Bose-Einstein Condensation in an electro-pneumatically transformed quadrupole-Ioffe magnetic trap
| Autor: | Sunil Kumar, Sumit Sarkar, Gunjan Verma, Chetan Vishwakarma, Umakant D. Rapol, Noaman |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Quantum Physics Atomic Physics (physics.atom-ph) Condensed Matter::Other Condensation General Physics and Astronomy FOS: Physical sciences law.invention Physics - Atomic Physics Trap (computing) law Electromagnetic coil Phase space Magnetic trap Quadrupole Physics::Atomic Physics Atomic physics Quantum Physics (quant-ph) Bose–Einstein condensate Evaporative cooler |
| Popis: | We report a novel approach for preparing a Bose-Einstein condensate (BEC) of $^{87}$Rb atoms using electro-pneumatically driven transfer of atoms into a Quadrupole-Ioffe magnetic trap (QUIC Trap). More than 5$\times$$10^{8}$ atoms from a Magneto-optical trap are loaded into a spherical quadrupole trap and then these atoms are transferred into an Ioffe trap by moving the Ioffe coil towards the center of the quadrupole coil, thereby, changing the distance between quadrupole trap center and the Ioffe coil. The transfer efficiency is more than 80 \%. This approach is different from a conventional approach of loading the atoms into a QUIC trap wherein the spherical quadrupole trap is transformed into a QUIC trap by changing the currents in the quadrupole and the Ioffe coils. The phase space density is then increased by forced rf evaporative cooling to achieve the Bose-Einstein condensation having more than $10^{5}$ atoms. 5 pages, 5 figures |
| Databáze: | OpenAIRE |
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