Penning Micro-trap for Quantum Computing

Overview

Journal Nature

Specialty Science

Date 2024 Mar 14

PMID 38480890

Authors

Shreyans Jain

Tobias Sagesser

Pavel Hrmo

Celeste Torkzaban

Martin Stadler

Robin Oswald

Chris Axline

Amado Bautista-Salvador

Christian Ospelkaus

Daniel Kienzler

Jonathan Home

Affiliations

Soon will be listed here.

Abstract

Trapped ions in radio-frequency traps are among the leading approaches for realizing quantum computers, because of high-fidelity quantum gates and long coherence times. However, the use of radio-frequencies presents several challenges to scaling, including requiring compatibility of chips with high voltages, managing power dissipation and restricting transport and placement of ions. Here we realize a micro-fabricated Penning ion trap that removes these restrictions by replacing the radio-frequency field with a 3 T magnetic field. We demonstrate full quantum control of an ion in this setting, as well as the ability to transport the ion arbitrarily in the trapping plane above the chip. This unique feature of the Penning micro-trap approach opens up a modification of the quantum charge-coupled device architecture with improved connectivity and flexibility, facilitating the realization of large-scale trapped-ion quantum computing, quantum simulation and quantum sensing.

References

Ballance C, Harty T, Linke N, Sepiol M, Lucas D . High-Fidelity Quantum Logic Gates Using Trapped-Ion Hyperfine Qubits. Phys Rev Lett. 2016; 117(6):060504. DOI: 10.1103/PhysRevLett.117.060504. View

Clark C, Tinkey H, Sawyer B, Meier A, Burkhardt K, Seck C . High-Fidelity Bell-State Preparation with ^{40}Ca^{+} Optical Qubits. Phys Rev Lett. 2021; 127(13):130505. DOI: 10.1103/PhysRevLett.127.130505. View

Srinivas R, Burd S, Knaack H, Sutherland R, Kwiatkowski A, Glancy S . High-fidelity laser-free universal control of trapped ion qubits. Nature. 2021; 597(7875):209-213. PMC: 11165722. DOI: 10.1038/s41586-021-03809-4. View

Wang P, Luan C, Qiao M, Um M, Zhang J, Wang Y . Single ion qubit with estimated coherence time exceeding one hour. Nat Commun. 2021; 12(1):233. PMC: 7801401. DOI: 10.1038/s41467-020-20330-w. View

Pino J, Dreiling J, Figgatt C, Gaebler J, Moses S, Allman M . Demonstration of the trapped-ion quantum CCD computer architecture. Nature. 2021; 592(7853):209-213. DOI: 10.1038/s41586-021-03318-4. View

Kielpinski D, Monroe C, Wineland D . Architecture for a large-scale ion-trap quantum computer. Nature. 2002; 417(6890):709-11. DOI: 10.1038/nature00784. View

Home J, Hanneke D, Jost J, Amini J, Leibfried D, Wineland D . Complete methods set for scalable ion trap quantum information processing. Science. 2009; 325(5945):1227-30. DOI: 10.1126/science.1177077. View

Blakestad R, Ospelkaus C, Vandevender A, Amini J, Britton J, Leibfried D . High-fidelity transport of trapped-ion qubits through an X-junction trap array. Phys Rev Lett. 2009; 102(15):153002. DOI: 10.1103/PhysRevLett.102.153002. View

Burton W, Estey B, Hoffman I, Perry A, Volin C, Price G . Transport of Multispecies Ion Crystals through a Junction in a Radio-Frequency Paul Trap. Phys Rev Lett. 2023; 130(17):173202. DOI: 10.1103/PhysRevLett.130.173202. View

10.

Ahmadi M, Alves B, Baker C, Bertsche W, Butler E, Capra A . Observation of the 1S-2S transition in trapped antihydrogen. Nature. 2016; 541(7638):506-510. DOI: 10.1038/nature21040. View

11.

Ulmer S, Smorra C, Mooser A, Franke K, Nagahama H, Schneider G . High-precision comparison of the antiproton-to-proton charge-to-mass ratio. Nature. 2015; 524(7564):196-9. DOI: 10.1038/nature14861. View

12.

Hanneke D, Fogwell S, Gabrielse G . New measurement of the electron magnetic moment and the fine structure constant. Phys Rev Lett. 2008; 100(12):120801. DOI: 10.1103/PhysRevLett.100.120801. View

13.

DiSciacca J, Gabrielse G . Direct measurement of the proton magnetic moment. Phys Rev Lett. 2012; 108(15):153001. DOI: 10.1103/PhysRevLett.108.153001. View

14.

Britton J, Sawyer B, Keith A, Wang C, Freericks J, Uys H . Engineered two-dimensional Ising interactions in a trapped-ion quantum simulator with hundreds of spins. Nature. 2012; 484(7395):489-92. DOI: 10.1038/nature10981. View

15.

Bohnet J, Sawyer B, Britton J, Wall M, Rey A, Foss-Feig M . Quantum spin dynamics and entanglement generation with hundreds of trapped ions. Science. 2016; 352(6291):1297-301. DOI: 10.1126/science.aad9958. View

16.

Leibfried D, DeMarco B, Meyer V, Lucas D, Barrett M, Britton J . Experimental demonstration of a robust, high-fidelity geometric two ion-qubit phase gate. Nature. 2003; 422(6930):412-5. DOI: 10.1038/nature01492. View

17.

Wilson A, Colombe Y, Brown K, Knill E, Leibfried D, Wineland D . Tunable spin-spin interactions and entanglement of ions in separate potential wells. Nature. 2014; 512(7512):57-60. DOI: 10.1038/nature13565. View

18.

Powell H, Segal D, Thompson R . Axialization of laser cooled magnesium ions in a penning trap. Phys Rev Lett. 2002; 89(9):093003. DOI: 10.1103/PhysRevLett.89.093003. View

19.

Uhrig G . Keeping a quantum bit alive by optimized pi-pulse sequences. Phys Rev Lett. 2007; 98(10):100504. DOI: 10.1103/PhysRevLett.98.100504. View

20.

Biercuk M, Uys H, VanDevender A, Shiga N, Itano W, Bollinger J . Optimized dynamical decoupling in a model quantum memory. Nature. 2009; 458(7241):996-1000. DOI: 10.1038/nature07951. View