Integrated multi-wavelength control of an ion qubit.
In: Nature, Jg. 586 (2020-10-22), Heft 7830, S. 538-542
Online
academicJournal
Zugriff:
Monolithic integration of control technologies for atomic systems is a promising route to the development of quantum computers and portable quantum sensors1–4. Trapped atomic ions form the basis of high-fidelity quantum information processors5,6 and high-accuracy optical clocks7. However, current implementations rely on free-space optics for ion control, which limits their portability and scalability. Here we demonstrate a surface-electrode ion-trap chip8,9 using integrated waveguides and grating couplers, which delivers all the wavelengths of light required for ionization, cooling, coherent operations and quantum state preparation and detection of Sr + qubits. Laser light from violet to infrared is coupled onto the chip via an optical-fibre array, creating an inherently stable optical path, which we use to demonstrate qubit coherence that is resilient to platform vibrations. This demonstration of CMOS-compatible integrated photonic surface-trap fabrication, robust packaging and enhanced qubit coherence is a key advance in the development of portable trapped-ion quantum sensors and clocks, providing a way towards the complete, individual control of larger numbers of ions in quantum information processing systems. A surface-electrode ion-trap chip is demonstrated, which delivers all the wavelengths of light required for the preparation and operation of ion qubits. [ABSTRACT FROM AUTHOR]
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Titel: |
Integrated multi-wavelength control of an ion qubit.
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Autor/in / Beteiligte Person: | Niffenegger, R. J. ; Stuart, J. ; Sorace-Agaskar, C. ; Kharas, D. ; Bramhavar, S. ; Bruzewicz, C. D. ; Loh, W. ; Maxson, R. T. ; McConnell, R. ; Reens, D. ; West, G. N. ; Sage, J. M. ; Chiaverini, J. |
Link: | |
Zeitschrift: | Nature, Jg. 586 (2020-10-22), Heft 7830, S. 538-542 |
Veröffentlichung: | 2020 |
Medientyp: | academicJournal |
ISSN: | 0028-0836 (print) |
DOI: | 10.1038/s41586-020-2811-x |
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