On Measuring Coherence in Coupled Dangling-Bond Pair Dynamics Zahra Shaterzadeh-Yazdi International Iran Conference on Quantum Information 2014 09 September.

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On Measuring Coherence in Coupled Dangling-Bond Pair Dynamics Zahra Shaterzadeh-Yazdi International Iran Conference on Quantum Information September 2014

Characterizing the rate and coherence of single-electron tunnelling between two dangling bonds on the surface of silicon Z. Shaterzadeh-Yazdi, L. Livadaru, M. Taucer, J. Slater, J. Pitters, R. Wolkow, B. Sanders Physical Review B, 89, (2014) Characterizing the rate and coherence of single-electron tunnelling between two dangling bonds on the surface of silicon Z. Shaterzadeh-Yazdi, L. Livadaru, M. Taucer, J. Slater, J. Pitters, R. Wolkow, B. Sanders Physical Review B, 89, (2014)

Outline Introduction: what is a dangling bond (DB)? Motivation: why studying coupled-DB pairs? On measuring coherence in dangling-bond pair dynamics Results Summary and future direction e

What is a Dangling Bond?

p Dangling Bond on H-Si(100)-2x1 Surface P DB 1/71/7 Si-Si Dimer P

A Surface DB as a Quantum Dot 2/72/7

Motivation: Why Studying Coupled-DB Pairs? DBP - as a dynamic-charge defect for Si-based electronic devices DBP - as a dynamic-charge defect for Si-based electronic devices DBP - and functionality of the Si surface: its effect on bonding of the DBP - and functionality of the Si surface: its effect on bonding of the atomic and molecular species on the Si surface atomic and molecular species on the Si surface DBP - as a potential candidate for charge qubit or an intercessor for DBP - as a potential candidate for charge qubit or an intercessor for spin-qubit measurement in quantum computation spin-qubit measurement in quantum computation Developing an understanding of the coherence and bonding of coupled dangling-bond pairs on H-Si(100)-2x1 surface 3/73/7

Dangling-bond charge qubit on a silicon surface New Journal of Physics 12, (2010) Dangling-bond charge qubit on a silicon surface New Journal of Physics 12, (2010) DBP - 4/74/7

On Measuring Coherence in Coupled Dangling-Bond Pair Dynamics e

R L MIR field Effect of applied bias Effect of MIR driving field AFM & Atomic Force Microscope 5/7

Extracting DBP - Tunneling and Decoherence Rates 6/7

Summary and Future Work V V e v v MIR field 7/7 e Z. Shaterzadeh-Yazdi et al. Phys. Rev. B, 89, (2014)