Spatial adiabatic passage processes in sonic crystals with linear defects

Menchon-Enrich, R.; Mompart, J.; Ahufinger, V.

doi:10.1103/physrevb.89.094304

Cited by 13 publications

(15 citation statements)

References 49 publications

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“…The remarkable properties of this protocol have already been demonstrated in diverse areas such as chemical reaction dynamics [59], laser-induced cooling of atomic gases [60], light beams propagating in three evanescently coupled optical waveguides [61][62][63][64], sound propagation in sonic crystals [65], and control of a superconducting qubit [66]. In spin-based quantum computing architecture, this protocol can be utilized to transfer qubits coherently across large distances [67].…”

Section: B Spin-selective Stirapmentioning

confidence: 95%

Spin-selective electron transfer in a quantum dot array

2018

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We propose a spin-selective coherent electron transfer in a silicon quantum dot array. Oscillating magnetic fields and temporally controlled gate voltages are utilized to separate the electron wave function into different quantum dots depending on the spin state. We introduce a nonadiabatic protocol based on π pulses and an adiabatic protocol which offer fast electron transfer and robustness against the error in the control-field pulse area, respectively. We also study a shortcut-to-adiabaticity protocol which compromises these two protocols. We show that this scheme can be extended to multielectron systems straightforwardly and used for nonlocal manipulations of electrons.

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Section: B Spin-selective Stirapmentioning

confidence: 95%

Spin-selective electron transfer in a quantum dot array

2018

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“…STIRAP has been widely studied for adiabatic transport of electrons [36,37], single atoms [38][39][40][41][42][43] and BECs [44][45][46][47], and population transfer of molecules [48][49][50][51][52][53][54][55]. It has already been demonstrated in various areas, such as control of a superconducting qubit [56], chemical reaction dynamics [57], laser-induced cooling of atomic gases [58], light beams propagating in three evanescently-coupled optical waveguides [59][60][61][62] and sound propagation in sonic crystals [63]. This protocol can be applied to transfer qubits coherently over long distance in spin-based quantum computing architecture [64].…”

Section: Spin-selective Stirap With Constant Bmentioning

confidence: 99%

Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array

2019

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Recently, we proposed the spin-selective coherent electron transfer in a silicon-quantum-dot array. It requires temporal tuning of two pulses of an oscillating magnetic field and gate voltage control. This paper proposes a simpler method that requires a single pulse of oscillating magnetic field and gate voltage control. We examined the robustness of the control against the error in the pulse amplitude and the effect of the excited states relaxation to the control efficiency. In addition, we propose a novel control method based on a shortcuts-to-adiabaticity protocol, which utilizes two pulses but requires temporal control of the pulse amplitude for only one of them. We compared their efficiencies under the effect of realistic pulse amplitude errors and relaxation.

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“…One controlled way to make progress is to try to generalize known techniques for single-particle states to either weakly-correlated manybody states or to small strongly-correlated systems [4]. In this work we focus on the well-known spatial adiabatic passage (SAP) protocol [5][6][7][8], which is a technique that allows to transfer a localized wave function between different positions in space by adiabatically following a specific energy eigenfunction. SAP for ultracold atoms has up to now only been studied for a single atom [5,[9][10][11], weakly-interacting systems [12][13][14][15], or fermionized bosons [16].…”

Section: Introductionmentioning

confidence: 99%

Spatial adiabatic passage via interaction-induced band separation

2016

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The development of advanced quantum technologies and the quest for a deeper understanding of many-particle quantum mechanics requires control over the quantum state of interacting particles to a high degree of fidelity. However, the quickly increasing density of the spectrum, together with the appearance of crossings in time-dependent processes, makes any effort to control the system hard and resource intensive. Here we show that in trapped systems regimes can exist, in which isolated energy bands appear that allow to easily generalize known single-particle techniques. We demonstrate this for the well-known spatial adiabatic passage effect, which can control the center-of-mass state of atoms with high fidelity.Comment: 7 pages, 9 figure

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Spatial adiabatic passage processes in sonic crystals with linear defects

Cited by 13 publications

References 49 publications

Spin-selective electron transfer in a quantum dot array

Spin-selective electron transfer in a quantum dot array

Theoretical Study on Spin-Selective Coherent Electron Transfer in a Quantum Dot Array

Spatial adiabatic passage via interaction-induced band separation

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