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Coupled Josephson quantum bits

Research output: Contribution to conference - Without ISBN/ISSN Conference paperpeer-review

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Standard

Coupled Josephson quantum bits. / Tsai, Jaw -Shen ; Yamamoto, T. ; Pashkin, Yu. A.; Astafiev, O. ; Nakamura, Y. .

2004.

Research output: Contribution to conference - Without ISBN/ISSN Conference paperpeer-review

Harvard

Tsai, J-S, Yamamoto, T, Pashkin, YA, Astafiev, O & Nakamura, Y 2004, 'Coupled Josephson quantum bits'. https://doi.org/10.1117/12.547408

APA

Tsai, J. -S., Yamamoto, T., Pashkin, Y. A., Astafiev, O., & Nakamura, Y. (2004). Coupled Josephson quantum bits. https://doi.org/10.1117/12.547408

Vancouver

Tsai J-S, Yamamoto T, Pashkin YA, Astafiev O, Nakamura Y. Coupled Josephson quantum bits. 2004. https://doi.org/10.1117/12.547408

Author

Tsai, Jaw -Shen ; Yamamoto, T. ; Pashkin, Yu. A. ; Astafiev, O. ; Nakamura, Y. . / Coupled Josephson quantum bits. 8 p.

Bibtex

@conference{bc644c3ed9de46caa7769fdefc7a97ee,
title = "Coupled Josephson quantum bits",
abstract = "The technologies of Josephson -junction -based qubits have been progressing rapidly, ever since its first demonstration by a superconducting charge qubit1. A variety of systems have been implemented with remarkable progress in coherence time and read -out schemes. Although the current level of this solid -state device is still not as advanced as that of the most advanced microscopic -system -based qubits, these developments, together with the potential scalability, have renewed its position as a strong candidate as a building block for the quantum computer. Recently, coherent oscillation and microwave spectroscopy in capacitively -coupled superconducting qubits have been reported. The next challenging step toward quantum computation is a realization of logic gates. Here we demonstrate a conditional gate operation using a pair of coupled superconducting charge qubits. Using a pulse technique, we prepare different input states and show that they can be transformed by controlled -NOT (C -NOT) gate operation in the amplitude of the states. Although the phase evolution during the gate operation is still to be clarified, the present results are a major step toward the realization of a universal solid -state quantum gate.",
author = "Tsai, {Jaw -Shen} and T. Yamamoto and Pashkin, {Yu. A.} and O. Astafiev and Y. Nakamura",
year = "2004",
doi = "10.1117/12.547408",
language = "English",

}

RIS

TY - CONF

T1 - Coupled Josephson quantum bits

AU - Tsai, Jaw -Shen

AU - Yamamoto, T.

AU - Pashkin, Yu. A.

AU - Astafiev, O.

AU - Nakamura, Y.

PY - 2004

Y1 - 2004

N2 - The technologies of Josephson -junction -based qubits have been progressing rapidly, ever since its first demonstration by a superconducting charge qubit1. A variety of systems have been implemented with remarkable progress in coherence time and read -out schemes. Although the current level of this solid -state device is still not as advanced as that of the most advanced microscopic -system -based qubits, these developments, together with the potential scalability, have renewed its position as a strong candidate as a building block for the quantum computer. Recently, coherent oscillation and microwave spectroscopy in capacitively -coupled superconducting qubits have been reported. The next challenging step toward quantum computation is a realization of logic gates. Here we demonstrate a conditional gate operation using a pair of coupled superconducting charge qubits. Using a pulse technique, we prepare different input states and show that they can be transformed by controlled -NOT (C -NOT) gate operation in the amplitude of the states. Although the phase evolution during the gate operation is still to be clarified, the present results are a major step toward the realization of a universal solid -state quantum gate.

AB - The technologies of Josephson -junction -based qubits have been progressing rapidly, ever since its first demonstration by a superconducting charge qubit1. A variety of systems have been implemented with remarkable progress in coherence time and read -out schemes. Although the current level of this solid -state device is still not as advanced as that of the most advanced microscopic -system -based qubits, these developments, together with the potential scalability, have renewed its position as a strong candidate as a building block for the quantum computer. Recently, coherent oscillation and microwave spectroscopy in capacitively -coupled superconducting qubits have been reported. The next challenging step toward quantum computation is a realization of logic gates. Here we demonstrate a conditional gate operation using a pair of coupled superconducting charge qubits. Using a pulse technique, we prepare different input states and show that they can be transformed by controlled -NOT (C -NOT) gate operation in the amplitude of the states. Although the phase evolution during the gate operation is still to be clarified, the present results are a major step toward the realization of a universal solid -state quantum gate.

U2 - 10.1117/12.547408

DO - 10.1117/12.547408

M3 - Conference paper

ER -