Simultaneous Deterministic Control of Distant Qubits in Two Semiconductor Quantum Dots

In optimal quantum control (OQC), a target quantum state of matter is achieved by tailoring the phase and amplitude of the control Hamiltonian through femtosecond pulse-shaping techniques and powerful adaptive feedback algorithms. Motivated by recent applications of OQC in quantum information scienc...

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Bibliographic Details
Published in:Nano letters 2013-10, Vol.13 (10), p.4666-4670
Main Authors: Gamouras, A, Mathew, R, Freisem, S, Deppe, D. G, Hall, K. C
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Classical and quantum physics: mechanics and fields
Cross-disciplinary physics: materials science
rheology
Electronics
Exact sciences and technology
Feedback
Gates
Materials science
Molecular electronics, nanoelectronics
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanostructure
Optimization
Physics
Quantum dots
Quantum information
Qubits (quantum computing)
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Semiconductors
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Summary:In optimal quantum control (OQC), a target quantum state of matter is achieved by tailoring the phase and amplitude of the control Hamiltonian through femtosecond pulse-shaping techniques and powerful adaptive feedback algorithms. Motivated by recent applications of OQC in quantum information science as an approach to optimizing quantum gates in atomic and molecular systems, here we report the experimental implementation of OQC in a solid-state system consisting of distinguishable semiconductor quantum dots. We demonstrate simultaneous high-fidelity π and 2π single qubit gates in two different quantum dots using a single engineered infrared femtosecond pulse. These experiments enhance the scalability of semiconductor-based quantum hardware and lay the foundation for applications of pulse shaping to optimize quantum gates in other solid-state systems.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl4018176