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  • Welcome to JILA-PFC | JILA-PFC
    directions that evolve naturally from research on the frontiers of physics In their explorations of these physics frontiers atomic molecular and optical physicists work closely with biophysicists and chemical physicists as well as experts in precision measurement nanoscience and quantum information Quantum Baseball The Ye and Rey groups have discovered the strange rules of quantum baseball in which strontium Sr atoms are the players and photons of light are the balls The balls control the players by not only getting the atoms excited but also Reconstruction Cong Chen and his colleagues in the Kapteyn Murnane group have generated one of the most complex coherent light fields ever produced using attosecond 10 18 s pulses of circularly polarized extreme ultraviolet EUV light The circularly Creative Adventures in Coupling The Rey and Ye groups are in the midst of an extended collaboration on using the Ye group s strontium Sr lattice clock for studies of spin orbit coupling in pancake like layers of cold Sr atoms Spin orbit coupling means an atom s motion Back to the Future The Ultraviolet Surprise Imagine laser like x ray beams that can see through materials all the way into the heart of atoms Or envision

    Original URL path: http://jila-pfc.colorado.edu/ (2016-04-29)
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  • Research Collaborations | JILA-PFC
    Publications by Title Investigators Education Outreach Partnerships in Informal Science Education in the Community PISEC Education Research Community Outreach News Research Highlights Center News JILA PFC Search form Search Advanced Other JILA Sites JILA Home Research Collaborations The JILA Physics Frontier Center brings together talented investigators in a collaborative environment where they share goals ideas expertise and technology in their quest to understand and control complex quantum systems Four collaborative

    Original URL path: http://jila-pfc.colorado.edu/research/research-collaborations (2016-04-29)
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  • Building Complex Matter from the Ground Up | JILA-PFC
    simple question How do complex behaviors emerge from simple constituents and their interactions Answering this question requires an understanding of quantum systems more complex than single atoms or simple molecules It also requires a profound exploration of quantum behaviors such as entanglement in which particles or fields that are entangled respond to each other in a predictable way even over long distances The activity of building quantum matter from the ground up focuses on behaviors that arise in quantum systems assembled from ultracold atoms and molecules A detailed understanding of such behaviors promises to lead to a better understanding of the physics of liquids and solids i e condensed matter physics Researchers are currently exploring the boundary between ultracold gases and liquids using precision measurement tools to probe a complex quantum spin system in a Sr lattice optical atomic clock studying magnetism in ultracold atomic and molecular gases and creating novel states of quantum matter via long range interactions in a gas of ultracold polar molecules of potassium rubidium KRb The KRb experiment and the Sr lattice clock are both being developed as quantum simulators to test theories about the behavior of the small cold and mysterious quantum world In

    Original URL path: http://jila-pfc.colorado.edu/research/building-complex-matter-ground (2016-04-29)
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  • Engineering Many-body Systems Using Light-matter Coupling | JILA-PFC
    Using Light matter Coupling This activity is devoted to using coherent light matter interactions to provide exquisite quantum control over increasingly complex systems The first step is studying the collective behavior of increasingly complex interacting atomic systems The next step is figuring out how to use light to create interactions coherence or correlations in atomic systems The next step is engineering tiny mechanical systems that operate quantum mechanically Such systems can now be built for a specific purpose such as converting coherent microwave light to coherent infrared or visible light Current projects underway in the JILA PFC include 1 the development of the world s shortest laser pulses 2 the control of the quantum motion of tiny drums nanomechanical oscillators 3 the coherent transfer of quantum states between microwave and optical light using a tiny drum to facilitate coupling 4 the identification and study of excitons dropletons and other quantum mechanical structures in semiconductors and 5 investigations of plasmons which play a role in the optical properties of metals This research has already shown that there are many benefits from learning to manipulate multiple quantum objects at the same time These benefits include the design and development of the world

    Original URL path: http://jila-pfc.colorado.edu/research/engineering-many-body-systems-using-light-matter-coupling (2016-04-29)
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  • Molecular Coherence and Transformation | JILA-PFC
    Other JILA Sites JILA Home Molecular Coherence and Transformation In this activity JILA PFC investigators are exploring chemical reactions at the level of interactions between electrons and the coupling between electronic and nuclear motion One goal is to understand and control energy flow in interactions of small three and four atom molecules Another goal is to harness molecular coherence a state in which the quantum mechanical waves of molecules have a fixed phase relationship to explore the process of molecular transformation Simply put JILA PFC researchers want to fundamentally understand molecular interactions so they can teach molecules new tricks that will help open up new frontiers in physics research Current work in this activity includes 1 efforts to control molecular collisions and chemical reactions of ultracold molecules 2 probes of the behaviors of the nucleus and electrons in molecules including the redistribution of energy during a chemical reaction 3 the cooling and trapping of molecules found in nature to ultracold temperatures where slow moving molecules are easier to investigate 4 studies of quantum chemistry at temperatures near absolute zero and 5 the use of molecular ions in the search for an electron electric dipole moment or eEDM The eEDM is

    Original URL path: http://jila-pfc.colorado.edu/research/molecular-coherence-and-transformation (2016-04-29)
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  • Exploring High-impact Synergistic Research Directions | JILA-PFC
    Directions A key aspect of the JILA PFC is the willingness of its scientists to import and export interesting ideas and technologies into and out of the JILA PFC This interactive strategy has not only opened the door to creative collaborations with the Departments of Physics Chemistry and Biochemistry and Molecular Cellular and Developmental Biology as well as the School of Engineering at the University of Colorado but also with NIST Boulder Some of the exciting connections made to JILA PFC research include molecular beam technology that has enabled studies of the liquid gas interface a tabletop apparatus that produces ultrafast x rays used in probing energy flow through proteins fundamental physics research resulting in improved precision measurement technologies the development of atom chips and the creation of a new field of research known as atomtronics in which scientists create ultracold atom analogs of electronic devices and circuits The connections to JILA PFC research extend far beyond the academic community For instance a local Colorado company ColdQuanta was spun off from the JILA PFC in 2007 ColdQuanta sells atom chip Bose Einstein condensate vacuum cells a commercial BEC system and atom chip and miniature vacuum cell technology all of which

    Original URL path: http://jila-pfc.colorado.edu/research/exploring-high-impact-synergistic-research-directions (2016-04-29)
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  • News & Highlights | JILA-PFC
    been a race to the finish line as labs all over the world had also been read more The Guiding Light Published 09 21 2015 The Kapteyn Murnane group with Visiting Fellow Charles Durfee has figured out how to use visible lasers to control x ray light The new method not only preserves the beautiful coherence of laser light but also makes an array of perfect x ray laser beams with controlled direction and polarization Such pulses may soon be used for observing chemical reactions or investigating the electronic motions inside atoms They are also well suited for studying magnetic materials and chiral molecules read more An Array of Possibilities Published 08 19 2015 Graduate student Brian Lester of the Regal group has taken an important step toward building larger more complex systems from single atom building blocks His accomplishment opens the door to advances in neutral atom quantum computing investigations of the interplay of spin and motion as well as the synthesis of novel single molecules from different atoms What Lester did was to create a 2 x 2 array of independent optical tweezers traps each containing a single neutral rubidium atom He read more Lattice Light and the Chips Published 08 10 2015 Compact and transportable optical lattices are coming soon to a laboratory near you thanks to the Anderson group and its spin off company ColdQuanta A new robust on chip lattice system which measures 2 3 cm on a side is now commercially available The chip comes with a miniature vacuum system lasers and mounting platform Graduate student Cameron Straatsma and his colleagues recently completed a successful proof of principle experiment with the on chip optical lattice system Their goal read more Metamorphosis Published 07 01 2015 A grand challenge of ultracold physics is figuring out how fermions become bosons This is an important question because the tiniest quantum particles of matter are all fermions However these fermions can form larger chunks of matter such as atoms and molecules which can be either fermions or bosons An interesting feature of fermions and bosons is that they behave very differently at ultracold temperatures Fermions prefer to go it alone while bosons tend to hang out together To learn read more About Time Published 04 21 2015 The Ye group has just improved the accuracy of the world s best optical atomic clock by another factor of three and set a new record for clock stability The accuracy and stability of the improved strontium lattice optical clocks is now about 2 x 10 18 or the equivalent of not varying from perfect time by more than one second in 15 billion years more than the age of the Universe Clocks like the Ye Group optical lattice clocks are now so exquisitely precise that they may have outpaced read more A Bug s Life Published 04 20 2015 The Ye Group recently investigated what first appeared to be a bug in an experiment and made an unexpected discovery about

    Original URL path: http://jila-pfc.colorado.edu/news/news-highlights (2016-04-29)
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  • Publications by Year | JILA-PFC
    223003 2015 DOI URL Ultrastable measurement platform sub nm drift over hours in 3D at room temperature Journal Article Walder R Paik D H Bull M S Sauer C Perkins T T Ultrastable measurement platform sub nm drift over hours in 3D at room temperature Optics Express 23 16554 2015 DOI URL Ligand Influence on the Electronic Spectra of Monocationic Copper Bipyridine Complexes Journal Article Xu S Gozem S Krylov A I Christopher C R Weber J M Ligand Influence on the Electronic Spectra of Monocationic Copper Bipyridine Complexes Phys Chem Chem Phys 2015 DOI URL Spatial spectral and polarization multiplexed ptychography Journal Article Karl R Bevis C Lopez Rios R Reichanadter J Gardner D Porter C Shanblatt E Tanksalvala M Mancini G F Murnane M M Kapteyn H C Adams D E Spatial spectral and polarization multiplexed ptychography Optics Express 23 30250 2015 DOI URL Photoelectron Spectroscopy of the Methide Anion Electron Affinities of CH3 and CD3 and Inversion Splittings of CH3 and CD 3 Journal Article Oliveira A M Lu Y J Lehman J H Changala P B Baraban J H Stanton J F Lineberger W C Photoelectron Spectroscopy of the Methide Anion Electron Affinities of CH3 and CD3 and Inversion Splittings of CH3 and CD 3 Journal of the American Chemical Society 137 12939 12945 2015 DOI URL Sub Doppler infrared spectroscopy of propargyl radical H2CCCH in a slit supersonic expansion Journal Article Chang C H Nesbitt D J Sub Doppler infrared spectroscopy of propargyl radical H2CCCH in a slit supersonic expansion The Journal of Chemical Physics 142 244313 2015 DOI URL Observation of iron spin states using tabletop x ray emission spectroscopy and microcalorimeter sensors Journal Article Joe Y I O Neil G C Miaja Avila L Fowler J W Jimenez R Silverman K L Swetz D S Ullom J N Observation of iron spin states using tabletop x ray emission spectroscopy and microcalorimeter sensors Journal of Physics B Atomic Molecular and Optical Physics 49 024003 2015 DOI URL Femtosecond Measurements Of Size Dependent Spin Crossover In FeII pyz Pt CN 4 Nanocrystals Journal Article Sagar D M Baddour F G Konold P Ullom J Ruddy D A C J J Jimenez R Femtosecond Measurements Of Size Dependent Spin Crossover In FeII pyz Pt CN 4 Nanocrystals The Journal of Physical Chemistry Letters 7 148 153 2015 DOI URL Single Molecule FRET Reveals Three Conformations for the TLS Domain of Brome Mosaic Virus Genome Journal Article Vieweger M Holmstrom D Nesbitt D J Single Molecule FRET Reveals Three Conformations for the TLS Domain of Brome Mosaic Virus Genome Biophysical Journal 109 2625 2636 2015 DOI URL Role of interspecies interactions in the preparation of a low entropy gas of polar molecules in a lattice Journal Article Safavi Naini A Wall M L Rey A M Role of interspecies interactions in the preparation of a low entropy gas of polar molecules in a lattice Physical Review A 92 063416 2015 DOI URL Quantum enabled temporal and spectral mode conversion of microwave signals Journal Article Andrews R W Reed A P Cicak K Teufel J D Lehnert K W Quantum enabled temporal and spectral mode conversion of microwave signals Nature Communications 6 10021 2015 DOI URL Nonlinear spectroscopy of Sr atoms in an optical cavity for laser stabilization Journal Article Christensen B T R Henriksen M R Schäffer S A Westergaard P G Tieri D A Ye J Holland M J Thomsen J W Nonlinear spectroscopy of Sr atoms in an optical cavity for laser stabilization Physical Review A 92 053820 2015 DOI URL Entangling two transportable neutral atoms via local spin exchange Journal Article Kaufman A M Lester B J Foss Feig M Wall M L Rey A M Regal C A Entangling two transportable neutral atoms via local spin exchange Nature 2015 DOI Attosecond Coherent Control of Single and Double Photoionization in Argon Journal Article Hogle C W Tong X M Martin L Murnane M M Kapteyn H C Ranitovic P Attosecond Coherent Control of Single and Double Photoionization in Argon Physical Review Letters 115 2015 DOI URL Heavy Fermion Valence Bond Liquids in Ultracold Atoms Cooperation of the Kondo Effect and Geometric Frustration Journal Article Isaev L Rey A M Heavy Fermion Valence Bond Liquids in Ultracold Atoms Cooperation of the Kondo Effect and Geometric Frustration Physical Review Letters 115 165302 2015 DOI URL Non collinear generation of angularly isolated circularly polarized high harmonics Journal Article Hickstein D D Dollar F J Grychtol P Ellis J L Knut R Hernández García C Zusin D Gentry C Shaw J M Fan T Dorney K M Becker A Jaron Becker A Kapteyn H C Murnane M M Durfee C G Non collinear generation of angularly isolated circularly polarized high harmonics Nature Photonics 9 743 750 2015 DOI Optomechanical Raman ratio thermometry Journal Article Purdy T P Yu P L Kampel N S Peterson R W Cicak K Simmonds R W Regal C A Optomechanical Raman ratio thermometry Physical Review A 92 2015 DOI URL Demagnetization dynamics of noninteracting trapped fermions Journal Article Koller A P Mundinger J Wall M L Rey A M Demagnetization dynamics of noninteracting trapped fermions Physical Review A 92 2015 DOI URL Synchronization of interacting quantum dipoles Journal Article Zhu B Schachenmayer J Xu M Herrera F Restrepo J G Holland M J Rey A M Synchronization of interacting quantum dipoles New Journal of Physics 17 083063 2015 DOI URL Adiabatic control of atomic dressed states for transport and sensing Journal Article Cooper N R Rey A M Adiabatic control of atomic dressed states for transport and sensing Physical Review A 92 021401 2015 DOI URL Collective Phenomena and Long Range Interactions in Ultracold Atoms and Molecules Quantum Magnetism with Ultracold Molecules Book Chapter Wall M L Hazzard K R A Rey A M Collective Phenomena and Long Range Interactions in Ultracold Atoms and Molecules Quantum Magnetism with Ultracold Molecules In Malinovskaya S A and Novikova I From Atomic to Mesoscale The Role

    Original URL path: http://jila-pfc.colorado.edu/publications/scientific/year (2016-04-29)
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