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Superlattices and Microstructures

Coherent modes in an ensemble of quantum dots generated by dynamic dipole–dipole interactions

Hideaki Matsueda

Published Dec 1, 1998• 5 citations
Publisher
DOI
10.1006/spmi.1998.0604

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Recent progress in nano-meter structure and measurements is going to provide us the freedom to domesticate fast correlations between atoms in an ensemble, manifesting them at macroscopic level. Here, we show a possibility to generate an electron coherence within an atomic ensemble, via the quantum resonance due to parity inheriting dynamic dipole-dipole interaction. We built up a realistic Hamiltonian having a combinatorial probability factors for the dynamic dipole-dipole quantum resonance. This leads to the precise simulation of the process that will actually occur in nature obeying the energy conservation law. We also show a preliminary experimental data suggestive of the dynamic dipole-dipole mode. These results lead to our proposal of solid state room temperature quantum computer, e.g. by a solid state qubit system of arrayed quantum dots designed to resist against phase errors as well as bit errors.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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Abstract Recent progress in nano‐metre structure and measurements is capable of providing us with the freedom to harness fast and seemingly weak correlations between atoms in an ensemble, manifesting them at macroscopic level. So we have investigated a prospective model of solid state integrated circuits for quantum computation, based on our coherence retentive resonance dynamic dipole–dipole interaction (RDDDI) theory. In this model, each qubit is a block consisting of an ensemble of quantum dots, and the energetics of which suggests stability up to room temperature. Here, we propose a qubit swap (∏4) gate applying our RDDDI. Moreover, integration of the ∏4 gate is proposed to form quantum circuits that can transfer a qubit state to any position within them, realizing bit reversal permutation circuits with even and odd bits, and a shuffling circuit. Copyright © 2003 John Wiley & Sons, Ltd.

International Journal of Circuit Theory and Applications•Jan 1, 2003•9 citations
Recent progress in nano-meter structure and measurements is going to provide us the freedom to domesticate fast correlations between atoms in an ensemble, manifesting them at macroscopic level. Here, we show a possibility to generate an electron coherence within an atomic ensemble, via the quantum resonance due to parity inheriting dynamic dipole-dipole interaction. We built up a realistic Hamiltonian having a combinatorial probability factors for the dynamic dipole-dipole quantum resonance. This leads to the precise simulation of the process that will actually occur in nature obeying the energy conservation law. We also show a preliminary experimental data suggestive of the dynamic dipole-dipole mode. These results lead to our proposal of solid state room temperature quantum computer, e.g. by a solid state qubit system of arrayed quantum dots designed to resist against phase errors as well as bit errors.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Abstract Recent progress in nano‐metre structure and measurements is capable of providing us with the freedom to harness fast and seemingly weak correlations between atoms in an ensemble, manifesting them at macroscopic level. So we have investigated a prospective model of solid state integrated circuits for quantum computation, based on our coherence retentive resonance dynamic dipole–dipole interaction (RDDDI) theory. In this model, each qubit is a block consisting of an ensemble of quantum dots, and the energetics of which suggests stability up to room temperature. Here, we propose a qubit swap (∏4) gate applying our RDDDI. Moreover, integration of the ∏4 gate is proposed to form quantum circuits that can transfer a qubit state to any position within them, realizing bit reversal permutation circuits with even and odd bits, and a shuffling circuit. Copyright © 2003 John Wiley & Sons, Ltd.