Observation of the Bloch-Siegert shift in a qubit-oscillator system in the ultrastrong coupling regime
We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a superconducting qubit, which clearly shows that our system operates in the ultrastrong coupling regime. The large mutual kinetic inductance provides a coupling energy of ≈ 0.82 GHz, requiring the addition of co...
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| Veröffentlicht in: | Physical review letters 2010-12, Vol.105 (23), p.237001-237001, Article 237001 |
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| container_end_page | 237001 |
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| container_issue | 23 |
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| container_title | Physical review letters |
| container_volume | 105 |
| creator | Forn-Díaz, P Lisenfeld, J Marcos, D García-Ripoll, J J Solano, E Harmans, C J P M Mooij, J E |
| description | We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a superconducting qubit, which clearly shows that our system operates in the ultrastrong coupling regime. The large mutual kinetic inductance provides a coupling energy of ≈ 0.82 GHz, requiring the addition of counter-rotating-wave terms in the description of the Jaynes-Cummings model. We find a 50 MHz Bloch-Siegert shift when the qubit is in its symmetry point, fully consistent with our analytical model. |
| doi_str_mv | 10.1103/physrevlett.105.237001 |
| format | Article |
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The large mutual kinetic inductance provides a coupling energy of ≈ 0.82 GHz, requiring the addition of counter-rotating-wave terms in the description of the Jaynes-Cummings model. We find a 50 MHz Bloch-Siegert shift when the qubit is in its symmetry point, fully consistent with our analytical model.</description><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>COUPLING</subject><subject>ELECTRICAL PROPERTIES</subject><subject>ELECTRONIC EQUIPMENT</subject><subject>ENERGY LEVELS</subject><subject>FREQUENCY RANGE</subject><subject>GHZ RANGE</subject><subject>INDUCTANCE</subject><subject>INFORMATION</subject><subject>MHZ RANGE</subject><subject>MHZ RANGE 01-100</subject><subject>OSCILLATORS</subject><subject>PHYSICAL PROPERTIES</subject><subject>QUANTUM INFORMATION</subject><subject>QUBITS</subject><subject>RESONATORS</subject><subject>SYMMETRY</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNo9kU1v3CAQhlHVqtkm-QsRUg89eTuAMfjYRk1aaaVU_TgjjMdrKttsAK-0_76sNu2JEfO88_UScsdgyxiIj4fxlCIeJ8x5y0BuuVAA7BXZMFBtpRirX5MNgGBVC6CuyLuU_kAheKPfkivOuGB122zI8NQljEebfVhoGGgekX6eghurnx73GDNNox8y9Qu19HntfK5Ccn6abA6RplPKOJ-TZ9065WhTjmHZUxfWw-RLEHHvZ7whbwY7Jbx9ea_J74cvv-6_Vrunx2_3n3aVkyBz1fetVR2qbmAKUbaDbmTHba0Y545DX0MHrWa6103rmHC91uA4auusGgRX4pq8v9QNKXtTBs3oRheWBV02nElZ15IX6sOFOsTwvGLKZvbJYVlqwbAmo2sQspZNW8jmQroYUjn4YA7RzzaeDANzNsJ8L0b8wOOuGFH-pLkYUYR3Ly3Wbsb-v-zf5cVfAlWImg</recordid><startdate>20101203</startdate><enddate>20101203</enddate><creator>Forn-Díaz, P</creator><creator>Lisenfeld, J</creator><creator>Marcos, D</creator><creator>García-Ripoll, J J</creator><creator>Solano, E</creator><creator>Harmans, C J P M</creator><creator>Mooij, J E</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>20101203</creationdate><title>Observation of the Bloch-Siegert shift in a qubit-oscillator system in the ultrastrong coupling regime</title><author>Forn-Díaz, P ; Lisenfeld, J ; Marcos, D ; García-Ripoll, J J ; Solano, E ; Harmans, C J P M ; Mooij, J E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c505t-dd9a7be7bf17ee59f865b2a47122c20d40b09818d869c13cd880c2e8aca7f3273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>COUPLING</topic><topic>ELECTRICAL PROPERTIES</topic><topic>ELECTRONIC EQUIPMENT</topic><topic>ENERGY LEVELS</topic><topic>FREQUENCY RANGE</topic><topic>GHZ RANGE</topic><topic>INDUCTANCE</topic><topic>INFORMATION</topic><topic>MHZ RANGE</topic><topic>MHZ RANGE 01-100</topic><topic>OSCILLATORS</topic><topic>PHYSICAL PROPERTIES</topic><topic>QUANTUM INFORMATION</topic><topic>QUBITS</topic><topic>RESONATORS</topic><topic>SYMMETRY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Forn-Díaz, P</creatorcontrib><creatorcontrib>Lisenfeld, J</creatorcontrib><creatorcontrib>Marcos, D</creatorcontrib><creatorcontrib>García-Ripoll, J J</creatorcontrib><creatorcontrib>Solano, E</creatorcontrib><creatorcontrib>Harmans, C J P M</creatorcontrib><creatorcontrib>Mooij, J E</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Forn-Díaz, P</au><au>Lisenfeld, J</au><au>Marcos, D</au><au>García-Ripoll, J J</au><au>Solano, E</au><au>Harmans, C J P M</au><au>Mooij, J E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of the Bloch-Siegert shift in a qubit-oscillator system in the ultrastrong coupling regime</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2010-12-03</date><risdate>2010</risdate><volume>105</volume><issue>23</issue><spage>237001</spage><epage>237001</epage><pages>237001-237001</pages><artnum>237001</artnum><issn>0031-9007</issn><eissn>1079-7114</eissn><abstract>We measure the dispersive energy-level shift of an LC resonator magnetically coupled to a superconducting qubit, which clearly shows that our system operates in the ultrastrong coupling regime. 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| source | American Physical Society Journals |
| subjects | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY COUPLING ELECTRICAL PROPERTIES ELECTRONIC EQUIPMENT ENERGY LEVELS FREQUENCY RANGE GHZ RANGE INDUCTANCE INFORMATION MHZ RANGE MHZ RANGE 01-100 OSCILLATORS PHYSICAL PROPERTIES QUANTUM INFORMATION QUBITS RESONATORS SYMMETRY |
| title | Observation of the Bloch-Siegert shift in a qubit-oscillator system in the ultrastrong coupling regime |
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