Accession Number:

AD1084316

Title:

Microwave-Activated Conditional-Phase Gate for Superconducting Qubits

Descriptive Note:

Journal Article - Open Access

Corporate Author:

IBM T J Watson Research Center Yorktown Heights United States

Report Date:

2013-11-19

Pagination or Media Count:

10.0

Abstract:

We introduce a new entangling gate between two fixed-frequency qubits statically coupled via a microwave resonator bus which combines the following desirable qualities all-microwave control, appreciable qubit separation for reduction of crosstalk and leakage errors and the ability to function as a two-qubit conditional-phase gate. A fixed, always-on interaction is explicitly designed between higher energy non-computational states of two transmon qubits, and then a conditional-phase gate is activated on the otherwise unperturbed qubit subspace via a microwave drive. We implement this microwave-activated conditional-phase gate with a fidelity from quantum process tomography of approx. 87.

Subject Categories:

  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE