Adiabatic condition for coherent atom–heteronuclear-molecule conversion

Jing, Hui; Zheng, Fanong; Jiang, Yuzhu; Geng, Zhe

doi:10.1103/physreva.78.033617

Cited by 16 publications

(19 citation statements)

References 61 publications

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“…The 0 mode being a doublet distinguishes the heteronuclear model [30] from its homonuclear counterpart which only supports a single 0 mode [29]. In general, due to the ground intermediate states being unstable, the two modes here are both unstable, in contrast to the dark state in a typical three-level system, which is a stable superposition, completely isolated from other unstable states.…”

Section: Adiabatic Conditionmentioning

confidence: 81%

Achieving ground-state polar molecular condensates by chainwise atom-molecule adiabatic passage

2010

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We generalize the idea of chainwise stimulated Raman adiabatic passage (STIRAP) [Kuznetsova et al. Phys. Rev. A 78, 021402(R) (2008)] to a photoassociation-based chainwise atom-molecule system, with the goal of directly converting two-species atomic Bose-Einstein condensates (BEC) into a ground polar molecular BEC. We pay particular attention to the intermediate Raman laser fields, a control knob inaccessible to the usual three-level model. We find that an appropriate exploration of both the intermediate laser fields and the stability property of the atom-molecule STIRAP can greatly reduce the power demand on the photoassociation laser, a key concern for STIRAPs starting from free atoms due to the small Franck-Condon factor in the free-bound transition.

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Section: Adiabatic Conditionmentioning

confidence: 81%

Achieving ground-state polar molecular condensates by chainwise atom-molecule adiabatic passage

2010

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“…Then, by taking account of the collisions [90], Ling et al confirmed the validity of this method by achieving again the similar adiabatic condition. This Section will be devoted to introducing the nonlinear adiabatic condition and to compare the difference of atom-dimer and atom-trimer conversion [89].…”

Section: ḣ|mentioning

confidence: 99%

“…In view of their novel anisotropic properties [82,83], quantum control of triatomic molecule is of particular interest as it may lead to intriguing developments such as the realization of a triatomic molecular matter-wave amplifier [84] or quantum computing with a trimer lattice [58,85,86]. In Section 3, we will introduce the concept of atom-molecule dark state [87][88][89][90][91][92] and its applications in creating molecular trimer A 2 B. An important result is that the creation of heteronuclear trimers can be significantly enhanced by constructive interference of two reaction channels leading to their formation.…”

Section: Introductionmentioning

confidence: 99%

“…Blue solid line denotes the reference line of the linear system; green dashed (solid) line denotes another reference of the homonuclear dimers 2|ψg| 2 (heteronuclear trimers (I) 3|ψg| 2 ); red dashed (solid) line denotes the heteronuclear dimers 2|ψg| 2 (trimers) (II) 3|ψg| 2 ), respectively. Reproduced from Ref [89],. Copyright c 2008 The American Physical Society.…”

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confidence: 98%

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Quantum superchemistry of de Broglie waves: New wonderland at ultracold temperature

2010

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The experimental realization of atomic Bose-Einstein condensation at ultracold temperature has led to rapid advances in creating and manipulating cold molecules, and which has given birth to a new research field of quantum matter-wave superchemistry. Contrary to the classical Arrhenius law, the tunnelingdominated ultracold reactions can be realized through the highly-controlled magneto-optical technique. Novel quantum effects have been identified in these cold reactions, such as the super-selectivity rule in dissociating triatomic molecules, and the quantum size (vessel-shape) effect. In this review, we focus on a variety of new achievements in this fascinating matter-wave wonderland, including the quantum finitenumber effect and double-slit interference in assembling cold molecules, the quantum noise in triggering collective abstraction reaction, and the magnetic phase transition in a laser-catalyzed quantum spin-mixing gas. The practical applications of matter-wave superchemistry are also introduced, such as the optical information storage via quantum photo-association, and the laser-enhanced creation of spinor or even chiral molecules.

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“…To derive the adiabatic parameter for the quasi-CPT state, we adopt a standard linearized approach as in [47,48] by adding a small fluctuation δψ i to the instantaneous steady-state solution φ i , (12) where…”

Section: Adiabatic Theoremmentioning

confidence: 99%

Efficient production of polar molecular Bose–Einstein condensates via an all-optical R-type atom–molecule adiabatic passage

Qian¹,

Zhou²,

Zhang³

et al. 2010

New J. Phys.

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We propose a scheme of "R-type" photoassociative adiabatic passage (PAP) to create polar molecular condensates from two different species of ultracold atoms. Due to the presence of a quasi-coherent population trapping state in the scheme, it is possible to associate atoms into molecules with a low-power photoassociation (PA) laser. One remarkable advantage of our scheme is that a tunable atom-molecule coupling strength can be achieved by using a time-dependent PA field, which exhibits larger flexibility than using a tunable magnetic field. In addition, our results show that the PA intensity required in the "R-type" PAP could be greatly reduced compared to that in a conventional "Λ-type" one.

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Adiabatic condition for coherent atom–heteronuclear-molecule conversion

Cited by 16 publications

References 61 publications

Achieving ground-state polar molecular condensates by chainwise atom-molecule adiabatic passage

Achieving ground-state polar molecular condensates by chainwise atom-molecule adiabatic passage

Quantum superchemistry of de Broglie waves: New wonderland at ultracold temperature

Efficient production of polar molecular Bose–Einstein condensates via an all-optical R-type atom–molecule adiabatic passage

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