Title

Applications Of Femtosecond Pulse Engineering In The Control Of Excitons In Quantum Dots

Keywords

Adiabatic rapid passage; Chirp; Coherent control; Exciton; Pulse shaping; Quantum control; Quantum dot; Ultrafast

Abstract

Pulse shaping techniques are used to demonstrate quantum control of exciton qubits in InAs quantum dots. Linearly chirped laser pulses are used to demonstrate adiabatic rapid passage in a single quantum dot on a subpicosecond timescale. The observed dependence of the exciton inversion efficiency on the sign of the pulse chirp identifies phonons as the dominant source of dephasing, which can be suppressed for positive chirp at low temperatures. The use of optimal quantum control theory to engineer a single optical pulse to implement simultaneous π and 2μ single qubit gates in two uncoupled quantum dots is demonstrated. This work will support the use of pulse shaping in solid-state quantum hardware.

Publication Date

1-1-2014

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

9167

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2064789

Socpus ID

84922978453 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84922978453

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