Dephasing of a superconducting qubit induced by photon noise
We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID based oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environmen...
Gespeichert in:
| Veröffentlicht in: | Physical review letters 2005-12, Vol.95 (25), p.257002.1-257002.4, Article 257002 |
|---|---|
| Hauptverfasser: | , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 257002.4 |
|---|---|
| container_issue | 25 |
| container_start_page | 257002.1 |
| container_title | Physical review letters |
| container_volume | 95 |
| creator | BERTET, P CHIORESCU, I BURKARD, G SEMBA, K HARMANS, C. J. P. M DIVINCENZO, D. P MOOIJ, J. E |
| description | We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID based oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environment on the qubit coherence. We can quantitatively account for our data with a simple model in which thermal fluctuations of the photon number in the oscillator are the limiting factor. In particular, we observe a strong reduction of the dephasing rate whenever the coupling is tuned to zero. At the optimal point we find a large spin-echo decay time of . |
| doi_str_mv | 10.1103/physrevlett.95.257002 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_69053999</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>69053999</sourcerecordid><originalsourceid>FETCH-LOGICAL-c502t-d3be619dc79756c253e1736dbe7320b5cf0974088e911e9581229313c3fdf4ae3</originalsourceid><addsrcrecordid>eNpFkN9LwzAQx4Mobk7_BKUv-tZ5SZqmAV9k_oSBIvoc0vTqKl3TNe1g_70ZK-zpuOPzveM-hFxTmFMK_L5d7XyH2xr7fq7EnAkJwE7IlIJUsaQ0OSVTAE5jBSAn5ML7PwCgLM3OyYSmPEsSlU7JwxO2K-Or5jdyZWQiP7TYWdcUg-33w82QV31U7XssonwXtSvXuyZqXOXxkpyVpvZ4NdYZ-Xl5_l68xcuP1_fF4zK2AlgfFzzHlKrCSiVFapngSCVPixwlZ5ALW4KSCWQZKkpRiYwypjjllpdFmRjkM3J32Nt2bjOg7_W68hbr2jToBq9TBYIrpQIoDqDtnA96St121dp0O01B77Xpz6DtC7fLoE0roQ_aQu5mPDDkayyOqdFTAG5HwHhr6rIzja38kZNJ-DTo_geYN3hv</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>69053999</pqid></control><display><type>article</type><title>Dephasing of a superconducting qubit induced by photon noise</title><source>American Physical Society Journals</source><creator>BERTET, P ; CHIORESCU, I ; BURKARD, G ; SEMBA, K ; HARMANS, C. J. P. M ; DIVINCENZO, D. P ; MOOIJ, J. E</creator><creatorcontrib>BERTET, P ; CHIORESCU, I ; BURKARD, G ; SEMBA, K ; HARMANS, C. J. P. M ; DIVINCENZO, D. P ; MOOIJ, J. E</creatorcontrib><description>We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID based oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environment on the qubit coherence. We can quantitatively account for our data with a simple model in which thermal fluctuations of the photon number in the oscillator are the limiting factor. In particular, we observe a strong reduction of the dephasing rate whenever the coupling is tuned to zero. At the optimal point we find a large spin-echo decay time of .</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/physrevlett.95.257002</identifier><identifier>PMID: 16384496</identifier><identifier>CODEN: PRLTAO</identifier><language>eng</language><publisher>Ridge, NY: American Physical Society</publisher><subject>Applied sciences ; Classical and quantum physics: mechanics and fields ; Electronics ; Exact sciences and technology ; Physics ; Quantum computation ; Quantum information ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; Superconducting devices</subject><ispartof>Physical review letters, 2005-12, Vol.95 (25), p.257002.1-257002.4, Article 257002</ispartof><rights>2006 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c502t-d3be619dc79756c253e1736dbe7320b5cf0974088e911e9581229313c3fdf4ae3</citedby><cites>FETCH-LOGICAL-c502t-d3be619dc79756c253e1736dbe7320b5cf0974088e911e9581229313c3fdf4ae3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,2863,2864,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=17450200$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16384496$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>BERTET, P</creatorcontrib><creatorcontrib>CHIORESCU, I</creatorcontrib><creatorcontrib>BURKARD, G</creatorcontrib><creatorcontrib>SEMBA, K</creatorcontrib><creatorcontrib>HARMANS, C. J. P. M</creatorcontrib><creatorcontrib>DIVINCENZO, D. P</creatorcontrib><creatorcontrib>MOOIJ, J. E</creatorcontrib><title>Dephasing of a superconducting qubit induced by photon noise</title><title>Physical review letters</title><addtitle>Phys Rev Lett</addtitle><description>We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID based oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environment on the qubit coherence. We can quantitatively account for our data with a simple model in which thermal fluctuations of the photon number in the oscillator are the limiting factor. In particular, we observe a strong reduction of the dephasing rate whenever the coupling is tuned to zero. At the optimal point we find a large spin-echo decay time of .</description><subject>Applied sciences</subject><subject>Classical and quantum physics: mechanics and fields</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Physics</subject><subject>Quantum computation</subject><subject>Quantum information</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Superconducting devices</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNpFkN9LwzAQx4Mobk7_BKUv-tZ5SZqmAV9k_oSBIvoc0vTqKl3TNe1g_70ZK-zpuOPzveM-hFxTmFMK_L5d7XyH2xr7fq7EnAkJwE7IlIJUsaQ0OSVTAE5jBSAn5ML7PwCgLM3OyYSmPEsSlU7JwxO2K-Or5jdyZWQiP7TYWdcUg-33w82QV31U7XssonwXtSvXuyZqXOXxkpyVpvZ4NdYZ-Xl5_l68xcuP1_fF4zK2AlgfFzzHlKrCSiVFapngSCVPixwlZ5ALW4KSCWQZKkpRiYwypjjllpdFmRjkM3J32Nt2bjOg7_W68hbr2jToBq9TBYIrpQIoDqDtnA96St121dp0O01B77Xpz6DtC7fLoE0roQ_aQu5mPDDkayyOqdFTAG5HwHhr6rIzja38kZNJ-DTo_geYN3hv</recordid><startdate>20051216</startdate><enddate>20051216</enddate><creator>BERTET, P</creator><creator>CHIORESCU, I</creator><creator>BURKARD, G</creator><creator>SEMBA, K</creator><creator>HARMANS, C. J. P. M</creator><creator>DIVINCENZO, D. P</creator><creator>MOOIJ, J. E</creator><general>American Physical Society</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20051216</creationdate><title>Dephasing of a superconducting qubit induced by photon noise</title><author>BERTET, P ; CHIORESCU, I ; BURKARD, G ; SEMBA, K ; HARMANS, C. J. P. M ; DIVINCENZO, D. P ; MOOIJ, J. E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c502t-d3be619dc79756c253e1736dbe7320b5cf0974088e911e9581229313c3fdf4ae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Applied sciences</topic><topic>Classical and quantum physics: mechanics and fields</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Physics</topic><topic>Quantum computation</topic><topic>Quantum information</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>Superconducting devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>BERTET, P</creatorcontrib><creatorcontrib>CHIORESCU, I</creatorcontrib><creatorcontrib>BURKARD, G</creatorcontrib><creatorcontrib>SEMBA, K</creatorcontrib><creatorcontrib>HARMANS, C. J. P. M</creatorcontrib><creatorcontrib>DIVINCENZO, D. P</creatorcontrib><creatorcontrib>MOOIJ, J. E</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>BERTET, P</au><au>CHIORESCU, I</au><au>BURKARD, G</au><au>SEMBA, K</au><au>HARMANS, C. J. P. M</au><au>DIVINCENZO, D. P</au><au>MOOIJ, J. E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Dephasing of a superconducting qubit induced by photon noise</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2005-12-16</date><risdate>2005</risdate><volume>95</volume><issue>25</issue><spage>257002.1</spage><epage>257002.4</epage><pages>257002.1-257002.4</pages><artnum>257002</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><coden>PRLTAO</coden><abstract>We have studied the dephasing of a superconducting flux qubit coupled to a dc-SQUID based oscillator. By varying the bias conditions of both circuits we were able to tune their effective coupling strength. This allowed us to measure the effect of such a controllable and well-characterized environment on the qubit coherence. We can quantitatively account for our data with a simple model in which thermal fluctuations of the photon number in the oscillator are the limiting factor. In particular, we observe a strong reduction of the dephasing rate whenever the coupling is tuned to zero. At the optimal point we find a large spin-echo decay time of .</abstract><cop>Ridge, NY</cop><pub>American Physical Society</pub><pmid>16384496</pmid><doi>10.1103/physrevlett.95.257002</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-9007 |
| ispartof | Physical review letters, 2005-12, Vol.95 (25), p.257002.1-257002.4, Article 257002 |
| issn | 0031-9007 1079-7114 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_69053999 |
| source | American Physical Society Journals |
| subjects | Applied sciences Classical and quantum physics: mechanics and fields Electronics Exact sciences and technology Physics Quantum computation Quantum information Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Superconducting devices |
| title | Dephasing of a superconducting qubit induced by photon noise |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-11T06%3A38%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Dephasing%20of%20a%20superconducting%20qubit%20induced%20by%20photon%20noise&rft.jtitle=Physical%20review%20letters&rft.au=BERTET,%20P&rft.date=2005-12-16&rft.volume=95&rft.issue=25&rft.spage=257002.1&rft.epage=257002.4&rft.pages=257002.1-257002.4&rft.artnum=257002&rft.issn=0031-9007&rft.eissn=1079-7114&rft.coden=PRLTAO&rft_id=info:doi/10.1103/physrevlett.95.257002&rft_dat=%3Cproquest_cross%3E69053999%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=69053999&rft_id=info:pmid/16384496&rfr_iscdi=true |