Coherent control of a flux qubit by phase-shifted resonant microwave pulses
- 9 August 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (7)
- https://doi.org/10.1063/1.2010610
Abstract
The quantum state of a flux qubit was successfully pulse controlled by using a resonant microwave. We observed Ramsey fringes by applying a pair of phase-shifted π∕2 microwave pulses without introducing detuning. With this method, the qubit state can be rotated on an arbitrary axis in the x-y plane of the Bloch sphere in a rotating frame. We successfully observed qubit Larmor precession stroboscopically with an angular velocity of 2π×11.4Grad∕s. In combination with Rabi pulses, this method enables us to achieve full control of single qubit rotation with shorter operation time.Keywords
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