Search Results - "Torrontegui, E"

Shortcuts to adiabaticity: Concepts, methods, and applications by Guéry-Odelin, D., Ruschhaupt, A., Kiely, A., Torrontegui, E., Martínez-Garaot, S., Muga, J. G.

“…Shortcuts to adiabaticity (STA) are fast routes to the final results of slow, adiabatic changes of the controlling parameters of a system. The shortcuts are…”
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Large Quantum Delocalization of a Levitated Nanoparticle Using Optimal Control: Applications for Force Sensing and Entangling via Weak Forces by Weiss, T, Roda-Llordes, M, Torrontegui, E, Aspelmeyer, M, Romero-Isart, O

“…We propose to optimally control the harmonic potential of a levitated nanoparticle to quantum delocalize its center-of-mass motional state to a length scale…”
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Unitary quantum perceptron as efficient universal approximator by Torrontegui, E., García-Ripoll, J. J.

“…We demonstrate that it is possible to implement a quantum perceptron with a sigmoid activation function as an efficient, reversible many-body unitary…”
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Quantum neural networks with multi-qubit potentials by Ban, Yue, Torrontegui, E., Casanova, J.

“…We propose quantum neural networks that include multi-qubit interactions in the neural potential leading to a reduction of the network depth without losing…”
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Single-atom heat engine as a sensitive thermal probe by Levy, Amikam, Göb, Moritz, Deng, Bo, Singer, Kilian, Torrontegui, E, Wang, Daqing

“…We propose employing a quantum heat engine as a sensitive probe for thermal baths. In particular, we study a single-atom Otto engine operating in an open…”
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Speeding up quantum perceptron via shortcuts to adiabaticity by Ban, Yue, Chen, Xi, Torrontegui, E., Solano, E., Casanova, J.

“…The quantum perceptron is a fundamental building block for quantum machine learning. This is a multidisciplinary field that incorporates abilities of quantum…”
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Multiple Schrödinger pictures and dynamics in shortcuts to adiabaticity by Ibáñez, S, Chen, Xi, Torrontegui, E, Muga, J G, Ruschhaupt, A

“…A Schrödinger equation may be unitarily transformed into dynamical equations in different interaction pictures which describe a common physical process, i.e.,…”
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Activated and non-activated dephasing in a spin bath by Torrontegui, E, Kosloff, R

“…We analyze different decoherence processes in a system coupled to a bath. Apart from the well known standard dephasing mechanism which is temperature dependent…”
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Fast transport of Bose-Einstein condensates by Torrontegui, E, Chen, Xi, Modugno, M, Schmidt, S, Ruschhaupt, A, Muga, J G

“…We propose an inverse method to accelerate without final excitation the adiabatic transport of a Bose-Einstein condensate. The method is based on a partial…”
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Ultra-fast two-qubit ion gate using sequences of resonant pulses by Torrontegui, E, Heinrich, D, Hussain, M I, Blatt, R, García-Ripoll, J J

“…We propose a new protocol to implement ultra-fast two-qubit phase gates with trapped ions using spin-dependent kicks induced by resonant transitions. By only…”
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Vibrational mode multiplexing of ultracold atoms by Martínez-Garaot, S, Torrontegui, E, Chen, Xi, Modugno, M, Guéry-Odelin, D, Tseng, Shuo-Yen, Muga, J G

“…Sending multiple messages on qubits encoded in different vibrational modes of cold atoms or ions along a transmission waveguide requires us to merge first and…”
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Fast transitionless expansion of cold atoms in optical Gaussian-beam traps by Torrontegui, E., Chen, Xi, Modugno, M., Ruschhaupt, A., Guéry-Odelin, D., Muga, J. G.

“…We study fast expansions of cold atoms in a three-dimensional Gaussian-beam optical trap. Three different methods to avoid final motional excitation are…”
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Transient non-confining potentials for speeding up a single ion heat pump by Torrontegui, E, Dawkins, S T, Göb, M, Singer, K

“…We propose speeding up a single ion heat pump based on a tapered ion trap. If a trapped ion is excited in an oscillatory motion axially the radial degrees of…”
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Modulated Continuous Wave Control for Energy-Efficient Electron-Nuclear Spin Coupling by Casanova, J, Torrontegui, E, Plenio, M B, García-Ripoll, J J, Solano, E

“…We develop energy efficient, continuous microwave schemes to couple electron and nuclear spins, using phase or amplitude modulation to bridge their frequency…”
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Noise resistant quantum control using dynamical invariants by Levy, Amikam, Kiely, A, Muga, J G, Kosloff, R, Torrontegui, E

“…A systematic approach to design robust control protocols against the influence of different types of noise is introduced. We present control schemes which…”
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Shortcuts to adiabaticity: Fast-forward approach by Torrontegui, E., Martínez-Garaot, S., Ruschhaupt, A., Muga, J. G.

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Fast atomic transport without vibrational heating by Torrontegui, E., Ibáñez, S., Chen, Xi, Ruschhaupt, A., Guéry-Odelin, D., Muga, J. G.

“…We use the dynamical invariants associated with the Hamiltonian of an atom in a one dimensional moving trap to inverse engineer the trap motion and perform…”
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Optimal trajectories for efficient atomic transport without final excitation by Chen, Xi, Torrontegui, E., Stefanatos, Dionisis, Li, Jr-Shin, Muga, J. G.

“…We design optimal harmonic-trap trajectories to transport cold atoms without final excitation, combining an inverse engineering technique based on…”
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Fast generation of spin-squeezed states in bosonic Josephson junctions by Juliá-Díaz, B., Torrontegui, E., Martorell, J., Muga, J. G., Polls, A.

“…We describe methods for the fast production of highly coherent-spin-squeezed many-body states in bosonic Josephson junctions. We start from the known mapping…”
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Quest for absolute zero in the presence of external noise by Torrontegui, E, Kosloff, R

“…A reciprocating quantum refrigerator is analyzed with the intention to study the limitations imposed by external noise. In particular we focus on the behavior…”
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