Precision test of statistical dynamics with state-to-state ultracold chemistry

Liu, Yu; Hu, Ming-Guang; Nichols, Matthew; Yang, Dongzheng; Xie, Daiqian; Guo, Hua; Ni, Kang-Kuen

doi:10.1038/s41586-021-03459-6

Cited by 83 publications

(95 citation statements)

References 57 publications

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“…Liu et al tested the statistical dynamics of the reaction products in the bimolecular reaction KRb + KRb → Rb 2 + K 2 . 101 They improved the energy resolution and could resolve the rovibrational states of the Rb 2 and K 2 products. Furthermore, they developed a coincidence detection technique by which the products from the same reaction events could be recorded.…”

Section: Ultracold Reactionsmentioning

confidence: 99%

Quantum control of reactions and collisions at ultralow temperatures

Zhao

Pan

2022

Chem. Soc. Rev.

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Section: Ultracold Reactionsmentioning

confidence: 99%

Quantum control of reactions and collisions at ultralow temperatures

Zhao

Pan

2022

Chem. Soc. Rev.

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“…In recent years, ultracold polar molecules have been a subject of intense experimental and theoretical studies. Due to their rich internal structure and comparatively strong intermolecular interactions, they have been suggested as great candidates for quantum simulation [1][2][3] and computation [4][5][6][7][8][9], precision measurements of fundamental constants [10,11], as well as controlled chemistry [12][13][14]. The complex internal structure of molecules offers broad prospects for experimental control with external fields [15][16][17][18][19][20][21], but also leads to problems with cooling the system to reach quantum degeneracy.…”

Section: Introductionmentioning

confidence: 99%

Controlling the dynamics of ultracold polar molecules in optical tweezers

et al. 2021

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Ultracold molecules trapped in optical tweezers show great promise for the implementation of quantum technologies and precision measurements. We study a prototypical scenario where two interacting polar molecules placed in separate traps are controlled using an external electric field. This, for instance, enables a quantum computing scheme in which the rotational structure is used to encode the qubit states. We estimate the typical operation timescales needed for state engineering to be in the range of few microseconds. We further underline the important role of the spatial structure of the two-body states, with the potential for significant gate speedup employing trap-induced resonances.

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“…Consequently, this platform has wide-ranging applications, including exploring new phases of matter and nonequilibrium behavior [25][26][27][28][29][30][31][32][33][34][35] (for reviews, see Refs. [1,2,[36][37][38][39]), enabling quantum computation [40][41][42][43][44][45], performing precision measurements, such as measuring the electron electric dipole moment [46][47][48][49][50], and studying chemical reactions in the quantum regime [51][52][53][54][55][56][57][58][59][60].…”

Section: Introductionmentioning

confidence: 99%

Complex collisions of ultracold molecules: A toy model

et al. 2021

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We introduce a model to study the collisions of two ultracold diatomic molecules in one dimension interacting via pairwise potentials. We present results for this system and argue that it offers lessons for real molecular collisions in three dimensions. We analyze the distribution of the adiabatic potentials in the hyperspherical coordinate representation as well as the distribution of near-threshold four-body bound states, systematically studying the effects of molecular properties, such as interaction strength, interaction range, and atomic mass. It is found that the adiabatic potential's nearest-neighbor energy level distribution transitions from significant level repulsion characteristic of chaos (Brody distribution) to nonchaotic (Poisson distribution) as the two molecules are separated. For the near-threshold four-atom bound states, the case where all atoms have equal masses shows a Poissonian spacing distribution, while the unequal-mass system exhibits significant level repulsion characterized by a nonzero Brody parameter. We derive a semiclassical formula for the density of states and extract from it simple scaling laws with potential depth and range. We find good agreement between the semiclassical predictions for the density of states and the full quantum mechanical calculations.

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Precision test of statistical dynamics with state-to-state ultracold chemistry

Cited by 83 publications

References 57 publications

Quantum control of reactions and collisions at ultralow temperatures

Quantum control of reactions and collisions at ultralow temperatures

Controlling the dynamics of ultracold polar molecules in optical tweezers

Complex collisions of ultracold molecules: A toy model

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