Coherent Transfer and Electron Teleportation in Semiconductor Double Quantum Well

Rüfenacht, M.; Tsujino, S.; Allen, S. J.; Schoenfeld, Winston V.; Petroff, P. M.

doi:10.1002/1521-3951(200009)221:1<407::aid-pssb407>3.0.co;2-u

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…4b is measured with HeNe laser (8 mWcm À2 ) excitation at À1:5 V dc biased condition, and Fig. 4b, the dephasing time is estimated to be 200 fs [6], similar to the previously reported value [10]. An extended interference oscillation is observed for delay time larger than 0.2 ps, which is not seen in the interferogram of the infrared light itself (Fig.…”

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confidence: 85%

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Quantum Control of Electron Transfer

Tsujino

Rüfenacht

Miranda

et al. 2000

phys. stat. sol. (b)

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supporting

confidence: 85%

“…

We explore electron transfer in double quantum well structures induced by femtosecond mid-infrared intersubband excitation. The possibility of coherent transfer of electrons by femtosecond intersubband excitations in CTDQWs has recently been proposed [5,6]. The process results in upconversion of the mid-infrared exciting light to near-infrared luminescence.

…”

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confidence: 99%

Quantum Control of Electron Transfer

Tsujino

Rüfenacht

Miranda

et al. 2000

phys. stat. sol. (b)

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“…The idea of adiabatically transferring electrons in an electrical circuit appears to have originated around 2000/2001 [98][99][100]. These early works considered a STIRAP-like process to transfer a charge through a double quantum dot system, and as such differ qualitatively from the SAP schemes that we are concentrating on systems that do not utilize electromagnetic driving.…”

Section: Electronsmentioning

confidence: 99%

Spatial adiabatic passage: a review of recent progress

Menchon-Enrich¹,

Benseny²,

Ahufinger³

et al. 2016

Rep. Prog. Phys.

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Adiabatic techniques are known to allow for engineering quantum states with high fidelity. This requirement is currently of large interest, as applications in quantum information require the preparation and manipulation of quantum states with minimal errors. Here we review recent progress on developing techniques for the preparation of spatial states through adiabatic passage, particularly focusing on three state systems. These techniques can be applied to matter waves in external potentials, such as cold atoms or electrons, and to classical waves in waveguides, such as light or sound. CONTENTS

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“…1,2,3,4,5,6,7,8,9,10,11,12,13 The progress of techniques in nanoscale lithography and the development of the free-electron lasers (FEL) 1 which can be continuously tuned in the terahertz (THz) range, have made possible the systematic study of effects only present in intense alternating fields in this domain. Examples of these effects are the coherent suppression of tunneling (or dynamic localization) despite interwell tunneling in the structure, 14,15,16,17 the collapse of minibands in superlattices, 18 absolute negative conductance, 3,19 and photon-assisted-tunneling (PAT) in resonant tunneling diodes, 20 the AC Stark Effect, 21 and many others.…”

Section: Introductionmentioning

confidence: 99%

Nonperturbative electron dynamics in crossed fields

et al. 2002

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Intense AC electric fields on semiconductor structures have been studied in photon-assisted tunneling experiments with magnetic field applied either parallel (B ) or perpendicular (B ⊥ ) to the interfaces. We examine here the electron dynamics in a double quantum well when intense AC electric fields F , and tilted magnetic fields are applied simultaneously. The problem is treated non-perturbatively by a time-dependent Hamiltonian in the effective mass approximation, and using a Floquet-Fourier formalism. For B = 0, the quasi-energy spectra show two types of crossings: those related to different Landau levels, and those associated to dynamic localization (DL), where the electron is confined to one of the wells, despite the non-negligible tunneling between wells. B couples parallel and in-plane motions producing anti-crossings in the spectrum. However, since our approach is non-perturbative, we are able to explore the entire frequency range. For high frequencies ω, we reproduce the well known results of perfect DL given by zeroes of a Bessel function. We find also that the system exhibits DL at the same values of the field F , even as B = 0, suggesting a hidden dynamical symmetry in the system which we identify with different parity operations. Symmetries under general parity operations explain many of the features in the spectra, and their overall behavior under magnetic field. The return times for the electron at various values of field exhibit interesting and complex behavior which is also studied in detail. We find that smaller ω shifts the DL points to lower eF d/ ω ratios, and more importantly, yields poorer (less effective) localization by the field, while other states change also physical character. We analyze the explicit time evolution of the system, monitoring the elapsed time to return to a given well for each Landau level, and find non-monotonic behavior for decreasing frequencies.

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Coherent Transfer and Electron Teleportation in Semiconductor Double Quantum Well

Cited by 4 publications

References 6 publications

Quantum Control of Electron Transfer

Quantum Control of Electron Transfer

Spatial adiabatic passage: a review of recent progress

Nonperturbative electron dynamics in crossed fields

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