Publications

Recent Publications

  • Tom Dowdall and Andreas Ruschhaupt
    Title: "Transport of atoms across an optical lattice using an external harmonic potential"
    arXiv: 2002.05976
    Abstract: Precise control of quantum particles is required for many interesting or novel experiments. Here we consider the task of transporting an atom using an external harmonic potential from one well of an optical lattice to another without motional excitations. To achieve this we apply techniques from Shortcuts to Adiabaticity (STA) enabling fast and robust state manipulation. The process is split up into three independent building blocks; first the atom is loaded into an additional external harmonic trap; this trap is then transported from one lattice site to another and finally the atom is unloaded back onto the lattice by opening the external harmonic trap. We design protocols for each of these building blocks separately using invariant-based inverse engineering. Additionally we extend this method to the transport of a Bose-Einstein condensate described by the Gross-Pitaevskii equation.

  • Xiao-Jing Lu, Andreas Ruschhaupt, Sofía Martínez-Garaot and J.Gonzalo Muga
    Title: "Noise Sensitivities for an Atom Shuttled by a Moving Optical Lattice via Shortcuts to Adiabaticity"
    arXiv: 2002.03951
    Abstract: We find the noise sensitivities (i.e., the quadratic terms of the energy with respect to the perturbation of the noise) of a particle shuttled by an optical lattice that moves according to a shortcut-to-adiabaticity transport protocol. Noises affecting different optical lattice parameters, trap depth, position, and lattice periodicity, are considered. We find generic expressions of the sensitivities for arbitrary noise spectra but focus on the white-noise limit as a basic reference, and on Ornstein-Uhlenbeck noise to account for the effect of non-zero correlation times.

  • Chris Whitty, Anthony Kiely and Andreas Ruschhaupt
    Title: "Quantum Control via Enhanced Shortcuts to Adiabaticity"
    arXiv: 1912.06057
    Abstract: Fast and robust quantum control protocols are often based on an idealised approximate description of the relevant quantum system.
    While this may provide a performance which is close to optimal, improvements can be made by incorporating elements of the full system representation. We propose a new technique for such scenarios, called enhanced shortcuts to adiabaticity (eSTA). The eSTA method works for previously intractable Hamiltonians by providing an analytical correction to existing STA protocols. This correction can be easily calculated and the resulting protocols are outside the class of STA schemes. We demonstrate the effectiveness of the method for three distinct cases: manipulation of an internal atomic state beyond the rotating wave approximation, transport of a neutral atom in an optical Gaussian trap and transport of two trapped ions in an anharmonic trap.

  • D. Guéry-Odelin, A. Ruschhaupt, A. Kiely, E. Torrontegui, S. Martínez-Garaot and J. G. Muga, "Shortcuts to adiabaticity: concepts, methods, and applications",
    Rev. Mod. Phys. 91, 045001 (2019), https://arxiv.org/abs/1904.08448 

  • A. Kiely, J. G. Muga and A. Ruschhaupt, "Selective population of a large angular momentum state in an optical lattice", Physical Review A 98, 053616 (2018)

  • X.-J. Lu, A. Ruschhaupt and J. G. Muga, "Fast shuttling of a particle under weak spring-constant noise of the moving trap“, Physical Review A 97, 053402 (2018)

  • T. Dowdall and A. Ruschhaupt, "Trapping and cooling particles using a moving atom diode and an atomic mirror“, Physical Review A 97, 013412 (2018)

Selection of further publications

Scientific Book

  • "Time in Quantum Mechanics - Vol. 2“
    Lecture Notes in Physics, Vol. 789 (Springer, 2009)
    J. G. Muga, A. Ruschhaupt and A. del Campo (Editors)

Book Chapters

  • A. Ruschhaupt and R. F. Werner, "Quantum Mechanics of Time“ in "The Message of Quantum Science” (Ph. Blanchard, J. Fröhlich, Editoren, Springer, 2015)
  • A. Ruschhaupt, J. G. Muga and G. C. Hegerfeldt, "Detector models for the quantum time of arrival“, in "Time in Quantum Mechanics - Vol. 2“ (Lecture Notes in Physics, Vol. 789, 2009), J. G. Muga, A. Ruschhaupt and A. del Campo (Editoren)
  • A. Ruschhaupt, "An Application of EEQT: Tunneling Times“ in Ph. Blanchard et. al. (Editoren) "Decoherence: Theoretical, Experimental, and Conceptual Problems“ (LNP 538, Springer, 2000)

All further publications

  • A. Ruschhaupt, T. Dowdall, M. A. Simon and J. G. Muga, "Asymmetric scattering by non-Hermitian potentials", EPL (Europhysics Letters) 120,  20001 (2017)
  • M. Pons, Y. Y. Cui, A. Ruschhaupt, M. A. Simón and J. G. Muga, "Local rectification of heat flux“, EPL 119, 64001 (2017)
  • T. Dowdall, A. Benseny, Th. Busch and A. Ruschhaupt, "Fast and robust quantum control based on Pauli blocking“, Physical Review A 96, 043601 (2017)
  • E. Torrontegui, I. Lizuain, S. González-Resines, A. Tobalina, A. Ruschhaupt, R. Kosloff and J. G. Muga, "Energy consumption for shortcuts to adiabaticity“, Physical Review A 96, 022133 (2017)
  • A. Benseny, A. Kiely, Y. Zhang, T. Busch and A. Ruschhaupt, "Spatial non-adiabatic passage using geometric phases“, EPJ Quantum Technology 4, 3 (2017)
  • A. Kiely, J. G. Muga and A. Ruschhaupt, "Effect of Poisson noise on adiabatic quantum control”, Physical Review A 95, 012115 (2017)
  • A. Kiely, A. Benseny, Th. Busch and A. Ruschhaupt, "Shaken, not stirred: Creating exotic angular momentum states by shaking an optical lattice", J. Phys. B 49 (2016) 215001
  • M. Palmero, S. Martinez-Garaot, U. G. Poschinger, A. Ruschhaupt and J. G. Muga, "Fast separation of two trapped ions“, New Journal of Physics 17, 093031 (2015)
  • S. Martínez-Garaot, A. Ruschhaupt, J. Gillet, Th. Busch and J. G. Muga, "Fast quasiadiabatic dynamics“, Physical Review A 92, 043406 (2015)
  • M. Ndong,G. Djotyan, A. Ruschhaupt and S. Guerin, "Robust coherent superposition of states by single-shot shaped pulse“, Journal of Physics B  48, 174007 (2015)
  • X.-J. Lu, M. Palmero, A. Ruschhaupt, Xi Chen and J. G. Muga, "Optimal transport of two ions under slow spring-constant drifts“, Physica Scripta 90, 074038 (2015)
  • A. Kiely, J. P. L. McGuinness, J. G. Muga and A. Ruschhaupt, "Fast and stable manipulation of a charged particle in a Penning trap“, Journal of Physics B 48, 07550 (2015)
  • X-L Lu, J.G. Muga, X. Chen, U. G. Poschinger, F. Schmidt-Kaler and A. Ruschhaupt, "Fast shuttling of a trapped ion in the presence of noise“, Physical Review A 89, 063414 (2014)
  • A. Kiely and A. Ruschhaupt, "Inhibiting unwanted transitions in population transfer in two- and three-level quantum systems“, Journal of Physics B 47, 115501 (2014)
  • E. Torrontegui, S. Ibánez, S. Martínez-Garaot, M. Modugno, A. del Campo, D. Guéry-Odelin, A. Ruschhaupt, X. Chen and J. G. Muga, "Shortcuts to Adiabaticity“, Advances In Atomic, Molecular, And Optical Physics, 62, 117 (2013)
  • D. Daems, A, Ruschhaupt, D. Sugny and S. Guérin, "Robust Quantum Control by a Single-Shot Shaped Pulse“, Physical Review Letters 111, 050404 (2013)
  • A. Ruschhaupt and J.G. Muga, "Shortcuts to adiabaticity in two-level systems: control and optimization“, Journal of Modern Optics DOI:10.1080/09500340.2013.846431 (2013)
  • X-L Lu, X. Chen, A. Ruschhaupt, D. Alonso, S. Guérin and J.G. Muga, "Fast and robust population transfer in two-level quantum systems with dephasing noise and/or systematic frequency errors“, Physical Review A 88 , 033406 (2013)
  • J. Kiukas, A. Ruschhaupt and R.F. Werner, "Full counting statistics of stationary particle beams“, Journal of Mathematical Physics 54, 042109 (2013)
  • A. Ruschhaupt, X. Chen, D. Alonso and J.G. Muga, "Optimally robust shortcuts to population inversion in two-level quantum systems“, New Journal of Physics 14, 093040 (2012)
  • S. Ibánez, X. Chen,  E. Torrontegui, J. G. Muga and A. Ruschhaupt, "Multiple Schrödinger Pictures and Dynamics in Shortcuts to Adiabaticity“, Physical Review Letters 109, 100403 (2012)
  • V.P. Singh and A. Ruschhaupt, "Optimizing the catching of atoms or molecules in two-dimensional traps“, Physical Review A 86, 043834 (2012)
  • E. Torrontegui, S. Martinez-Garaot, A. Ruschhaupt, and J. G. Muga, "Shortcuts to adiabaticity: Fast-forward approach“, Physical Review A 86, 013601 (2012)
  • J. Kiukas, A. Ruschhaupt, P. O. Schmidt and R. F. Werner, "Exact Energy-Time Uncertainty Relation for Arrival Time by Absorption“, Journal of Physics A 45, 185301 (2012)
  • W. Schmunk, M. Gramegna, G. Brida, I. P. Degiovanni, M. Genovese, H. Hofer, S. Kück, L. Lolli, M. G. A. Paris, S. Peters, M. Rajteri, A. M. Racu, A. Ruschhaupt, E. Taralli and P. Traina, "Photon Number Statistics of NV Centre Emission“, Metrologia 49, S156 (2012)
  • E. Torrontegui, X. Chen, M. Modugno, S. Schmidt, A. Ruschhaupt , D. Guéry-Odelin and J. G. Muga, "Transitionless expansion of cold atoms in optical Gaussian beam traps“, Physical Review A 85, 033605 (2012)
  • E. Torrontegui, X. Chen, M. Modugno, S. Schmidt, A. Ruschhaupt and J. G. Muga, "Fast transport of Bose-Einstein condensates“, New Journal of Physics, 14, 013031 (2012)
  • E. Torrontegui, S. Ibáñez, X. Chen, A. Ruschhaupt, D. Guéry-Odelin and J. G. Muga, "Fast atomic transport without vibrational heating“, Physical Review A 83, 013415 (2011)
  • E. Torrontegui, A. Ruschhaupt, D. Guéry-Odelin and J. G. Muga, "Simulation of quantum collinear chemical reactions with ultracold atoms“, Journal of Physics B: At. Mol. Opt. Phys. 44, 195302 (2011)
  • J. G. Muga, X. Chen, E. Torrontegui, S. Ibáñez, I. Lizuain and A. Ruschhaupt, "Shortcuts to quantum adiabatic processes“, Journal of Physics: Conference Series 306, 012022 (2011)
  • X. Chen, A. Ruschhaupt, S. Schmidt, A. del Campo,   D. Guéry-Odelin and J. G. Muga, "Fast Optimal Frictionless Atom Cooling in Harmonic Traps: Shortcut to Adiabaticity“, Physical Review Letters 104, 063002 (2010)
  • X. Chen, I. Lizuain, A. Ruschhaupt, D. Guéry-Odelin and J. G. Muga, "Shortcut to Adiabatic Passage in Two- and Three-Level Atoms“, Physical Review Letters 105, 123003 (2010)
  • I. Lizuain, J. Echanobe, A. Ruschhaupt, J. G. Muga and D. A. Steck, "Structural and dynamical aspects of avoided-crossing resonances in a 3-level Λ system“, Physical Review A 82, 065602 (2010)
  • E. Torrontegui, J. Echanobe, A. Ruschhaupt, D. Guéry-Odelin and J. G. Muga, "Cold-atom dynamics in crossed-laser-beam waveguides“, Physical Review A 82, 043420 (2010)
  • E. Ya. Sherman, J. G. Muga, V. K. Dugaev and A. Ruschhaupt, "Strong electron spin-Hall effect by a coherent optical potential“, Semiconductor Science and Technology 25, 0905004 (2010)
  • J. G. Muga, X. Chen, S. Ibáñez, I. Lizuain and A. Ruschhaupt, "Transitionless quantum drivings for the harmonic oscillator“, Journal of Physics B 43, 085509 (2010)
  • X. Chen, A. Ruschhaupt, S. Schmidt, S. Ibáñez and J. G. Muga, "Review: Shortcut to adiabaticitiy in harmonic traps“, Journal of Atomic and Molecular Sciences 1, 1 (2010)
  • J. G. Muga, Xi Chen, A. Ruschhaupt and D. Guéry-Odelin, "Frictionless dynamics of Bose-Einstein condensates under fast trap variations“, Journal of Physics B: At. Mol. Opt. Phys. 42, 241001 (2009)
  • Xi Chen, J. G. Muga, A. del Campo and A. Ruschhaupt, "Atom cooling by nonadiabatic expansion“, Physical Review A 80, 063421 (2009)
  • S. Schmidt, J. G. Muga and A. Ruschhaupt, "Stopping particles of arbitrary velocities with an accelerated wall“, Physical Review A 80, 023406 (2009)
  • J. Kiukas, A. Ruschhaupt and R. F. Werner, "Tunneling Times with Covariant Measurements”, Foundation of Physics 39, 829-846 (2009)
  • A. Ruschhaupt, A. del Campo and J. G. Muga, "Momentum-space interferometry with trapped ultracold atoms“, Physical Review A 79, 023616 (2009)
  • A. Ruschhaupt and J. G. Muga, "Control of atomic motion with an atom-optical diode on a ring“, Journal of Physics B: At. Mol. Opt. Phys. 41, 205503 (2008)
  • A. Ruschhaupt and J. G. Muga, "The atom diode - A one-way laser barrier for cooling atoms“, European Physical Journal Special Topics 159, 127–134 (2008)
  • A. Ruschhaupt and J. G. Muga, "Three-dimensional effects in atom diodes: Atom-optical devices for one-way motion“, Physical Review A 76, 013619 (2007)
  • A. Ruschhaupt, A. del Campo and J. G. Muga, "Momentum interferences of a freely expanding Bose-Einstein condensate due to interatomic interaction change“, European Physical Journal D 40, 399-403 (2006)
  • F. Delgado, J. G. Muga and A. Ruschhaupt, "Preparation of ultralow atomic velocities by transforming bound states into tunneling resonances“, Physical Review A 74, 063618 (2006)
  • I. Lizuain, J. G. Muga and A. Ruschhaupt, "Laser excitation of transverse modes in an atomic waveguide“, Physical Review A 74, 053608 (2006)
  • A. Ruschhaupt, J. G. Muga and M. G. Raizen, "One-photon atomic cooling with an optical Maxwell's demon valve“, Journal of Physics B 39, 3833 (2006)
  • A. Ruschhaupt, J. G. Muga and M. G. Raizen, "Improvement by laser quenching of an `atom diode': a one-way barrier for ultra-cold atoms“, Journal of Physics B 39, L133-L138 (2006)
  • A. Ruschhaupt and J. G. Muga, "Adiabatic interpretation of a two-level atom diode, a laser device for unidirectional transmission of ground-state atoms“, Physical Review A 73, 013608 (2006)
  • A. Ruschhaupt, F. Delgado and J. G. Muga, "Physical realization of PT-symmetric potential scattering in a planar slab waveguide“, Journal of Physics A 38, L171-L176 (2005)
  • A. Ruschhaupt, F. Delgado and J. G. Muga, "Velocity selection of ultra-cold atoms with Fabry-Perot laser devices: improvements and limits“, Journal of Physics B 38, 2665-2674 (2005)
  • Ph. Blanchard, T. Krueger and A. Ruschhaupt, "Small world graphs by iterated local edge formation“, Physical Review E 71, 046139 (2005)
  • A. Ruschhaupt and J. G. Muga, "Atom diode: a laser device for a unidirectional transmission of ground-state atoms“, Physical Review A 70, 061604(R) (2004) (62-mal zitiert)
  • A. Ruschhaupt and J. G. Muga, "Simultaneous Arrival of Information in Absorbing Waveguides“, Physical Review Letters 93, 020403 (2004)
  • A. Ruschhaupt, B. Navarro and J. G. Muga, "Perfect detection of ultra-cold atoms by laser-induced ionization“, Journal of Physics B 37, L313-319 (2004)
  • A. Ruschhaupt, J. A. Damborenea, B. Navarro, J. G. Muga and G. C. Hegerfeldt, "Exact and approximate complex potentials for modelling time observables“, Europhysics Letters 67, 1-7 (2004)
  • F. Delgado, J. G. Muga and A. Ruschhaupt, "Ultrafast propagation of Schrödinger waves in absorbing media“, Physical Review A 69, 022106 (2004)
  • F. Delgado, J. G. Muga, A. Ruschhaupt, G. Garcia-Calderon and J. Villavicencio, "Tunneling dynamics in relativistic and nonrelativistic wave equations“, Physical Review A 68, 032101 (2003)
  • I. L. Egusquiza, J. G. Muga, B. Navarro and A. Ruschhaupt, "Comment on: On the standard quantum-mechanical approach to times of arrival“, Physics Letters A 313, 498-501 (2003)
  • A. Ruschhaupt, "Relativistic time of arrival and traversal time“, Journal of Physics A 35, 10429-10443 (2002)
  • A. Ruschhaupt, "A relativistic extension of event enhanced quantum theory“, Journal of Physics A 35, 9227-9243 (2002)
  • Ph. Blanchard, A. Jadczyk and A. Ruschhaupt, "How events come into being: EEQT, particle tracks, quantum chaos and tunnelling time“, Journal of Modern Optics 47, 2247-2263 (2000)
  • A. Ruschhaupt, "Simulations of barrier traversal and reflection times based on event enhanced quantum theory“, Physics Letters A 250, 249-256 (1998)

Quantum Control via Shortcuts to Adiabaticity

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