Zobrazeno 1 - 10
of 292
pro vyhledávání: '"J. G. Muga"'
Publikováno v:
Quantum, Vol 6, p 740 (2022)
We design faster-than-adiabatic state transfers (switching of quantum numbers) in time-dependent coupled-oscillator Hamiltonians. The manipulation to drive the process is found using a two-dimensional invariant recently proposed in S. Simsek and F. M
Externí odkaz:
https://doaj.org/article/5db9f059c7254c97a23f2b37431f8264
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
Abstract We study the shuttling of an atom in a trap with controllable position and frequency. Using invariant-based inverse engineering, protocols in which the trap is simultaneously displaced and expanded are proposed to speed up transport between
Externí odkaz:
https://doaj.org/article/c7e1a0708f524ea0a67dc9fccc559f52
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043162 (2020)
Cooling methods and particle slowers as well as accelerators are basic tools for fundamental research and applications in different fields and systems. We put forward a generic mechanism to scale the momentum of a particle, regardless of its initial
Externí odkaz:
https://doaj.org/article/e19ff56e9f414c7294136cb3f84593ce
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023328 (2020)
We propose a compact atom interferometer to measure homogeneous constant forces guiding the arms via shortcuts to adiabatic paths. For a given sensitivity, which only depends on the space-time area of the guiding paths, the cycle time can be made fas
Externí odkaz:
https://doaj.org/article/dba4793f58ea4c6eb4bdd0ccb480d4e1
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023372 (2020)
We propose protocols to prepare highly excited energy eigenstates of a trapped ion in a harmonic trap which do not use laser pulses to induce transitions among internal levels. Instead the protocols rely on smoothly deforming the trapping potential b
Externí odkaz:
https://doaj.org/article/c257bc7914a54079820736e11602f748
Publikováno v:
Mathematics, Vol 6, Iss 7, p 111 (2018)
We discuss Hamiltonian symmetries and invariants for quantum systems driven by non-Hermitian Hamiltonians. For time-independent Hermitian Hamiltonians, a unitary or antiunitary transformation AHA† that leaves the Hamiltonian H unchanged represents
Externí odkaz:
https://doaj.org/article/cd717486ccae4a4d9d7d092bbca37c7e
Shuttling protocols designed by shortcut-to-adiabaticity techniques may suffer from perturbations and imperfect implementations. We study the motional excitation of a single ion shuttled in harmonic traps with time-dependent, "systematic" oscillatory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beb6aed70ded7fb101f69016dfa17020
We review methods to shuttle quantum particles fast and robustly. Ideal robustness amounts to the invariance of the desired transport results with respect to deviations, noisy or otherwise, from the nominal driving protocol for the control parameters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0363c04a753dba28fc162336c1ed5945
Publikováno v:
arXiv
12 pags., 3 figs.
We present an invariant-based quantum control scheme leading to a highly monochromatic ion beam from a Paul trap. Our protocol is implementable by supplying the segmented electrodes in the trap with voltages of the order of vol
We present an invariant-based quantum control scheme leading to a highly monochromatic ion beam from a Paul trap. Our protocol is implementable by supplying the segmented electrodes in the trap with voltages of the order of vol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09d6885c7ebb3517505d2140f1a1ea7b
Publikováno v:
e-Archivo: Repositorio Institucional de la Universidad Carlos III de Madrid
Universidad Carlos III de Madrid (UC3M)
e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
instname
Digital.CSIC. Repositorio Institucional del CSIC
Universidad Carlos III de Madrid (UC3M)
e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
instname
Digital.CSIC. Repositorio Institucional del CSIC
7 pags., 3 figs., 1 tab.
Two-dimensional (2D) systems with time-dependent controls admit a quadratic Hamiltonian modeling near potential minima. Independent, dynamical normal modes facilitate inverse Hamiltonian engineering to control the system
Two-dimensional (2D) systems with time-dependent controls admit a quadratic Hamiltonian modeling near potential minima. Independent, dynamical normal modes facilitate inverse Hamiltonian engineering to control the system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca73198a118bbc936fe42c9cdb43494f
https://doi.org/10.1103/physreva.102.063112
https://doi.org/10.1103/physreva.102.063112