics · Physics 2021-08-17 Felix Stopp , Henri Lehec , Ferdinand Schmidt-Kaler

Single ions held in linear Paul traps are promising candidates for a future quantum computer. Here, we discuss a two-layer microstructured segmented linear ion trap. The radial and axial potentials are obtained from numeric field…

Quantum Physics · Physics 2009-11-13 Stephan Schulz , Ulrich Poschinger , Kilian Singer , Ferdinand Schmidt-Kaler

With coupled detuned oscillators, either individual or collective oscillations are observable. The latter is used in quantum information processing in linear Paul traps. Here, we study the transition from collective radial modes at stronger…

Ion traps are often loaded from atomic beams produced by resistively heated ovens. We demonstrate an atomic oven which has been designed for fast control of the atomic flux density and reproducible construction. We study the limiting time…