Coherent quantum phase slip in two-component bosonic atomtronic circuits
Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap. After imprinting different vortex states, i.e. states with quantized circulation, o...
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| Veröffentlicht in: | New journal of physics 2015-12, Vol.18 (1), p.15003 |
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| creator | Gallemí, A Mateo, A Muñoz Mayol, R Guilleumas, M |
| description | Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap. After imprinting different vortex states, i.e. states with quantized circulation, on each component, we demonstrate that during the whole dynamics the system remains in a linear superposition of two current states in spite of the nonlinearity, and can be mapped onto a linear Josephson problem. We propose this system as a good candidate for the realization of a Mooij-Harmans qubit and remark its feasibility for implementation in current experiments with 87Rb, since we have used values for the physical parameters currently available in laboratories. |
| doi_str_mv | 10.1088/1367-2630/18/1/015003 |
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Phys</addtitle><description>Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap. After imprinting different vortex states, i.e. states with quantized circulation, on each component, we demonstrate that during the whole dynamics the system remains in a linear superposition of two current states in spite of the nonlinearity, and can be mapped onto a linear Josephson problem. 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Phys</addtitle><date>2015-12-23</date><risdate>2015</risdate><volume>18</volume><issue>1</issue><spage>15003</spage><pages>15003-</pages><issn>1367-2630</issn><eissn>1367-2630</eissn><coden>NJOPFM</coden><abstract>Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap. After imprinting different vortex states, i.e. states with quantized circulation, on each component, we demonstrate that during the whole dynamics the system remains in a linear superposition of two current states in spite of the nonlinearity, and can be mapped onto a linear Josephson problem. 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| subjects | 03.75.Hh Coherence coherent coupling flux qubit Física phase slip Physical properties Physics Qubits (quantum computing) Slip spinor condensate Superconductivitat Superconductivity toroidal geometry |
| title | Coherent quantum phase slip in two-component bosonic atomtronic circuits |
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