Entanglement and quantum-state engineering in the optically driven two-electron double-dot structure

Tsukanov, A. V.

doi:10.1103/physreva.72.022344

Cited by 28 publications

(27 citation statements)

References 48 publications

(62 reference statements)

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“…The results presented in this paper may be also applied to the two-electron symmetric double-dot structure [32] and to the other systems possessing the same spectral properties, say, to the superconducting devices [31,33]. Besides we suppose that the effect of the structure asymmetry on the electron dynamics [22] may be treated in the same way.…”

Section: Discussionmentioning

confidence: 87%

Rabi oscillations in the four-level double-dot structure under the influence of the resonant pulse

Tsukanov

2006

Phys. Rev. B

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We study theoretically the quantum dynamics of an electron in the symmetric four-level double-dot structure under the influence of the monochromatic resonant pulse. The probability amplitudes of the eigenstates relevant for the quantum dynamics are found from the solution of the non-stationary Schrödinger equation. The first-order correction term to the solution obtained through the rotating wave approximation is calculated. The threelevel double-dot dynamics and the two-level single-dot dynamics, as well as the off-resonant excitation process, are derived from the general formulae for corresponding choices of the pulse and structure parameters. The results obtained may be applied to the solid-state qubit design. PACS number(s): 03.67. Lx, 73.21.La, 78.67.Hc

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Section: Discussionmentioning

confidence: 87%

Rabi oscillations in the four-level double-dot structure under the influence of the resonant pulse

Tsukanov

2006

Phys. Rev. B

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“…[33] for the two-electron double-dot structure, can be generalized on the two-electron DD structure. The use of the adiabatic schemes is of the particular interest.…”

Section: Discussionmentioning

confidence: 99%

Single-qubit operations in the double-donor structure driven by optical and voltage pulses

Tsukanov

2007

Phys. Rev. B

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We study theoretically the quantum dynamics of an electron in the singlyionized double-donor structure in the semiconductor host under the influence of laser pulses whose frequencies are close to structure resonant frequencies. This system can be used as a charge qubit where the logical states are defined by the lowest two energy states of the remaining valence electron localized around one or another donor. The quantum operations are performed via resonant or Raman-like transitions between the localized (qubit) states and the excited states delocalized over the structure, combined with phase shifts between qubit states generated by voltage pulses. The possibility of realization of arbitrary single-qubit rotations is demonstrated.

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“…Li et al [47] proposed a scheme for realizing the all-optical quantum gate in a SQD system. Moveover, several interesting phenomena have been recognized when the SQD structure contains one or two electrons, such as controlled transfer of electrons between two SQDs [49,50] and entanglement in two-electron SQD systems [51,52], and so on. SQD therefore offers a feasible platform for realization of many quantum-information processes.…”

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confidence: 99%

Voltage-controlled entanglement and quantum-information transfer between spatially separated quantum-dot molecules

Lü

Zheng

et al. 2011

Phys. Rev. A

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We propose two schemes for generating entanglement and quantum state transfer (QST) between two spatially separated semiconductor quantum dot molecules (QDMs) based on the voltagecontrolled tunneling effects. In the present schemes, two QDMs are trapped into two spatially separated cavities connected by a fiber, respectively. By numerically simulating the evolution of system, we show that the generation of entanglement and QST can be controlled by an external gate voltage in our schemes. Moreover, proposed schemes are robust against noise of system parameters.

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Entanglement and quantum-state engineering in the optically driven two-electron double-dot structure

Cited by 28 publications

References 48 publications

Rabi oscillations in the four-level double-dot structure under the influence of the resonant pulse

Rabi oscillations in the four-level double-dot structure under the influence of the resonant pulse

Single-qubit operations in the double-donor structure driven by optical and voltage pulses

Voltage-controlled entanglement and quantum-information transfer between spatially separated quantum-dot molecules

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