Input-output theory for spin-photon coupling in Si double quantum dots

M. Benito, X. Mi, J. M. Taylor, J. R. Petta, Guido Burkard

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The interaction of qubits via microwave frequency photons enables long-distance qubit-qubit coupling and facilitates the realization of a large-scale quantum processor. However, qubits based on electron spins in semiconductor quantum dots have proven challenging to couple to microwave photons. In this theoretical work we show that a sizable coupling for a single electron spin is possible via spin-charge hybridization using a magnetic field gradient in a silicon double quantum dot. Based on parameters already shown in recent experiments, we predict optimal working points to achieve a coherent spin-photon coupling, an essential ingredient for the generation of long-range entanglement. Furthermore, we employ input-output theory to identify observable signatures of spin-photon coupling in the cavity output field, which may provide guidance to the experimental search for strong coupling in such spin-photon systems and opens the way to cavity-based readout of the spin qubit.

Original languageEnglish (US)
Article number235434
JournalPhysical Review B
Volume96
Issue number23
DOIs
StatePublished - Dec 22 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Input-output theory for spin-photon coupling in Si double quantum dots'. Together they form a unique fingerprint.

  • Cite this