Two mode coupling in a single ion oscillator via parametric resonance

Abstract

Atomic ions, confined in radio-frequency Paul ion traps, are a promising candidate to host a future quantum information processor. In this letter, we demonstrate a method to couple two motional modes of a single trapped ion, where the coupling mechanism is based on applying electric fields rather than coupling the ion's motion to a light field. This reduces the design constraints on the experimental apparatus considerably. As an application of this mechanism, we cool a motional mode close to its ground state without accessing it optically. As a next step, we apply this technique to measure the mode's heating rate, a crucial parameter determining the trap quality. In principle, this method can be used to realize a two-mode quantum parametric amplifier.

8 pages, 5 figures

References in corpus (8)

• Quantum computing with trapped ions
• 14-qubit entanglement: creation and coherence
• Heating of trapped ions from the quantum ground state
• Experimental demonstration of ground state laser cooling with electromagnetically induced transparency
• Process tomography of ion trap quantum gates
• Reduction of anomalous heating in an in-situ-cleaned ion trap
• Wiring up trapped ions to study aspects of quantum information
• Quantum information processing with trapped electrons and superconducting electronics

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