Coherent storage of microwave excitations in rare-earth nuclear spins
Interfacing between various elements of a computer--from memory to processors to long range communication--will be as critical for quantum computers as it is for classical computers today. Paramagnetic rare-earth doped crystals, such as Nd(3+):Y2SiO5(YSO), are excellent candidates for such a quantum...
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Veröffentlicht in: | Physical review letters 2015-05, Vol.114 (17), p.170503-170503, Article 170503 |
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creator | Wolfowicz, Gary Maier-Flaig, Hannes Marino, Robert Ferrier, Alban Vezin, Hervé Morton, John J L Goldner, Philippe |
description | Interfacing between various elements of a computer--from memory to processors to long range communication--will be as critical for quantum computers as it is for classical computers today. Paramagnetic rare-earth doped crystals, such as Nd(3+):Y2SiO5(YSO), are excellent candidates for such a quantum interface: they are known to exhibit long optical coherence lifetimes (for communication via optical photons), possess a nuclear spin (memory), and have in addition an electron spin that can offer hybrid coupling with superconducting qubits (processing). Here we study two of these three elements, demonstrating coherent storage and retrieval between electron and (145)Nd nuclear spin states in Nd(3+):YSO. We find nuclear spin coherence times can reach 9 ms at ∼5 K, about 2 orders of magnitude longer than the electron spin coherence, while quantum state and process tomography of the storage or retrieval operation between the electron and nuclear spin reveal an average state fidelity of 0.86. The times and fidelities are expected to further improve at lower temperatures and with more homogeneous radio-frequency excitation. |
doi_str_mv | 10.1103/physrevlett.114.170503 |
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Paramagnetic rare-earth doped crystals, such as Nd(3+):Y2SiO5(YSO), are excellent candidates for such a quantum interface: they are known to exhibit long optical coherence lifetimes (for communication via optical photons), possess a nuclear spin (memory), and have in addition an electron spin that can offer hybrid coupling with superconducting qubits (processing). Here we study two of these three elements, demonstrating coherent storage and retrieval between electron and (145)Nd nuclear spin states in Nd(3+):YSO. We find nuclear spin coherence times can reach 9 ms at ∼5 K, about 2 orders of magnitude longer than the electron spin coherence, while quantum state and process tomography of the storage or retrieval operation between the electron and nuclear spin reveal an average state fidelity of 0.86. 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Paramagnetic rare-earth doped crystals, such as Nd(3+):Y2SiO5(YSO), are excellent candidates for such a quantum interface: they are known to exhibit long optical coherence lifetimes (for communication via optical photons), possess a nuclear spin (memory), and have in addition an electron spin that can offer hybrid coupling with superconducting qubits (processing). Here we study two of these three elements, demonstrating coherent storage and retrieval between electron and (145)Nd nuclear spin states in Nd(3+):YSO. We find nuclear spin coherence times can reach 9 ms at ∼5 K, about 2 orders of magnitude longer than the electron spin coherence, while quantum state and process tomography of the storage or retrieval operation between the electron and nuclear spin reveal an average state fidelity of 0.86. The times and fidelities are expected to further improve at lower temperatures and with more homogeneous radio-frequency excitation.</description><subject>Chemical Sciences</subject><subject>Coherence</subject><subject>Electron spin</subject><subject>Excitation</subject><subject>Microwaves</subject><subject>Nuclear spin</subject><subject>or physical chemistry</subject><subject>Qubits (quantum computing)</subject><subject>Rare earth metals</subject><subject>Retrieval</subject><subject>Theoretical and</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqFkV1LwzAUQIMoOj_-gvRRH6r3tmmSPsqYThgoos8hzW5dpWtnklb990ame_Up4XBuEnIYO0e4QoT8erP68o7GlkKIgF-hhALyPTZBkGUqI9pnE4Ac0xJAHrFj798AADOhDtlRVpRSZcgnbDbtV-SoC4kPvTOvlPR1sm6s6z_MSAl92iaY0PSdT5ouccZRSsaFVdINto27xG-azp-yg9q0ns5-1xP2cjt7ns7TxcPd_fRmkVrOeUgrJZbV0lhlK6uUjTBTleUKMxJiKeqcWyBOFVBZoiQUXFleWEKFsshrmZ-wy-25K9PqjWvWxn3p3jR6frPQPwwQleSCjxjdi627cf37QD7odeMtta3pqB-8RqkEClWC_F8VCksoucqiKrZq_CEfC9S7ZyDonzL6MZZ5onERy0TA9bZMHDz_vWOo1rTcjf2lyL8B8rCMbg</recordid><startdate>20150501</startdate><enddate>20150501</enddate><creator>Wolfowicz, Gary</creator><creator>Maier-Flaig, Hannes</creator><creator>Marino, Robert</creator><creator>Ferrier, Alban</creator><creator>Vezin, Hervé</creator><creator>Morton, John J L</creator><creator>Goldner, Philippe</creator><general>American Physical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-7282-2703</orcidid><orcidid>https://orcid.org/0000-0002-4638-4754</orcidid></search><sort><creationdate>20150501</creationdate><title>Coherent storage of microwave excitations in rare-earth nuclear spins</title><author>Wolfowicz, Gary ; Maier-Flaig, Hannes ; Marino, Robert ; Ferrier, Alban ; Vezin, Hervé ; Morton, John J L ; Goldner, Philippe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c444t-b86dbdac8cbc88cc4428bc4812e66d6f34c0e4eb0e9917e1648c45ce181753f73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Chemical Sciences</topic><topic>Coherence</topic><topic>Electron spin</topic><topic>Excitation</topic><topic>Microwaves</topic><topic>Nuclear spin</topic><topic>or physical chemistry</topic><topic>Qubits (quantum computing)</topic><topic>Rare earth metals</topic><topic>Retrieval</topic><topic>Theoretical and</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wolfowicz, Gary</creatorcontrib><creatorcontrib>Maier-Flaig, Hannes</creatorcontrib><creatorcontrib>Marino, Robert</creatorcontrib><creatorcontrib>Ferrier, Alban</creatorcontrib><creatorcontrib>Vezin, Hervé</creatorcontrib><creatorcontrib>Morton, John J L</creatorcontrib><creatorcontrib>Goldner, Philippe</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wolfowicz, Gary</au><au>Maier-Flaig, Hannes</au><au>Marino, Robert</au><au>Ferrier, Alban</au><au>Vezin, Hervé</au><au>Morton, John J L</au><au>Goldner, Philippe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coherent storage of microwave excitations in rare-earth nuclear spins</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2015-05-01</date><risdate>2015</risdate><volume>114</volume><issue>17</issue><spage>170503</spage><epage>170503</epage><pages>170503-170503</pages><artnum>170503</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>Interfacing between various elements of a computer--from memory to processors to long range communication--will be as critical for quantum computers as it is for classical computers today. 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subjects | Chemical Sciences Coherence Electron spin Excitation Microwaves Nuclear spin or physical chemistry Qubits (quantum computing) Rare earth metals Retrieval Theoretical and |
title | Coherent storage of microwave excitations in rare-earth nuclear spins |
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