Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions
We propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as “passive” qubits that store quantum information. The “active” qubits are switched on optically by fast coherent tra...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
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American Physical Society
2021-01-01
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Series: | PRX Quantum |
Online Access: | http://doi.org/10.1103/PRXQuantum.2.010312 |
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author | Manuel Grimm Adrian Beckert Gabriel Aeppli Markus Müller |
author_facet | Manuel Grimm Adrian Beckert Gabriel Aeppli Markus Müller |
author_sort | Manuel Grimm |
collection | DOAJ |
description | We propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as “passive” qubits that store quantum information. The “active” qubits are switched on optically by fast coherent transitions to excited crystal field states with a magnetic moment, and the magnetic dipole interaction between these states is used to implement controlled not (cnot) gates. We compare our proposal with others, noting particularly the much improved cnot gate time as compared with a Si:P proposal, also relying on magnetic dipole interactions between active qubits, and rare-earth schemes depending on the dipole blockade for qubits spaced by more than of the order of 1nm. |
first_indexed | 2024-12-22T02:05:50Z |
format | Article |
id | doaj.art-b48c6cfcb97c461d9e2df7b89f8be181 |
institution | Directory Open Access Journal |
issn | 2691-3399 |
language | English |
last_indexed | 2024-12-22T02:05:50Z |
publishDate | 2021-01-01 |
publisher | American Physical Society |
record_format | Article |
series | PRX Quantum |
spelling | doaj.art-b48c6cfcb97c461d9e2df7b89f8be1812022-12-21T18:42:32ZengAmerican Physical SocietyPRX Quantum2691-33992021-01-012101031210.1103/PRXQuantum.2.010312Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth IonsManuel GrimmAdrian BeckertGabriel AeppliMarkus MüllerWe propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as “passive” qubits that store quantum information. The “active” qubits are switched on optically by fast coherent transitions to excited crystal field states with a magnetic moment, and the magnetic dipole interaction between these states is used to implement controlled not (cnot) gates. We compare our proposal with others, noting particularly the much improved cnot gate time as compared with a Si:P proposal, also relying on magnetic dipole interactions between active qubits, and rare-earth schemes depending on the dipole blockade for qubits spaced by more than of the order of 1nm.http://doi.org/10.1103/PRXQuantum.2.010312 |
spellingShingle | Manuel Grimm Adrian Beckert Gabriel Aeppli Markus Müller Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions PRX Quantum |
title | Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions |
title_full | Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions |
title_fullStr | Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions |
title_full_unstemmed | Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions |
title_short | Universal Quantum Computing Using Electronuclear Wavefunctions of Rare-Earth Ions |
title_sort | universal quantum computing using electronuclear wavefunctions of rare earth ions |
url | http://doi.org/10.1103/PRXQuantum.2.010312 |
work_keys_str_mv | AT manuelgrimm universalquantumcomputingusingelectronuclearwavefunctionsofrareearthions AT adrianbeckert universalquantumcomputingusingelectronuclearwavefunctionsofrareearthions AT gabrielaeppli universalquantumcomputingusingelectronuclearwavefunctionsofrareearthions AT markusmuller universalquantumcomputingusingelectronuclearwavefunctionsofrareearthions |