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A New Approach to Measurement of Heating Rate of Trapped Ions

徐酉阳, 周飞, 谢艺

理论物理通讯：英文版Jan 1, 20100 citations

Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity

D. A. Hite, K. S. McKay, S. Kotler +3 more

arXiv:1701.04814MRS AdvancesJan 12, 201728 citations

Measuring Anomalous Heating in a Planar Ion Trap with Variable Ion-Surface Separation

Ivan A. Boldin, Alexander Kraft, Christof Wunderlich

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 of electrons in the conductors. This effect, known as anomalous heating, is not fully understood. One of the open questions is the heating rate's dependence on the ion-electrode separation. We present a direct measurement of this dependence in an ion trap of simple planar geometry. The heating rates are determined by taking images of a single ^{172}Yb^{+} ion's resonance fluorescence after a variable heating time and deducing the trapped ion's temperature from measuring its average oscillation amplitude. Assuming a power law for the heating rate versus ion-surface separation dependence, an exponent of -3.79±0.12 is measured.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 of electrons in the conductors. This effect, known as anomalous heating, is not fully understood. One of the open questions is the heating rate's dependence on the ion-electrode separation. We present a direct measurement of this dependence in an ion trap of simple planar geometry. The heating rates are determined by taking images of a single ^{172}Yb^{+} ion's resonance fluorescence after a variable heating time and deducing the trapped ion's temperature from measuring its average oscillation amplitude. Assuming a power law for the heating rate versus ion-surface separation dependence, an exponent of -3.79±0.12 is measured.

arXiv:1708.03147Physical Review LettersJan 12, 201860 citations

A New Approach to Measurement of Heating Rate of Trapped Ions

You-Yang Xu, Zhou Fei, Yi Xie

We propose a new scheme to estimate the heating rate of trapped ions in thermal states. By applying a controlled-U gate between the internal and the motional states of one of the trapped ions, we could obtain the mean phonon number from the population of the internal state of the ion. The imperfection due to fluctuations of the relevant parameters in real experiments is considered and we analyze the experimental feasibility of our scheme with sophisticated ion trap techniques.

Communications in Theoretical PhysicsSep 1, 20100 citations

Scaling and Suppression of Heating in an Adjustable Ion Trap

Steven Olmschenk, Louis Deslauriers, D. Stick +3 more

Bulletin of the American Physical SocietyMay 18, 20060 citations

Towards a quantum repeater using a surface-trap-integrated microcavity and trapped ions

Lindsay Sonderhouse, Margie Bruff, Katie David +2 more

Trapped ions are a leading candidate for the “stationary qubits” of a quantum network. However, thus far remote entanglement rates have primarily been limited by low photon collection efficiency. In this work, we propose an architecture for a long-range, high-entanglement-rate quantum repeater. Our strategy involves using a micromirror fiber-based cavity, integrated with a surface electrode trap at cryogenic temperatures, to achieve high photon collection efficiency while maintaining high mechanical stability and low ion motional heating. The emitted photons can be efficiently and coherently converted to telecom wavelengths, facilitating long-distance networking.Trapped ions are a leading candidate for the “stationary qubits” of a quantum network. However, thus far remote entanglement rates have primarily been limited by low photon collection efficiency. In this work, we propose an architecture for a long-range, high-entanglement-rate quantum repeater. Our strategy involves using a micromirror fiber-based cavity, integrated with a surface electrode trap at cryogenic temperatures, to achieve high photon collection efficiency while maintaining high mechanical stability and low ion motional heating. The emitted photons can be efficiently and coherently converted to telecom wavelengths, facilitating long-distance networking.

Quantum Computing, Communication, and SimulationMar 5, 20260 citations

Heating rates in a thin ion trap for microcavity experiments

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