Optoelectrical Cooling of Polar Molecules to Submillikelvin Temperatures

Prehn, Alexander; Ibrügger, Martin; Glöckner, Rosa; Rempe, Gerhard; Zeppenfeld, Martin

doi:10.1103/physrevlett.116.063005

Cited by 169 publications

(174 citation statements)

References 39 publications

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“…48 Rempe's group 49,50 has applied an optoelectrical method for cooling and collecting polar molecules in an electric trap. This approach based on Sisyphus cooling was recently demonstrated for the CH 3 F 50 and formaldehyde (H 2 CO) 51 molecules and it holds great promise for precision spectroscopy and collisional studies of cold and ultracold polar molecules. More recently, methods using merged supersonic beams have been developed where a magnetic quadrupole guided beam crosses at a small angle with another supersonic beam so that the relative velocity of the collision is small.…”

Section: A Methods For Creation Of Cold and Ultracold Moleculesmentioning

confidence: 99%

Perspective: Ultracold molecules and the dawn of cold controlled chemistry

Balakrishnan

2016

The Journal of Chemical Physics

275

271

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Ultracold molecules offer unprecedented opportunities for the controlled interrogation of molecular events, including chemical reactivity in the ultimate quantum regime. The proliferation of methods to create, cool, and confine them has allowed the investigation of a diverse array of molecular systems and chemical reactions at temperatures where only a single partial wave contributes. Here we present a brief account of recent progress on the experimental and theoretical fronts on cold and ultracold molecules and the opportunities and challenges they provide for a fundamental understanding of bimolecular chemical reaction dynamics. Published by AIP Publishing. [http://dx

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Section: A Methods For Creation Of Cold and Ultracold Moleculesmentioning

confidence: 99%

Perspective: Ultracold molecules and the dawn of cold controlled chemistry

Balakrishnan

2016

The Journal of Chemical Physics

275

271

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“…In 2017 J. Doyle's team at Harvard University has reported the first observation of fast Sisyphus laser cooling of SrOH to the temperature of ∼750 µK [10]. To our knowledge the only competitive method currently allowing to cool polyatomic (four-and bigger multi-atomic molecules) to submillikelvin temperatures is optoelectrical Sisyphus cooling method [11,12]. The latter method, though having great potential, relies on strong Stark interaction with external field and is expected to be most effective when applied to molecules with rather large dipole moments.…”

Section: Introductionmentioning

confidence: 99%

Laser-coolable polyatomic molecules with heavy nuclei

Isaev

Zaitsevskii

Eliav

2017

J. Phys. B: At. Mol. Opt. Phys.

102

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Recently a number of diatomic and polyatomics molecules has been identified as a prospective systems for Doppler/Sisyphus cooling. Doppler/Sisyphus cooling allows to decrease the kinetic energy of molecules down to microkelvin temperatures with high efficiency and then capture them to molecular traps, including magneto-optical trap. Trapped molecules can be used for creation of molecular fountains and/or performing controlled chemical reactions, high-precision spectra measurements and a multitude of other applications. Polyatomic molecules with heavy nuclei present considerable interest for the search for "new physics" outside of Standard Model and other applications including cold chemistry, photochemistry, quantum informatics etc. Herein we would like to attract attention to radium monohydroxide molecule (RaOH) which is on the one hand an amenable object for laser cooling and on the other hand provides extensive possibilities for searching for P-odd and P, T -odd effects. At the moment RaOH is the heaviest polyatomic molecule proposed for direct cooling with lasers.

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“…For example, the current state-of-the-art for the molecular magneto-optical trap (MOT) [27,28,29] is about 2000 molecules of SrF at ∼ 400 µK [30], corresponding to a phase-space density orders of magnitude smaller than typical atomic alkali MOTs of 10 9 −10 10 atoms at ∼ 10 µK. Many other techniques have also been employed to create cold molecules, such as photoassociation [31], buffer gas cooling [32], Stark deceleration [33,34], and Sisyphus cooling [35]; however, the achieved phase-space densities are all very far from that required for quantum degeneracy. In this Review we discuss the only method demonstrated so far for producing ultracold molecules in the quantum regime: the creation of weakly bound bialkali dimers from an ultracold atomic mixture, followed by coherent optical state transfer to the rovibrational ground state.…”

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confidence: 99%

New frontiers for quantum gases of polar molecules

et al. 2016

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The field of ultracold quantum matter has burgeoned over the last few decades, thanks to the growing capabilities for atomic systems to be probed and manipulated with exquisite control. Researchers can now precisely create and study quantum manybody states that are effectively isolated from the external environment. Much of the work in ultracold matter has focused on systems of alkali or alkaline-earth atoms, mainly due to their ease of cooling. Extending this precise control to molecules has seen rapidly increasing interest and activity, as molecules possess additional degrees of freedom that make them useful for tests of fundamental physics, studying ultracold chemistry and collisions, and engineering qualitatively new types of quantum phases and quantum many-body systems. Here, we review one particularly fruitful research direction: the creation and manipulation of ultracold bialkali molecules. The recent success in creating a quantum gas of polar molecules opens many exciting research opportunities. Atomic, Molecular, and Optical (AMO) systems offer experimentalists the ability to precisely control interactions in a quantum many-body system [1,2], and a rich set of experiments has already been performed. Some prominent examples include studies of the BEC-BCS crossover in two-component Fermi gases [3,4,5] and the superfluid-Mott insulator transition in ultracold bosons loaded into a 3D optical lattice [6]. Neutral atomic systems normally have point-like contact interactions that can be parametrized with a single quantity, the scattering length a, which can be tuned via a Feshbach resonance [2]. In recent years, systems with long-range and anisotropic interactions have garnered much attention. One natural example is the dipolar interaction between polar molecules, which is the focus of this Review. Of course, many other experimental platforms are also being pursued that feature long-range interactions, including highly magnetic atoms [7,8], trapped ions The dipolar interaction exhibits several important attributes. First, the energy scales in dipolar systems are usually much larger than those in typical atomic alkali systems, making it easier to study interaction-driven structural properties and non-equilibrium dynamics. Second, and perhaps more importantly, the anisotropic and long-range nature of the interaction allows for the realization of novel quantum phases, especially when the spatial dimensions of the system can be varied with optical lattices. Some of these engineered systems may find relevance to outstanding problems in condensed-matter physics [13,14]; moreover, qualitatively new types of physics can emerge in the presence of long-range interactions [15,16,17,18,19,20,21]. As a specific example of a unique feature of long-range interactions, a spin-1/2 Hamiltonian can be encoded based on a pair of oppositeparity rotational states where dipolar interactions give rise to a direct spin exchange coupling between molecules [22,23]. With this scheme implemented in an optical lattice, many-body spin dynam...

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Optoelectrical Cooling of Polar Molecules to Submillikelvin Temperatures

Cited by 169 publications

References 39 publications

Perspective: Ultracold molecules and the dawn of cold controlled chemistry

Perspective: Ultracold molecules and the dawn of cold controlled chemistry

Laser-coolable polyatomic molecules with heavy nuclei

New frontiers for quantum gases of polar molecules

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