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This article is cited in 3 scientific papers (total in 3 papers)
Quantum Technologies
Charge qubit under optical control in a thin semiconductor slab
A. V. Tsukanov, I. Yu. Kateev Insitute of Physics and Technology, Institution of Russian Academy of Sciences, Moscow
Abstract:
The dynamics of a single-electron double quantum dot (charge qubit) in an optical microcavity has been theoretically analysed taking into account the influence of optical and acoustic phonons. The Lamb modes of a two-dimensional mechanical resonator (thin slab) are considered as an example of an acoustic phonon subsystem. It is found that an optical phonon mode can be used as a qubit control tool, similar to the microcavity photon one. The probability of the quantum operation 'NOT' has been calculated for two qubit control scenarios: in the microcavity photon field and in the combined photon–phonon field of a microcavity and slab. It is shown that the coherent energy exchange between a qubit and a set of acoustic phonon modes reduces this probability, which depends on the number of modes, the initial state of the phonon field, and the decay rate of modes.
Keywords:
quantum computer, qubit, quantum dot, microcavity, acoustic phonons.
Received: 11.04.2018 Revised: 16.07.2018
Citation:
A. V. Tsukanov, I. Yu. Kateev, “Charge qubit under optical control in a thin semiconductor slab”, Kvantovaya Elektronika, 48:11 (2018), 1009–1015 [Quantum Electron., 48:11 (2018), 1009–1015]
Linking options:
https://www.mathnet.ru/eng/qe16920 https://www.mathnet.ru/eng/qe/v48/i11/p1009
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