### Abstract

Since the early days of ultracold atomic physics, the phenomena of matter wave collapse, i.e. unrestricted contraction of the Bose-Einstein condensate (BEC) with attractive interatomic interactions, has been studied both experimentally [1] and theoretically [2]. In particular, it has been shown that a dynamically stable BEC can exist both in 3D and 2D (strongly anisotropic, pancake) harmonic traps, as long as the number of particles in the condensate is below a certain critical value. Naturally, the problem of collapse control and possible suppression in such systems is of a great fundamental and practical importance. In particular, it was suggested that for anisotropic (i.e. elliptic) two-dimensional condensate clouds carrying angular momentum the collapse can be completely arrested [3]. Similar problem was recently analyzed in the context of nonlinear optics, where it was shown [4] that imprinting twisted phase front and thereby transferring an orbital angular momentum (OAM) onto light beams with elliptic cross-section allows to suppress their collapse. Although the rotating BEC with attractive interaction was studied in context of vortex formation, the fundamental role of OAM in the collapse dynamics of trapped BECs remains an open problem.

Original language | English |
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Title of host publication | 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 |

DOIs | |

Publication status | Published - 2011 |

Externally published | Yes |

Event | 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 - Munich, Germany Duration: May 22 2011 → May 26 2011 |

### Other

Other | 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011 |
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Country | Germany |

City | Munich |

Period | 5/22/11 → 5/26/11 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering

### Cite this

*2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011*[5943309] https://doi.org/10.1109/CLEOE.2011.5943309

**Collapse suppression in Bose-Einstein condensate clouds with orbital angular momentum.** / Abdullaev, Jasur; Desyatnikov, Anton S.; Ostrovskaya, Elena A.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011.*, 5943309, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011, Munich, Germany, 5/22/11. https://doi.org/10.1109/CLEOE.2011.5943309

}

TY - GEN

T1 - Collapse suppression in Bose-Einstein condensate clouds with orbital angular momentum

AU - Abdullaev, Jasur

AU - Desyatnikov, Anton S.

AU - Ostrovskaya, Elena A.

PY - 2011

Y1 - 2011

N2 - Since the early days of ultracold atomic physics, the phenomena of matter wave collapse, i.e. unrestricted contraction of the Bose-Einstein condensate (BEC) with attractive interatomic interactions, has been studied both experimentally [1] and theoretically [2]. In particular, it has been shown that a dynamically stable BEC can exist both in 3D and 2D (strongly anisotropic, pancake) harmonic traps, as long as the number of particles in the condensate is below a certain critical value. Naturally, the problem of collapse control and possible suppression in such systems is of a great fundamental and practical importance. In particular, it was suggested that for anisotropic (i.e. elliptic) two-dimensional condensate clouds carrying angular momentum the collapse can be completely arrested [3]. Similar problem was recently analyzed in the context of nonlinear optics, where it was shown [4] that imprinting twisted phase front and thereby transferring an orbital angular momentum (OAM) onto light beams with elliptic cross-section allows to suppress their collapse. Although the rotating BEC with attractive interaction was studied in context of vortex formation, the fundamental role of OAM in the collapse dynamics of trapped BECs remains an open problem.

AB - Since the early days of ultracold atomic physics, the phenomena of matter wave collapse, i.e. unrestricted contraction of the Bose-Einstein condensate (BEC) with attractive interatomic interactions, has been studied both experimentally [1] and theoretically [2]. In particular, it has been shown that a dynamically stable BEC can exist both in 3D and 2D (strongly anisotropic, pancake) harmonic traps, as long as the number of particles in the condensate is below a certain critical value. Naturally, the problem of collapse control and possible suppression in such systems is of a great fundamental and practical importance. In particular, it was suggested that for anisotropic (i.e. elliptic) two-dimensional condensate clouds carrying angular momentum the collapse can be completely arrested [3]. Similar problem was recently analyzed in the context of nonlinear optics, where it was shown [4] that imprinting twisted phase front and thereby transferring an orbital angular momentum (OAM) onto light beams with elliptic cross-section allows to suppress their collapse. Although the rotating BEC with attractive interaction was studied in context of vortex formation, the fundamental role of OAM in the collapse dynamics of trapped BECs remains an open problem.

UR - http://www.scopus.com/inward/record.url?scp=80052278705&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052278705&partnerID=8YFLogxK

U2 - 10.1109/CLEOE.2011.5943309

DO - 10.1109/CLEOE.2011.5943309

M3 - Conference contribution

AN - SCOPUS:80052278705

SN - 9781457705335

BT - 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011

ER -