A planar Penning trap

Ståhl, S.; Galve, Fernando; Alonso, J.; Djekic, S.; Quint, W.; Valenzuela, T.; Verdú, J.; Vogel, Manuel; Werth, G.

doi:10.1140/epjd/e2004-00179-x

Cited by 73 publications

(87 citation statements)

References 31 publications

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“…Neglecting resonant absorption in the wire, the coupling for a typical trap size of 1mm will be roughly 100 times lower than the onsite potential [27]. For even smaller traps of size 0.1mm, these quantities still differ by a factor of 10.…”

Section: Physical Implementationsmentioning

confidence: 96%

Quantum router based on ac control of qubit chains

et al. 2009

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We study the routing of quantum information in qubit chains. This task is achieved by suitably chosen time-dependent local fields acting on the qubits. Employing the physics of coherent destruction of tunneling, we demonstrate that a driving-induced renormalization of the coupling between neighboring qubits provides the key for controlling the transduction of quantum information between permanently coupled qubits. We employ this idea for building a quantum router. Moreover, we discuss the experimental implementation with Penning traps, and study the robustness of our protocol under realistic experimental conditions, such as fabrication uncertainties and decoherence.

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Section: Physical Implementationsmentioning

confidence: 96%

Quantum router based on ac control of qubit chains

et al. 2009

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“…1(b) and may consist of any number of concentric electrodes of arbitrary widths to which different voltages can be applied. This design originated in a study of surface electrode traps [10,11] but was subsequently strongly inspired by work on planar Penning traps [12], where a similar geometry was used to create a static electric quadrupole field that, when combined with a strong homogeneous magnetic field, gave rise to a confining potential above the surface of the electrodes. The point Paul trap also bears close resemblance to the rf ring and the rf hole traps [13]; however, it differs in that the ion is trapped above the surface of the electrodes as opposed to in between, which makes this geometry better suited for microfabrication.…”

Section: Introductionmentioning

confidence: 99%

Surface-electrode point Paul trap

et al. 2010

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We present a model as well as experimental results for a surface electrode radiofrequency Paul trap that has a circular electrode geometry well suited for trapping single ions and two-dimensional planar ion crystals. The trap design is compatible with microfabrication and offers a simple method by which the height of the trapped ions above the surface may be changed in situ. We demonstrate trapping of single 88 Sr + ions over an ion height range of 200-1000 µm for several hours under Doppler laser cooling and use these to characterize the trap, finding good agreement with our model.

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“…This charge induces an electrical signal that propagates through the transmission line and influences the motion of the electron at the other end and vice versa. The explicit expression on H int depends on the particular trap configuration, and we outline a derivation in appendix A for the planar Penning trap described in [5]. In this configuration and by assuming small-amplitude oscillations around the trap center, the interaction HamiltonianĤ int takes the form…”

Section: Hamiltonianmentioning

confidence: 99%

“…In the context of quantum computing architectures, this interaction allows the implementation of quantum gates [4,5]. The speed of the gate is proportional to 12 .…”

Section: Coherent Couplingmentioning

confidence: 99%

“…This is the scope of our paper: the quantum manipulation of electrons in Penning traps. Several configurations of electron trap arrays have been proposed such as a cylindrical chain of electrodes [3,4], a set of wires acting as an electrode [7], or an array of planar ring electrodes [5]. In the two former configurations, the neighboring electrons can be coupled by direct Coulomb interaction.…”

Section: Introductionmentioning

confidence: 99%

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Wiring up single electron traps to perform quantum gates

Zurita-Sánchez

Henkel

2008

New J. Phys.

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Two quantum oscillators coupled with a planar radio frequency ion trap Chen Liang and Gao Ke-Lin -Review I Marzoli, P Tombesi, G Ciaramicoli et al. Abstract. Two electrons in planar Penning traps can be coupled by connecting the trap electrodes with a metallic wire. The wire provides a capacitive and resistive link between the image charges that the electron oscillation (axial motion) is inducing in the electrodes. This can be operated as a quantum network to transfer excitation quanta between the traps and to entangle the two electrons. We give a detailed analysis of this system in the dispersive limit and assess the impact of resistive thermal noise. The latter is found to be remarkably small at temperatures below 4 K in miniaturized planar traps (sizes below 1 mm). The master equation for the two-electron system in the presence of resistive noise is solved exactly. We compute fidelities for basic quantum gates needed in quantum information processing.

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A planar Penning trap

Cited by 73 publications

References 31 publications

Quantum router based on ac control of qubit chains

Quantum router based on ac control of qubit chains

Surface-electrode point Paul trap

Wiring up single electron traps to perform quantum gates

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