Weak probe readout of coherent impurity orbital superpositions in silicon
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Litvinenko, Konstantin, Greenland, PT, Redlich, B, Pidgeon, CR, Aeppli, G and Murdin, Benedict (2016) Weak probe readout of coherent impurity orbital superpositions in silicon Physical Review B - Condensed Matter and Materials Physics, 94 (23), 235207.
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Abstract
Pump-probe spectroscopy is the most common time-resolved technique for investigation of electronic dynamics, and the results provide the incoherent population decay time T1. Here we use a modified pump-probe experiment to investigate coherent dynamics, and we demonstrate this with a measurement of the inhomogeneous dephasing time T2* for phosphorus impurities in silicon. The pulse sequence produces the same information as previous coherent all-optical (photon-echo-based) techniques but is simpler. The probe signal strength is first order in pulse area but its effect on the target state is only second order, meaning that it does not demolish the quantum information. We propose simple extensions to the technique to measure the homogeneous dephasing time T2, or to perform tomography of the target qubit.
| Item Type: | Article | |||||||||||||||||||||
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| Subjects : | Electronic Engineering | |||||||||||||||||||||
| Divisions : | Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute | |||||||||||||||||||||
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| Date : | 20 December 2016 | |||||||||||||||||||||
| Identification Number : | 10.1103/PhysRevB.94.235207 | |||||||||||||||||||||
| Copyright Disclaimer : | Copyright 2016 American Physical Society | |||||||||||||||||||||
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| Depositing User : | Symplectic Elements | |||||||||||||||||||||
| Date Deposited : | 09 Dec 2016 18:30 | |||||||||||||||||||||
| Last Modified : | 31 Oct 2017 19:00 | |||||||||||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/813088 |
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