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  Elementary Laser-Less Quantum Logic Operations with (Anti-)Protons in Penning Traps

Nitzschke, D., Schulte, M., Niemann, M., Cornejo, J. M., Ulmer, S., Lehnert, R., et al. (2020). Elementary Laser-Less Quantum Logic Operations with (Anti-)Protons in Penning Traps. Advanced Quantum Technologies, 1900133. doi:10.1002/qute.201900133.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-A9BD-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-A9C1-1
Genre: Journal Article

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 Creators:
Nitzschke , Diana1, Author
Schulte, Marius2, Author              
Niemann, Malte, Author
Cornejo, Juan M., Author
Ulmer, Stefan, Author
Lehnert, Ralf, Author
Ospelkaus, Christian, Author
Hammerer, Klemens2, Author              
Affiliations:
1AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24009              
2Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Physics, Atomic Physics, physics.atom-ph, Physics, Instrumentation and Detectors, physics.ins-det,Quantum Physics, quant-ph
 Abstract: Static magnetic field gradients superimposed on the electromagnetic trapping potential of a Penning trap can be used to implement laser-less spin-motion couplings that allow the realization of elementary quantum logic operations in the radio-frequency regime. An important scenario of practical interest is the application to $g$-factor measurements with single (anti-)protons to test the fundamental charge, parity, time reversal (CPT) invariance as pursued in the BASE collaboration [Smorra et al., Eur. Phys. J. Spec. Top. 224, 3055-3108 (2015), Smorra et al., Nature 550, 371-374 (2017), Schneider et al., Science 358, 1081-1084 (2017)]. We discuss the classical and quantum behavior of a charged particle in a Penning trap with a superimposed magnetic field gradient. Using analytic and numerical calculations, we find that it is possible to carry out a SWAP gate between the spin and the motional qubit of a single (anti-)proton with high fidelity, provided the particle has been initialized in the motional ground state. We discuss the implications of our findings for the realization of quantum logic spectroscopy in this system.

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 Dates: 2019-12-042020-05-272020
 Publication Status: Published online
 Pages: 10 pages, 4 figures, 1 table; published version
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 Rev. Type: -
 Identifiers: arXiv: 1912.02046
URI: http://arxiv.org/abs/1912.02046
DOI: 10.1002/qute.201900133
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Title: Advanced Quantum Technologies
Source Genre: Journal
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Pages: - Volume / Issue: - Sequence Number: 1900133 Start / End Page: - Identifier: -