Abstract
In our experiment a trapped \(\mathrm {^{88}Sr^+}\) ion is lost by double ionisation after typically several hundred excitations to a Rydberg state. Similarly double ionisation occurs in \({\sim }{}{0.3}{}\mathrm {\%}\) excitations to a Rydberg state in the Mainz experiment [1]. Double ionisation thus presents an obstacle in trapped Rydberg ion experiments, discussed in Sect. 5.1. We know the ion is lost by double ionisation by measuring the final product to be \(\mathrm {^{88}Sr^{2+}}\), these measurements are described in Sect. 5.2. We suspect Rydberg states with higher principal quantum numbers are more prone to double ionisation loss and that blackbody radiation increases the likelihood of double ionisation, though we have yet to carry out a systematic investigation of the effects of different parameters on the ion loss rate. Müller et al. [2] briefly discuss double ionisation driven by the electric fields of the trap.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
Switching off the trap is not an option in our experiment because Coulomb repulsion between two ions initially separated by \(5\,\upmu \)m would cause them to become separated by \(30\,\upmu \)m in just \(1\,\upmu \)s.
- 2.
Andor iXon3 897 with pixel size \(16\,\upmu \)m.
References
Feldker T (2017) Rydberg excitation of trapped ions. Ph.D thesis, Johannes Gutenberg-Universität Mainz
Müller M, Liang L, Lesanovsky I, Zoller P (2008) Trapped Rydberg ions: from spin chains to fast quantum gates. New J Phys 10:093009
Leibrandt DR et al (2007) Laser ablation loading of a surfaceelectrode ion trap. Phys Rev A 76:055403
Łabaziewicz J (2008) High fidelity quantum gates with ions in cryogenic microfabricated ion traps. Ph.D thesis, Massachusetts Institute of Technology
Kielpinski D, Monroe C, Wineland DJ (2002) Architecture for a large-scale ion-trap quantum computer. Nature 417:709
Ofek N et al (2016) Extending the lifetime of a quantum bit with error correction in superconducting circuits. Nature 536:441
Browaeys A, Barredo D, Lahaye T (2016) Experimental investigations of dipole-dipole interactions between a few Rydberg atoms. J Phys B 49:152001
Saffman M (2016) Quantum computing with atomic qubits and Rydberg interactions: progresss s and challenges. J Phys B 49:202001
Saffman M, Walker TG (2005) Analysis of a quantum logic device based on dipole-dipole interactions of optically trapped Rydberg atoms. Phys Rev A 72:022347
Potvliege RM, Adams CS (2006) Photo-ionization in far-offresonance optical lattices. New J Phys 8:163
Johnson TA et al (2008) Rabi oscillations between ground and Rydberg states with dipole-dipole atomic interactions. Phys Rev Lett 100:113003
Saffman M, Walker TG, Mølmer K (2010) Quantum information with Rydberg atoms. Rev Mod Phys 82:2313–2363
Beterov II, Tretyakov DB, Ryabtsev II, Ekers A, Bezuglov NN (2007) Ionization of sodium and rubidium nS, nP, and nD Rydberg atoms by blackbody radiation. Phys Rev A 75:052720
James D (1998) Quantum dynamics of cold trapped ions with application to quantum computation. Appl Phys B 66:181–190
Home JP, Hanneke D, Jost JD, Leibfried D, Wineland DJ (2011) Normal modes of trapped ions in the presence of anharmonic trap potentials. New J Phys 13:073026
Audi G, Bersillon O, Blachot J, Wapstra A (2003) The Nubase evaluation of nuclear and decay properties. Nucl Phys A 729:3–128
Nägerl HC, Leibfried D, Schmidt-Kaler F, Eschner J, Blatt R (1998) Coherent excitation of normal modes in a string of \(\text{ Ca }^{+}\) ions. Opt Express 3:89–96
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Higgins, G. (2019). Ion Loss by Double Ionisation. In: A Single Trapped Rydberg Ion. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-33770-4_5
Download citation
DOI: https://doi.org/10.1007/978-3-030-33770-4_5
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-33769-8
Online ISBN: 978-3-030-33770-4
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)