Multiplying and detecting propagating microwave photons using inelastic Cooper-pair tunneling
The interaction between propagating microwave fields and Cooper-pair tunneling across a DC voltage-biased Josephson junction can be highly nonlinear. We show theoretically that this nonlinearity can be used to convert an incoming single microwave photon into an outgoing \(n\)-photon Fock state in a...
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| description | The interaction between propagating microwave fields and Cooper-pair tunneling across a DC voltage-biased Josephson junction can be highly nonlinear. We show theoretically that this nonlinearity can be used to convert an incoming single microwave photon into an outgoing \(n\)-photon Fock state in a different mode. In this process, the electrostatic energy released in a Cooper-pair tunneling event is transferred to the outgoing Fock state, providing energy gain. The created multi-photon Fock state is frequency entangled and highly bunched. The conversion can be made reflectionless (impedance-matched) so that all incoming photons are converted to \(n\)-photon states. With realistic parameters multiplication ratios \(n > 2\) can be reached. By two consecutive multiplications, the outgoing Fock-state number can get sufficiently large to accurately discriminate it from vacuum with linear post-amplification and power measurement. Therefore, this amplification scheme can be used as single-photon detector without dead time. |
| doi_str_mv | 10.48550/arxiv.1612.07098 |
| format | Article |
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We show theoretically that this nonlinearity can be used to convert an incoming single microwave photon into an outgoing \(n\)-photon Fock state in a different mode. In this process, the electrostatic energy released in a Cooper-pair tunneling event is transferred to the outgoing Fock state, providing energy gain. The created multi-photon Fock state is frequency entangled and highly bunched. The conversion can be made reflectionless (impedance-matched) so that all incoming photons are converted to \(n\)-photon states. With realistic parameters multiplication ratios \(n > 2\) can be reached. By two consecutive multiplications, the outgoing Fock-state number can get sufficiently large to accurately discriminate it from vacuum with linear post-amplification and power measurement. 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Therefore, this amplification scheme can be used as single-photon detector without dead time.</description><subject>Amplification</subject><subject>Cooper pairs</subject><subject>Impedance matching</subject><subject>Josephson junctions</subject><subject>Multiplication</subject><subject>Nonlinearity</subject><subject>Photons</subject><subject>Physics - Mesoscale and Nanoscale Physics</subject><subject>Physics - Quantum Physics</subject><subject>Physics - Superconductivity</subject><subject>Quantum theory</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotUMtOwzAQtJCQqEo_gBOROKes7dhJjqjiUamIS68o2tROcZXGxnYK_XvcltPOzo5WM0PIHYV5UQkBj-h_zWFOJWVzKKGursiEcU7zqmDshsxC2AEAkyUTgk_I5_vYR-P6oxm2GQ4qUzrqTTxtzluHWzzjvdl4-4MHnbkvG-0QsjGceDPoHkM0m2xhrdM-d2h8Fsch8el-S6477IOe_c8pWb88rxdv-erjdbl4WuUomMxbREprmtxXgIK2QFslC-jaWtEalFSd5kpwrJlMoIBCUVUJLLFVWnSi5FNyf3l7zt44b_boj82pg-bcQVI8XBQp1PeoQ2x2dvRD8tQwKCmHJJL8D0rDYSY</recordid><startdate>20180201</startdate><enddate>20180201</enddate><creator>Leppäkangas, Juha</creator><creator>Marthaler, Michael</creator><creator>Hazra, Dibyendu</creator><creator>Jebari, Salha</creator><creator>Romain, Albert</creator><creator>Blanchet, Florian</creator><creator>Johansson, Göran</creator><creator>Hofheinz, Max</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20180201</creationdate><title>Multiplying and detecting propagating microwave photons using inelastic Cooper-pair tunneling</title><author>Leppäkangas, Juha ; 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We show theoretically that this nonlinearity can be used to convert an incoming single microwave photon into an outgoing \(n\)-photon Fock state in a different mode. In this process, the electrostatic energy released in a Cooper-pair tunneling event is transferred to the outgoing Fock state, providing energy gain. The created multi-photon Fock state is frequency entangled and highly bunched. The conversion can be made reflectionless (impedance-matched) so that all incoming photons are converted to \(n\)-photon states. With realistic parameters multiplication ratios \(n > 2\) can be reached. By two consecutive multiplications, the outgoing Fock-state number can get sufficiently large to accurately discriminate it from vacuum with linear post-amplification and power measurement. 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| subjects | Amplification Cooper pairs Impedance matching Josephson junctions Multiplication Nonlinearity Photons Physics - Mesoscale and Nanoscale Physics Physics - Quantum Physics Physics - Superconductivity Quantum theory |
| title | Multiplying and detecting propagating microwave photons using inelastic Cooper-pair tunneling |
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