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Meta-stable 1-D gases of polar molecules with attractive dipole forces

Robin C ot 'e

Bulletin of the American Physical SocietyMar 22, 20110 citations

Controllable Binding of Polar Molecules and Metastability of One-Dimensional Gases with Attractive Dipole Forces

Jason N. Byrd, John A. Jr. Montgomery, Robin Côté

We explore one-dimensional samples of ultracold polar molecules with attractive dipole-dipole interactions and show the existence of a repulsive barrier caused by a strong quadrupole interaction between molecules. This barrier can stabilize a gas of ultracold KRb molecules and even lead to long-range wells supporting bound states between the molecules. The properties of these wells can be controlled by external electric fields, allowing the formation of long polymerlike chains of KRb and studies of quantum phase transitions by varying the effective interaction between molecules. We discuss the generalization of those results to other systems.We explore one-dimensional samples of ultracold polar molecules with attractive dipole-dipole interactions and show the existence of a repulsive barrier caused by a strong quadrupole interaction between molecules. This barrier can stabilize a gas of ultracold KRb molecules and even lead to long-range wells supporting bound states between the molecules. The properties of these wells can be controlled by external electric fields, allowing the formation of long polymerlike chains of KRb and studies of quantum phase transitions by varying the effective interaction between molecules. We discuss the generalization of those results to other systems.

arXiv:1207.2797Physical Review LettersAug 24, 201218 citations

Controllable stability of dipolar gases in 1-D geometry

Robin C ot 'e, John A. Jr. Montgomery, Jason Byrd

Bulletin of the American Physical SocietyMay 28, 20100 citations

Collisional relaxation in shielded dipolar molecular gases

Reuben R. W. Wang, John L. Bohn

We discuss the influence of collisions on the dynamics of an ultracold gas whose constituents interact via dipolar forces. This dynamics is governed by the elastic scattering cross section of the molecules, which is to some extent under the experimentalist's control. We compare side-by-side several different situations, highlighting their similarities and differences. These situations are collisions between: 1) point dipoles; 2) electric-field-shielded polar molecules; and 3) microwave-shielded polar molecules, including the effect of microwave ellipticity.We discuss the influence of collisions on the dynamics of an ultracold gas whose constituents interact via dipolar forces. This dynamics is governed by the elastic scattering cross section of the molecules, which is to some extent under the experimentalist's control. We compare side-by-side several different situations, highlighting their similarities and differences. These situations are collisions between: 1) point dipoles; 2) electric-field-shielded polar molecules; and 3) microwave-shielded polar molecules, including the effect of microwave ellipticity.

arXiv:2510.17020Oct 19, 20250 citations

Resonance effects in a 1D gas of polar molecules

Andrea Simoni, Jean–Michel Launay

Nov 4, 20130 citations

External Electric Fields: A New Tool for Controlling Ultracold Polar Molecules

J.M. Shaw

Ultracold dipolar molecules present many new and novel properties for studying the quantum dynamics of many-body physics. In particular, large electric dipole moments found in polar molecules can be tuned with external electric fields which provide for precise control over dipole-dipole interactions. JILA's second generation ultracold KRb molecule experiment provides new capabilities for applying external electric fields. Generating these fields requires several stable high-voltage sources in order to precisely control the transitions in ultracold dipolar molecules. This thesis will discuss my work towards creating stable high-voltage sources to be used in the second generation KRb apparatus.Ultracold dipolar molecules present many new and novel properties for studying the quantum dynamics of many-body physics. In particular, large electric dipole moments found in polar molecules can be tuned with external electric fields which provide for precise control over dipole-dipole interactions. JILA's second generation ultracold KRb molecule experiment provides new capabilities for applying external electric fields. Generating these fields requires several stable high-voltage sources in order to precisely control the transitions in ultracold dipolar molecules. This thesis will discuss my work towards creating stable high-voltage sources to be used in the second generation KRb apparatus.

Jan 1, 20152 citations

Controllable binding of polar molecules and meta-stable of 1-D dipolar gases with attractive dipole forces

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Controllable binding of polar molecules and meta-stable of 1-D dipolar gases with attractive dipole forces

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