Closed Loop Quantum Control and Quantum Information Sciences: Concepts and Laboratory Implementations

2007 ◽  
Author(s):  
Herschel Rabitz ◽  
Ian Walmsley ◽  
Robert Kosut
Keyword(s):  
Quantum Information ◽  
Quantum Control ◽  
Closed Loop ◽  
Information Sciences

Phase control for entanglement preparation in two-qubit systems

2005 ◽  
Vol 5 (4&5) ◽  
pp. 364-379
Author(s):  
V.S. Malinovsky ◽  
I.R. Sola
Keyword(s):  
Quantum Information ◽  
Quantum Computation ◽  
Quantum Control ◽  
Phase Control ◽  
Adiabatic Passage ◽  
Pulse Parameters ◽  
Qubit System ◽  
Phase Manipulation ◽  
Laser Control ◽  
Pi Pulses

The theory of Quantum Control is starting to lay bridges with the field of Quantum Information and Quantum Computation. Using key ideas of laser control of the dynamics by means of phase manipulation and adiabatic passage, we review laser schemes that allow entanglement preparation in a two-qubit system. The schemes are based on sequences that use four time-delayed pulses, with or without concerted decay, in or off resonance with the intermediate levels of the qubit space. We show how to control the fidelity and phase of the entanglement, as well as the sensitivity of the preparation to the different pulse parameters. In general the schemes provide an improvement in robustness and in the finesse of the control to phase, with respect to previously proposed schemes based on sequences of $\pi$ pulses.

The significance of theC-numerical range and the localC-numerical range in quantum control and quantum information

2008 ◽  
Vol 56 (1-2) ◽  
pp. 3-26 ◽  
Author(s):  
Thomas Schulte-herbrüggen ◽  
Gunther Dirr ◽  
Uwe Helmke ◽  
Steffen J. Glaser
Keyword(s):  
Quantum Information ◽  
Quantum Control ◽  
Numerical Range

Closed-loop quantum control utilizing time domain maps

2003 ◽  
Vol 290 (1) ◽  
pp. 35-45 ◽  
Author(s):  
Julie S Biteen ◽  
J.M Geremia ◽  
Herschel Rabitz
Keyword(s):  
Time Domain ◽  
Quantum Control ◽  
Closed Loop

scholarly journals Emerging Microscopy for Quantum Information Sciences

2019 ◽  
Vol 25 (S2) ◽  
pp. 928-929
Author(s):  
Qiao Qiao ◽  
Lijun Wu ◽  
Jun Li ◽  
Shaobo Cheng ◽  
Myung-Geun Han ◽  
...  
Keyword(s):  
Quantum Information ◽  
Information Sciences

scholarly journals Genuine quantum networks with superposed tasks and addressing

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
J. Miguel-Ramiro ◽  
A. Pirker ◽  
W. Dür
Keyword(s):  
Quantum Information ◽  
Quantum Control ◽  
Coherent Control ◽  
Quantum Superposition ◽  
Quantum Networks ◽  
Target State

AbstractWe show how to make quantum networks, both standard and entanglement-based, genuine quantum by providing them with the possibility of handling superposed tasks and superposed addressing. This extension of their functionality relies on a quantum control register, which specifies not only the task of the network, but also the corresponding weights in a coherently superposed fashion. Although adding coherent control to classical tasks, such as sending or measuring—or not doing so—is in general impossible, we introduce protocols that are able to mimick this behavior under certain conditions. We achieve this by always performing the classical task, either on the desired state or a properly chosen dummy state. We provide several examples, and show that externally controlling quantum superposition of tasks offers additional possibilities and advantages over usually considered single functionality. For instance, superpositions of different target state configurations shared among different nodes of the network can be prepared, or quantum information can be sent among a superposition of different paths or to different destinations.

Quantum Information and Quantum Control

2005 ◽  
Vol 5 (4&5) ◽  
pp. 723-724
Author(s):  
P. Brumer ◽  
D. Lidar ◽  
H-K Lo ◽  
A. Steinberg
Keyword(s):  
Quantum Information ◽  
Quantum Control

Editorial

scholarly journals Assessing three closed-loop learning algorithms by searching for high-quality quantum control pulses

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Xiao-dong Yang ◽  
Christian Arenz ◽  
Istvan Pelczer ◽  
Qi-Ming Chen ◽  
Re-Bing Wu ◽  
...  
Keyword(s):  
Quantum Control ◽  
Closed Loop ◽  
Learning Algorithms ◽  
High Quality

scholarly journals Quantum Control and Quantum Information Technology

2013 ◽  
Vol 2013 ◽  
pp. 1-2 ◽  
Author(s):  
Daoyi Dong ◽  
Chunlin Chen ◽  
Min Jiang ◽  
Lin-Cheng Wang
Keyword(s):  
Information Technology ◽  
Quantum Information ◽  
Quantum Control
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