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1.
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Published October 26, 2009 The properties of graphene might be studied from another angle by putting ultracold atoms into a hexagonal optical lattice. |
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Published October 5, 2009 Femtosecond light pulses at two different frequencies are effective in aligning and orienting molecules without the need for a strong static field. |
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Published September 28, 2009 The atoms in an optical lattice could form the basis for a complete circuit including a diode or a transistor. |
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Published September 28, 2009 A Bose-Einstein condensate of calcium atoms has been created, the first from alkaline earth elements and potentially useful for stable clocks and precision measurements. |
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Published September 21, 2009 Atomic & Molecular Physics Optics Ultrafast optical probing of an ionized molecule with different pulse durations reveals details of the dynamics of vibrational excitations. |
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Published September 14, 2009 A new model yields insights about fermionic pairing in ultracold gases. |
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Published September 14, 2009 A trapped ion reveals the difference between a quantum particle executing a random walk and its classical version. |
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Published September 8, 2009 Cavity cooling maintains the coherence of the internal states of a positively charged ion, which is essential for the storage of quantum information. |
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Published August 24, 2009 Patterns of ultracold atoms in an optical lattice can be engineered on a microscale by selectively removing atoms from individual sites. |
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Published August 3, 2009 Weakly bound three-body states have now been observed in mixtures of two different ultracold atoms. |
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Published August 3, 2009 An optical-lattice clock based on atoms with spin-1/2 nuclei could potentially challenge the current clock standard. |
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Published July 13, 2009 Atomic & Molecular Physics Particles & Fields Monopoles with a single magnetic charge could be simulated in Bose-Einstein condensates |
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Published July 6, 2009 Ultrafast laser measurements map out the electronic structure of a neutral molecule as it photoionizes and breaks apart, leading to new conclusions about the time it takes for dissociation to occur. |
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Published March 16, 2009 New measurements have pinned down the frequency of a long-lived optical transition in ytterbium with the potential for better atomic clocks. |
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Published March 9, 2009 The hyperfine levels of a calcium ion form the basis of a qubit that stores quantum information with high fidelity for nearly 100 ms. |
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Published January 22, 2009 Trapping atoms inside of a submicron volume for applications such as quantum computing and nanoscale optics poses a host of experimental difficulties. One idea for doing this takes advantage of the strong electric field that can be excited on the surface of metal nanoparticles. |
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Published January 16, 2009 Ultracold atoms in an optical lattice share a lot of physics with electrons in a crystalline solid and it is a system that is often much easier to control. By forcing an optical lattice to vary with time, it is possible to engineer the energy of cold atoms and essentially bring them to a halt. |
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Published December 22, 2008 A new method for computing electron properties in many-electron molecules yields better results at lower computational cost. |
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Published December 15, 2008 Atomic & Molecular Physics Optics Lasers can make an opaque material transparent, but to determine how long this state survives, you have to shut off the lights. |
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Published October 30, 2008 Atomic & Molecular Physics Optics Successive and rapid measurements of a quantum system can prevent it from evolving in time. This quantum Zeno effect has now been demonstrated for light inside a cavity. |
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Published September 22, 2008 Tuning the interactions between ultracold atoms leads to a strongly interacting superfluid with properties more akin to liquid helium than a dilute Bose-Einstein condensate. |
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Published September 9, 2008 Atoms subjected to strong optical fields exhibit splitting of energy levels. The same effect has now been observed when an atom moves through the periodic field of a crystal lattice. |
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Published September 2, 2008 When an atom is bombarded with just enough energy to fully ionize it, how do the electrons and nucleus break apart from each other? Experimentalists are now able to study such a four-body breakup by bombarding a helium atom with an electron. |
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Published July 28, 2008 The atoms in highly excited vibrational states of a diatomic molecule can be quite far apart near their maximum excursion. Physicists are now using laser spectroscopy to carefully measure the long-range effective interaction between potassium atoms in these states—an essential parameter to understanding ultracold atomic collisions. |
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Published July 14, 2008 Lasers can confine atoms in one-dimensional traps. Now, the right superposition of lasers can act as one-way barriers that let atoms move in one direction, but not the other. |
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