Spatial light modulators for the manipulation of individual atoms

Brandt, Lukas; Muldoon, Cecilia; Thiele, Tobias; Dong, Jian; Brainis, Edouard; Kuhn, Axel

doi:10.1007/s00340-010-4323-0

Cited by 14 publications

(14 citation statements)

References 40 publications

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“…In this paper, we overcome this limitation by using a digital mirror device (DMD) [19][20][21] to holographically generate arrays of independently movable dipole traps. Our DMD (Texas Instruments DLP Discovery 1100) is a 1024×768 array of micro-mechanical mirrors.…”

Section: Introductionmentioning

confidence: 99%

Single-atom trapping and transport in DMD-controlled optical tweezers

Stuart

Kuhn

2018

New J. Phys.

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We demonstrate the trapping and manipulation of single neutral atoms in reconfigurable arrays of optical tweezers. Our approach offers unparalleled speed by using a Texas instruments digital micromirror device as a holographic amplitude modulator with a frame rate of 20 000 per second. We show the trapping of static arrays of up to 20 atoms, as well as transport of individually selected atoms over a distance of 25 μm with laser cooling and 4 μm without. We discuss the limitations of the technique and the scope for technical improvements.

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Section: Introductionmentioning

confidence: 99%

Single-atom trapping and transport in DMD-controlled optical tweezers

Stuart

Kuhn

2018

New J. Phys.

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“…If the clean gas is then discarded, one again has the starting point of a disordered gas at the same initial T as a clean one. Complex optical potentials to perform these roles can be created using phase-imprinting spatial light modulators [52,53] or micromirror devices [54]. .…”

Section: Fig 3 (Color Online)mentioning

confidence: 99%

Cooling Atomic Gases With Disorder

et al. 2015

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Cold atomic gases have proven capable of emulating a number of fundamental condensed matter phenomena including Bose-Einstein condensation, the Mott transition, Fulde-Ferrell-Larkin-Ovchinnikov pairing, and the quantum Hall effect. Cooling to a low enough temperature to explore magnetism and exotic superconductivity in lattices of fermionic atoms remains a challenge. We propose a method to produce a low temperature gas by preparing it in a disordered potential and following a constant entropy trajectory to deliver the gas into a nondisordered state which exhibits these incompletely understood phases. We show, using quantum Monte Carlo simulations, that we can approach the Néel temperature of the threedimensional Hubbard model for experimentally achievable parameters. Recent experimental estimates suggest the randomness required lies in a regime where atom transport and equilibration are still robust. [5,6]. Ultracold atomic gases offer the opportunity to emulate these fundamental issues using optical speckle [7,8], impurities [9], or a quasiperiodic optical lattice [10,11] to introduce randomness. In the bosonic case, the competition between strong interactions and strong disorder has been studied in the context of the elusive Bose glass phase [7,9,11], while for fermions, a recent experiment has explored disorder-induced localization in the three-dimensional (3D) Hubbard model of strongly interacting fermions [12].In this paper, we explore the thermodynamics of interacting, disordered systems and suggest that, in addition to studies of the many-body phenomena noted above, preparing a gas in a random potential might be exploited to cool the atoms. Specifically, we show using an unbiased numerical method that one can lower the temperature and access the regime with long-range magnetic order by adiabatically decreasing the randomness in the chemical potential or hopping energies of the Hubbard Hamiltonian. The achievement of new quantum phases in cold atom experiments largely depends on the reduction of the entropy per particle. The success of our proposal requires that the gas would have to be cooled (e.g. evaporatively) after the disorder is in place. We will return in the

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“…Most other losses, e.g. losses due to background gas collisions or scattering of trapping light, would account for much longer lifetimes (estimates are given in [25]). For all traps of radius 3 µm, the atom number was sufficiently large for time-of-flight measurements, which yield a consistent temperature of 90 ± 10 µK.…”

Section: Atoms Trapped In Arbitrary Potential Landscapesmentioning

confidence: 99%

Control and manipulation of cold atoms in optical tweezers

et al. 2012

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Neutral atoms trapped by laser light are among the most promising candidates for storing and processing information in a quantum computer or simulator. The application certainly calls for a scalable and flexible scheme for addressing and manipulating the atoms. We have now made this a reality by implementing a fast and versatile method to dynamically control the position of neutral atoms trapped in optical tweezers. The tweezers result from a spatial light modulator (SLM) controlling and shaping a large number of optical dipole-force traps. Trapped atoms adapt to any change in the potential landscape, such that one can rearrange and randomly access individual sites within atom-trap arrays.

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Spatial light modulators for the manipulation of individual atoms

Cited by 14 publications

References 40 publications

Single-atom trapping and transport in DMD-controlled optical tweezers

Single-atom trapping and transport in DMD-controlled optical tweezers

Cooling Atomic Gases With Disorder

Control and manipulation of cold atoms in optical tweezers

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