Weak probe readout of coherent impurity orbital superpositions in silicon

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
Subjects :	Electronic Engineering
Divisions :	Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute
Authors :	Name Email ORCID Litvinenko, Konstantin K.Litvinenko@surrey.ac.uk UNSPECIFIED Greenland, PT UNSPECIFIED UNSPECIFIED Redlich, B UNSPECIFIED UNSPECIFIED Pidgeon, CR UNSPECIFIED UNSPECIFIED Aeppli, G UNSPECIFIED UNSPECIFIED Murdin, Benedict B.Murdin@surrey.ac.uk UNSPECIFIED
Date :	20 December 2016
Identification Number :	10.1103/PhysRevB.94.235207
Copyright Disclaimer :	Copyright 2016 American Physical Society
Related URLs :	Publisher
Depositing User :	Symplectic Elements
Date Deposited :	09 Dec 2016 18:30
Last Modified :	07 Jul 2017 11:40
URI:	http://epubs.surrey.ac.uk/id/eprint/813088

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