Bulletin of the American Physical Society
APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014; Denver, Colorado
Session D32: Invited Session: Quantum Simulation and Computation with AMO Systems |
Hide Abstracts |
Sponsoring Units: GQI DAMOP Chair: Ivan Deutsch, Unversity of New Mexico Room: 708-712 |
Monday, March 3, 2014 2:30PM - 3:06PM |
D32.00001: Quantum simulations with trapped ions Invited Speaker: Rainer Blatt The basic tool box of the Innsbruck quantum computer based on a string of trapped Ca$^{\mathrm{+}}$ ions will be reviewed. The quantum toolbox is applied to carry out both analog and digital quantum simulations. In this talk, the basic simulation procedure will be presented and its application will be discussed for a variety of spin Hamiltonians. Including a carefully controlled dissipation mechanism, the toolbox allows for the quantum simulation of open systems. A string of ions is used to implement a quantum system that interacts by means of quantum gate operations with an additional ancilla ion which in turn is coupled to the environment in a well-controlled way. Thus, entangled states, such as Bell and GHZ states can be generated by dissipative processes and can be used as part of a quantum simulator. Recent experimental results on the simulation of competing coherent and dissipative processes will be discussed. [Preview Abstract] |
Monday, March 3, 2014 3:06PM - 3:42PM |
D32.00002: New Frontiers for Quantum Simulation in Optical Lattices Invited Speaker: David Weld Quantum simulation experiments exploit an analogy between some interesting (generally solid-state) system and some well-controlled quantum mechanical ensemble, typically consisting of atoms, ions, or photons. This analogy is a two-way street, enabling insights into the behavior of strongly correlated electrons but also enabling the application of powerful condensed-matter experimental techniques such as adiabatic demagnetization or dilution refrigeration to ultracold gases. I will discuss some prospects and challenges for quantum simulation experiments with neutral atoms in optical lattices. Initial directions in this field included the study of metal-insulator transitions and magnetic systems. Emerging possibilities include experiments relevant to topologically nontrivial materials, quasicrystals, impurities, and nonequilibrium phenomena. [Preview Abstract] |
Monday, March 3, 2014 3:42PM - 4:18PM |
D32.00003: Progress in Quantum Information Processing with Trapped Ions at NIST Invited Speaker: Dietrich Leibfried This talk will provide an overview of the progress in quantum information processing (QIP) with trapped ions at NIST. In particular, improvements of ion transport and cooling within a scalable architecture for QIP, experiments entangling the internal states of ions held in separate trapping wells and the realization of Bell-state pumping, where an entangled steady-state of two ions emerges as the result of partly dissipative interactions, will be discussed.\\[4pt] For the recent work done at NIST I gratefully acknowledge important contributions by David Allcock, Jim Bergquist, Brad Blakestad, Shaun Burd, John Bollinger, Ryan Bowler, Sam Brewer, Joe Britton, Kenton Brown, Jwo-Sy Chen, James Chou, Shon Cook, Yves Colombe, Dustin Hite, Wayne Itano, Robert Joerdens, John Jost, Emanuel Knill, Shlomi Kotler, David Leibrandt, Yiheng Lin, Katherine McCormick, Kyle McKay, Christian Ospelkaus, David Pappas, Daniel Slichter, Brian Saywer, Ting Rei Tan, Andrew Wilson, David Wineland and funding by DARPA, IARPA, ARO, ONR and the NIST Quantum Information Program. [Preview Abstract] |
Monday, March 3, 2014 4:18PM - 4:54PM |
D32.00004: Dynamical Analogue Quantum Simulators Invited Speaker: Jens Eisert Complex quantum systems out of equilibrium are at the basis of a number of long-standing questions in physics. This talk will be concerned on the one hand with recent progress on understanding how quantum many-body systems out of equilibrium eventually come to rest, thermalise and cross phase transitions, on the other hand with dynamical analogue quantum simulations using cold atoms probing such questions [1-4]. In an outlook, we will discuss the question of certification of quantum simulators, and will how this problem also arises in other related settings, such as in Boson samplers [5,6].\\[4pt] [1] S. Braun, M. Friesdorf, S. S. Hodgman, M. Schreiber, J. P. Ronzheimer, A. Riera, M. del Rey, I. Bloch, J. Eisert, U. Schneider, in preparation (2014).\\[0pt] [2] M. Kliesch, M. Kastoryano, C. Gogolin, A. Riera, J. Eisert, arXiv:1309:0816.\\[0pt] [3] S. Trotzky, Y.-A. Chen, A. Flesch, I. P. McCulloch, U. Schollwoeck, J. Eisert, I. Bloch, Nature Physics 8, 325 (2012).\\[0pt] [4] A. Riera, C. Gogolin, M. Kliesch, J. Eisert, in preparation (2014).\\[0pt] [5] C. Gogolin, M. Kliesch, L. Aolita, J. Eisert, in preparation (2014) and arXiv:1306.3995.\\[0pt] [6] S. Aaronson, A. Arkhipov, arXiv:1309.7460. [Preview Abstract] |
Monday, March 3, 2014 4:54PM - 5:30PM |
D32.00005: Quantum simulation with cold molecules Invited Speaker: Ana Maria Rey Recent experimental developments on cooling, trapping, manipulating and loading ultra-cold ground state molecules in an optical lattice have opened the door for the exploration of quantum magnetism and the observation of complex quantum dynamics. In this talk I will discuss recent developments towards the implementation of controllable spin lattice models in polar molecules with the spin degrees of freedom encoded in rotational states. The spin-spin couplings are generated by direct dipolar interactions and can be fully controlled by dc electromagnetic fields and microwaves. The spin models realized in this way are long range, anisotropic and can even feature direction-dependent spin interactions. They can emulate Hamiltonians ranging from the Heisenberg spin model, to Hamiltonians with symmetry protected topological phases to Hamiltonians without solid state counterpart. At JILA we have been able to realize for the first time a lattice spin model with fermionic KRb molecules pinned in a 3D lattice. We observe clear manifestation of dipolar exchange interactions in Ramsey spectroscopy even at substantially less than unit lattice filling. I will describe the new theoretical methods that we developed to model the spin dynamics and show that those reproduce the experimental observations. Even though so far the spin dynamics has been restricted to pinned molecules, in part to prevent chemical reactions, I will finish by presenting theoretical calculations supported by experimental measurement at JILA that demonstrate that the continuous quantum Zeno mechanism can actually suppress loss in this highly reactive system. This finding opens the exciting possibility of observing itinerant quantum magnetism in near term experiments. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700