Driven Dynamics and Rotary Echo of a Qubit Tunably Coupled to a Harmonic Oscillator

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APS March Meeting 2013

Volume 58, Number 1

Monday–Friday, March 18–22, 2013; Baltimore, Maryland

Session A25: Superconducting Qubits: Magnetic Flux and Vortex Noise on Qubits and Resonators, Quasiparticles, and Qubit-Resonator Designs

8:00 AM–11:00 AM, Monday, March 18, 2013
Room: 327

Sponsoring Unit: GQI
Chair: Britton Plourde, Syracuse University

Abstract ID: BAPS.2013.MAR.A25.10

Abstract: A25.00010 : Driven Dynamics and Rotary Echo of a Qubit Tunably Coupled to a Harmonic Oscillator

9:48 AM–10:00 AM

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Authors:

William Oliver
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Simon Gustavsson
(Massachusetts Institute of Technology, Cambridge, Massachusetts)

Jonas Bylander
(Massachusetts Institute of Technology, Cambridge, Massachusetts)

Fei Yan
(Massachusetts Institute of Technology, Cambridge, Massachusetts)

Pol Forn-Diaz
(Massachusetts Institute of Technology, Cambridge, Massachusetts)

Vlad Bolkhovsky
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Danielle Braje
(MIT Lincoln Laboratory, Lexington, Massachusetts)

George Fitch
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Khalil Harrabi
(The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan)

Donna Lennon
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Jovi Miloshi
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Peter Murphy
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Rick Slattery
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Steven Spector
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Ben Turek
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Terry Weir
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Paul Welander
(MIT Lincoln Laboratory, Lexington, Massachusetts)

Fumiki Yoshihara
(The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan)

David Cory
(Institute for Quantum Computing and Department of Chemistry, University of Waterloo, Ontario, Canada)

Yasunobu Nakamura
(The University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan)

Terry Orlando
(Massachusetts Institute of Technology, Cambridge, Massachusetts)

We have investigated the driven dynamics of a superconducting flux qubit that is tunably coupled to a microwave resonator. We find that the qubit experiences an oscillating field mediated by off-resonant driving of the resonator, leading to strong modifications of the qubit Rabi frequency. This opens an additional noise channel, and we find that low-frequency noise in the coupling parameter causes a reduction of the coherence time during driven evolution. The noise can be mitigated with the rotary-echo pulse sequence, which, for driven systems, is analogous to the Hahn-echo sequence.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2013.MAR.A25.10

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Bulletin of the American Physical Society

APS March Meeting 2013

Volume 58, Number 1

Monday–Friday, March 18–22, 2013; Baltimore, Maryland

Session A25: Superconducting Qubits: Magnetic Flux and Vortex Noise on Qubits and Resonators, Quasiparticles, and Qubit-Resonator Designs

Abstract: A25.00010 : Driven Dynamics and Rotary Echo of a Qubit Tunably Coupled to a Harmonic Oscillator

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