Optical control of magnetic Feshbach resonances in Bose gases

Liu, Yong; Li, Jian; Wang, Gao‐Ren; Cong, Shu‐Lin

doi:10.1016/j.physleta.2013.10.028

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…where E 1 and E 2 are the field amplitudes, and ω 1 and ω 2 are the center frequencies of the fundamental fields. The Hamiltonian is written as [25] Ĥ…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…The improved quantum interference method was applied to the optical control with a wide tunability of scattering parameters. [24] In our previous work, [25] we theoretically demonstrated that a dark state formed by the coherent superposition of two ground-states of a molecule induced by two optical lasers can modulate the MFR and suppress the inelastic loss. In the present work, we propose an alternative scheme for controlling the scattering length with a two-color optical field.…”

Section: Introductionmentioning

confidence: 99%

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Two-color laser modulation of magnetic Feshbach resonances

Li¹,

Liu²,

Huang³

et al. 2015

Chinese Phys. B

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We investigate the two-color laser modulation of the magnetically induced Feshbach resonance. The two-color laser is nearly resonant with an optical bound-to-bound transition at the resonance position. The analytical formula of scattering length is obtained by solving the Heisenberg equation. The scattering length can be modified by changing the Rabi frequencies or optical field frequency. By choosing the suitable optical parameters, the two-body loss coefficient K2 can be greatly reduced compared to the usual single optical scheme.

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“…where E 1 and E 2 are the field amplitudes, and ω 1 and ω 2 are the center frequencies of the fundamental fields. The Hamiltonian is written as [25] Ĥ…”

Section: Theoretical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-color laser modulation of magnetic Feshbach resonances

Li¹,

Liu²,

Huang³

et al. 2015

Chinese Phys. B

Self Cite

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show abstract

“…In the case where magnetically tunable resonances are absent, an alternative method for control of Feshbach resonance is the optical method [5] (optical Feshbach resonance). Optical control of Feshbach resonances by means of quantum interference was proposed in work [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Formation and stimulated photodissociation of metastable molecules with emission of photon at the collision of two atoms in a laser radiation field

Gazazyan¹,

Gazazyan²

2017

Laser Phys.

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Abstract. The Formation of metastable molecules (Feshbach resonances) at the collision of two atoms and subsequent stimulated transition to a lower unbound electronic molecular state, with emission of a photon of the laser radiation has been investigated. This can develop, in particular, for Rb 2 molecules due to resonance scattering of two Rb atoms. The considered process is a basis for the creation of excimer lasers. Expressions for the cross sections of elastic and inelastic resonance scattering and the intensity of the stimulated emission of the photons have been obtained.

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The modulating action of electric field on magnetically tuned Feshbach resonance

Wang

et al. 2019

The Journal of Chemical Physics

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We investigate the modulating action of an external electric field on the magnetically tuned Feshbach resonance in ultracold heteronuclear atomic collision by using the multichannel quantum-defect theory (MQDT). The coupling between different partial wave states induced by an electric field is included into the singlet and triplet quantum defect matrices y(0) and y(1). By taking the truncated −C6/R6 − C8/R8 − C10/R10 potential as the reference potential, the threshold behaviors of four quantum-defect parameters for the lowest three partial waves are described. The results calculated by using the MQDT agree with those calculated using the coupled channel method. Moreover, we present an analytical expression used for describing the variation of the position and width of the magnetically tuned Feshbach resonance modulated by an electric field.

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Optical control of magnetic Feshbach resonances in Bose gases

Cited by 5 publications

References 32 publications

Two-color laser modulation of magnetic Feshbach resonances

Two-color laser modulation of magnetic Feshbach resonances

Formation and stimulated photodissociation of metastable molecules with emission of photon at the collision of two atoms in a laser radiation field

The modulating action of electric field on magnetically tuned Feshbach resonance

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