Qubit lattice coherence induced by electromagnetic pulses in superconducting metamaterials

Z. Ivić, N. Lazarides, G. P. Tsironis

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    Quantum bits (qubits) are at the heart of quantum information processing schemes. Currently, solid-state qubits, and in particular the superconducting ones, seem to satisfy the requirements for being the building blocks of viable quantum computers, since they exhibit relatively long coherence times, extremely low dissipation, and scalability. The possibility of achieving quantum coherence in macroscopic circuits comprising Josephson junctions, envisioned by Legett in the 1980's, was demonstrated for the first time in a charge qubit; since then, the exploitation of macroscopic quantum effects in low-capacitance Josephson junction circuits allowed for the realization of several kinds of superconducting qubits. Furthermore, coupling between qubits has been successfully achieved that was followed by the construction of multiple-qubit logic gates and the implementation of several algorithms. Here it is demonstrated that induced qubit lattice coherence as well as two remarkable quantum coherent optical phenomena, i.e., self-induced transparency and Dicke-type superradiance, may occur during light-pulse propagation in quantum metamaterials comprising superconducting charge qubits. The generated qubit lattice pulse forms a compound "quantum breather" that propagates in synchrony with the electromagnetic pulse. The experimental confirmation of such effects in superconducting quantum metamaterials may open a new pathway to potentially powerful quantum computing.

    Original languageEnglish
    Article number29374
    JournalScientific Reports
    Volume6
    DOIs
    Publication statusPublished - Jul 12 2016

    Fingerprint

    electromagnetic pulses
    Josephson junctions
    quantum computers
    quantum computation
    exploitation
    pulses
    logic
    dissipation
    capacitance
    solid state
    requirements
    propagation

    ASJC Scopus subject areas

    • General

    Cite this

    Qubit lattice coherence induced by electromagnetic pulses in superconducting metamaterials. / Ivić, Z.; Lazarides, N.; Tsironis, G. P.

    In: Scientific Reports, Vol. 6, 29374, 12.07.2016.

    Research output: Contribution to journalArticle

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