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Fast gates and mixed-species entangl...

Schafer, Vera M.

Fast gates and mixed-species entanglement with trapped ions

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fast gates and mixed-species entanglement with trapped ionsby Vera M. Schafer.
Author:	Schafer, Vera M.
Published:	Cham :Springer International Publishing :2020.
Description:	xvi, 155 p. :ill., digital ;24 cm.
Contained By:	Springer eBooks
Subject:	Quantum entanglement.
Online resource:	https://doi.org/10.1007/978-3-030-40285-3
ISBN:	9783030402853$q(electronic bk.)

Fast gates and mixed-species entanglement with trapped ions
Schafer, Vera M.

Fast gates and mixed-species entanglement with trapped ions[electronic resource] /by Vera M. Schafer. - Cham :Springer International Publishing :2020. - xvi, 155 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- The Ions -- Theory -- Apparatus -- Experiment Characterisation -- Mixed Species Gates -- Fast Gates -- Conclusion -- Appendix.

Quantum logic gates are the crucial information-processing operation of quantum computers. Two crucial performance metrics for logic gates are their precision and speed. Quantum processors based on trapped ions have always been the touchstone for gate precision, but have suffered from slow speed relative to other quantum logic platforms such as solid state systems. This thesis shows that it is possible to accelerate the logic "clock speed" from kHz to MHz speeds, whilst maintaining a precision of 99.8%. This is almost as high as the world record for conventional trapped-ion gates, but more than 20 times faster. It also demonstrates entanglement generation in a time (480ns) shorter than the natural timescale of the ions' motion in the trap, which starts to probe an interesting new regime of ion trap physics. In separate experiments, some of the first "mixed-species" quantum logic gates are performed, both between two different elements, and between different isotopes. The mixed-isotope gate is used to make the first test of the quantum-mechanical Bell inequality between two different species of isolated atoms.

ISBN: 9783030402853$q(electronic bk.)

Standard No.: 10.1007/978-3-030-40285-3doiSubjects--Topical Terms:

738362
Quantum entanglement.

LC Class. No.: QC174.17.E58 / S386 2020

Dewey Class. No.: 539.725

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505 0 $a Introduction -- The Ions -- Theory -- Apparatus -- Experiment Characterisation -- Mixed Species Gates -- Fast Gates -- Conclusion -- Appendix.
520 $a Quantum logic gates are the crucial information-processing operation of quantum computers. Two crucial performance metrics for logic gates are their precision and speed. Quantum processors based on trapped ions have always been the touchstone for gate precision, but have suffered from slow speed relative to other quantum logic platforms such as solid state systems. This thesis shows that it is possible to accelerate the logic "clock speed" from kHz to MHz speeds, whilst maintaining a precision of 99.8%. This is almost as high as the world record for conventional trapped-ion gates, but more than 20 times faster. It also demonstrates entanglement generation in a time (480ns) shorter than the natural timescale of the ions' motion in the trap, which starts to probe an interesting new regime of ion trap physics. In separate experiments, some of the first "mixed-species" quantum logic gates are performed, both between two different elements, and between different isotopes. The mixed-isotope gate is used to make the first test of the quantum-mechanical Bell inequality between two different species of isolated atoms.
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