Controlling the motion of cold molecules with deep periodic optical potentials

  title={Controlling the motion of cold molecules with deep periodic optical potentials},
  author={Ray Fulton and Alexis I. Bishop and Mikhail N. Shneider and Peter Barker},
  journal={Nature Physics},
The application of optical forces has allowed unprecedented control over the motion of atoms leading to laser cooling and trapping1 and Bose–Einstein condensation2. More recently, the manipulation of cold neutral polar molecules using electrostatic fields has been used to create slow cold molecules in the laboratory frame3. Here, we report on the controlled manipulation of molecules using deep periodic optical lattice potentials (22 K) created by intense optical fields (1011 W cm−2). By using… 

Creating cold stationary molecular gases by optical Stark deceleration

The deceleration of molecules from cold molecular beams using electric and magnetic fields has become an important means for producing stationary, cold dipolar or paramagnetic molecular gases that

Molecular transport in pulsed optical lattices

This paper presents an overview of our recent theoretical and experimental work investigating the application of deep, periodic optical dipole potentials (optical lattices) produced by intense pulsed

Deceleration of molecules by dipole force potential: a numerical simulation

We propose a new method for making ultracold molecules below 300 μK by cooling via the dipole force of an intense infrared (IR) standing wave created in a high finesse cavity. Deceleration can be

Taming molecular beams The motion of neutral molecules in a beam can be manipulated with inhomogeneous electric and magnetic fields

Atomic and molecular beams have played central roles in many experiments in physics and chemistry—from seminal tests of fundamental aspects of quantum mechanics to molecular reaction dynamics—and

Cold atoms and molecules

The ability to cool and trap atoms has revolutionized atomic and ultra-cold physics. Molecular physics is currently undergoing a similar transformation. This thesis aims to research a general cooling

On the transverse confinement of radiatively slowed molecular beams

Radiative forces from near-resonant laser light can be used for cooling and slowing the motion of diatomic molecules. While radiative-force slowing can be efficient in reducing the longitudinal

Generation of a continuous-wave cold molecular beam by using an optical velocity filter

We propose a novel scheme to generate a cw cold molecular beam by optically guided buffer-gas-cooled molecules around an S-shaped integrated fiber bundle. First we calculate the two-color evanescent

Optical Stark deceleration of nitric oxide and benzene molecules using optical lattices

We describe the deceleration of nitric oxide, benzene and xenon atoms in a molecular beam using one-dimensional pulsed optical lattices created by fields with intensities in the 1012 W cm−2 range. We

Novel electrostatic trap for cold polar molecules

We propose a novel scheme in which cold polar molecules are trapped by an electrostatic field generated by the combination of a pair of parallel transparent electrodes (i.e., two infinite transparent

Cold guided beams of polar molecules

Slow molecules are efficiently extracted from a thermal reservoir by exploiting the interaction between polar molecules and the field provided by an electrostatic quadrupole guide. Electrostatic



Electrostatic trapping of ammonia molecules

The slowing of an adiabatically cooled beam of deuterated ammonia molecules by time-varying inhomogeneous electric fields and subsequent loading into an electrostatic trap is described, illustrating that polar molecules can be efficiently cooled and trapped, thus providing an opportunity to study collisions and collective quantum effects in a wide range of ultra-cold molecular systems.

Optical stark decelerator for molecules.

We demonstrate a single stage optical Stark decelerator for neutral molecules which is capable of reducing the translational energy of benzene molecules within a molecular beam by 15% in a single

Decelerating and bunching molecules with pulsed traveling optical lattices (10 pages)

We investigate the deceleration and bunching of cold molecules in a pulsed supersonic jet using a far-off-resonant optical lattice traveling with a constant velocity. Using an analytical treatment,

Magnetic trapping of calcium monohydride molecules at millikelvin temperatures

Recent advances in the magnetic trapping and evaporative cooling of atoms to nanokelvin temperatures have opened important areas of research, such as Bose–Einstein condensation and ultracold atomic

Slowing molecules by optical microlinear deceleration

We study the creation of stationary cold molecules by rapid deceleration of supersonically cooled molecules in a high-intensity pulsed optical lattice. Using the heavy molecule I{sub 2} as an example

Controlling the alignment of neutral molecules by a strong laser field

A strong nonresonant nanosecond laser pulse is used to align neutral iodine molecules. The technique, applicable to both polar and nonpolar molecules, relies on the interaction between the strong

Deflection of Neutral Molecules using the Nonresonant Dipole Force

The ac Stark shift produced by nonresonant radiation creates a potential minimum for a ground state molecule at the position where the laser intensity is maximum. The gradient of this potential

Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor

A Bose-Einstein condensate was produced in a vapor of rubidium-87 atoms that was confined by magnetic fields and evaporatively cooled and exhibited a nonthermal, anisotropic velocity distribution expected of the minimum-energy quantum state of the magnetic trap in contrast to the isotropic, thermal velocity distribution observed in the broad uncondensed fraction.

Separation of a benzene and nitric oxide mixture by a molecule prism

In molecule optics, a matter wave of molecules is manipulated by a molecule-optical component made out of external, typically radiative, fields. The molecule-optical index of refraction, n, for a

Creation of ultracold molecules from a Fermi gas of atoms

The creation and quantitative characterization of ultracold 40K2 molecules is reported, which can be converted back to atoms by reversing the scan, and the small binding energy of the molecules is controlled by detuning the magnetic field away from the Feshbach resonance, and can be varied over a wide range.