A simple all-microwave entangling gate for fixed-frequency superconducting qubits

Jerry M. Chow; A. D. Corcoles; Jay M. Gambetta; Chad Rigetti; B. R. Johnson; John A. Smolin; J. R. Rozen; George A. Keefe; Mary B. Rothwell; Mark B. Ketchen; M. Steffen

doi:10.1103/PhysRevLett.107.080502

A simple all-microwave entangling gate for fixed-frequency superconducting qubits

Quantum Physics 2011-09-19 v1 Mesoscale and Nanoscale Physics

Authors: Jerry M. Chow , A. D. Corcoles , Jay M. Gambetta , Chad Rigetti , B. R. Johnson , John A. Smolin , J. R. Rozen , George A. Keefe , Mary B. Rothwell , Mark B. Ketchen , M. Steffen

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Abstract

We demonstrate an all-microwave two-qubit gate on superconducting qubits which are fixed in frequency at optimal bias points. The gate requires no additional subcircuitry and is tunable via the amplitude of microwave irradiation on one qubit at the transition frequency of the other. We use the gate to generate entangled states with a maximal extracted concurrence of 0.88 and quantum process tomography reveals a gate fidelity of 81%.

Keywords

quantum gates and qubits superconducting qubits circuit quantum electrodynamics

Cite

@article{arxiv.1106.0553,
  title  = {A simple all-microwave entangling gate for fixed-frequency superconducting qubits},
  author = {Jerry M. Chow and A. D. Corcoles and Jay M. Gambetta and Chad Rigetti and B. R. Johnson and John A. Smolin and J. R. Rozen and George A. Keefe and Mary B. Rothwell and Mark B. Ketchen and M. Steffen},
  journal= {arXiv preprint arXiv:1106.0553},
  year   = {2011}
}

A simple all-microwave entangling gate for fixed-frequency superconducting qubits

Abstract

Keywords

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