Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits

Joseph Thom; Ben Yuen; Guido  Wilpers; Erling Riis; Alastair G. Sinclair

doi:10.1007/s00340-018-6955-4

Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits

Joseph Thom, Ben Yuen, Guido Wilpers, Erling Riis, Alastair G. Sinclair

Research output: Contribution to journal › Article

Abstract

We demonstrate a system for intensity stabilisation of optical pulse sequences used in laser-driven quantum control of trapped ions. Intensity instability is minimised by active stabilisation of the power (over a dynamic range of > 10⁴ ) and position of the focused beam at the ion. The fractional Allan deviations in power were found to be < 2.2 × 10⁻⁴ for averaging times from 1 to 16,384 s. Over similar times, the absolute Allan deviation of the beam position is < 0.1 μm for a 45 μm beam diameter. Using these residual power and position instabilities, we estimate the associated contributions to infidelity in example qubit logic gates to be below 10⁻⁶ per gate.

Language	English
Number of pages	12
Journal	Applied Physics B: Lasers and Optics
Volume	124
Issue number	90
Early online date	3 May 2018
DOIs	10.1007/s00340-018-6955-4
Publication status	E-pub ahead of print - 3 May 2018

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stabilization

pulses

lasers

deviation

dynamic range

logic

ions

estimates

Keywords

optical pulse
ions
laser-driven qubits

Cite this

Thom, J., Yuen, B., Wilpers, G., Riis, E., & Sinclair, A. G. (2018). Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits. Applied Physics B: Lasers and Optics, 124(90). https://doi.org/10.1007/s00340-018-6955-4

Thom, Joseph ; Yuen, Ben ; Wilpers, Guido ; Riis, Erling ; Sinclair, Alastair G. / Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits. In: Applied Physics B: Lasers and Optics. 2018 ; Vol. 124, No. 90.

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abstract = "We demonstrate a system for intensity stabilisation of optical pulse sequences used in laser-driven quantum control of trapped ions. Intensity instability is minimised by active stabilisation of the power (over a dynamic range of > 104 ) and position of the focused beam at the ion. The fractional Allan deviations in power were found to be < 2.2 × 10−4 for averaging times from 1 to 16,384 s. Over similar times, the absolute Allan deviation of the beam position is < 0.1 μm for a 45 μm beam diameter. Using these residual power and position instabilities, we estimate the associated contributions to infidelity in example qubit logic gates to be below 10−6 per gate.",

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Thom, J, Yuen, B, Wilpers, G, Riis, E & Sinclair, AG 2018, 'Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits' Applied Physics B: Lasers and Optics, vol. 124, no. 90. https://doi.org/10.1007/s00340-018-6955-4

Intensity stabilisation of optical pulse sequences for coherent control of laser-driven qubits. / Thom, Joseph; Yuen, Ben; Wilpers, Guido ; Riis, Erling ; Sinclair, Alastair G.

In: Applied Physics B: Lasers and Optics, Vol. 124, No. 90, 03.05.2018.

Research output: Contribution to journal › Article

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AU - Sinclair, Alastair G.

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