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Coherent quantum state storage and transfer between two phase qubits via a resonant cavity

Author

Listed:
  • Mika A. Sillanpää

    (National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA)

  • Jae I. Park

    (National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA)

  • Raymond W. Simmonds

    (National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA)

Abstract

Catching the quantum bus Microfabricated superconducting circuit elements can harness the power of quantum behaviour for information processing. Unlike classical information bits, quantum information bits (qubits) can form superpositions or mixture states of ON and OFF, offering a faster, natural form of parallel processing. Previously, direct qubit–qubit coupling has been achieved for up to four qubits, but now two independent groups demonstrate the next crucial step: communication and exchange of quantum information between two superconducting qubits via a quantum bus, in the form of a resonant cavity formed by a superconducting transmission line a few millimetres long. Using this microwave cavity it is possible to store, transfer and exchange quantum information between two quantum bits. It can also perform multiplexed qubit readout. This basic architecture lends itself to expansion, offering the possibility for the coherent interaction of many superconducting qubits. The cover illustrates a zig-zag-shaped resonant cavity or quantum bus linking two superconducting phase qubits.

Suggested Citation

  • Mika A. Sillanpää & Jae I. Park & Raymond W. Simmonds, 2007. "Coherent quantum state storage and transfer between two phase qubits via a resonant cavity," Nature, Nature, vol. 449(7161), pages 438-442, September.
    • Handle: RePEc:nat:nature:v:449:y:2007:i:7161:d:10.1038_nature06124
    DOI: 10.1038/nature06124
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    Cited by:

    1. Longlong Yang & Yu Yuan & Bowen Fu & Jingnan Yang & Danjie Dai & Shushu Shi & Sai Yan & Rui Zhu & Xu Han & Hancong Li & Zhanchun Zuo & Can Wang & Yuan Huang & Kuijuan Jin & Qihuang Gong & Xiulai Xu, 2023. "Revealing broken valley symmetry of quantum emitters in WSe2 with chiral nanocavities," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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