Principles and applications of quantum control engineering
John E. Gough
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John E. Gough Institute of Mathematics and Physics, Aberystwyth University
,
Aberystwyth, Ceredigion SY23 3BZ
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UK
E-mail address:
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Principles and applications of quantum control
engineering
This issue contains papers presented at the Theo Murphy Discussion Meeting
Principles and applications of quantum control engineering held at the Kavli Royal
Society International Centre, Chicheley Hall, 1213 December 2011.
There has been a growing realization among scientists and engineers that
we are witnessing the birth of a new industrial revolution based on quantum
technologies. The main drivers for this have been the unrelenting trend of
miniaturization, and the goal of exploiting quantum resources for computation
and information processing. However, major advances have been made in areas
such as nanotechnology, quantum chemistry, high-precision metrology, coherent
opto-mechanics and electromagnetic circuits, etc., which have contributed to the
growth of quantum engineering as a discipline deserving specific attention. To
date, there have been many pioneering developments, both experimentally and
theoretically, but it is fair to say that we are still at an early stage in the
history of quantum technology, and that only time will tell which of several
competing approaches and methodologies will emerge as the industry standards of
the future.
Nevertheless, it has proved fruitful to look at the world of classical control
engineering as a guide to future quantum technologies. Indeed, it now seems
necessary to have a dedicated theory of quantum control, not just owing
to the dynamical nature of quantum systems, but also to formulate the
design problems specific to achieving the performance criteria desired of
quantum systems. This meeting brought together several international experts
working on quantum control, either as experimentalists who have directly
applied control concepts, or as theoreticians who have developed modelling
approaches for quantum control problems. The emphasis has been on the
systematic development of quantum control as the engineering discipline that
will guide emerging quantum technologies. The main applications covered, or
suggested, include open-loop quantum control, adaptive feedback (quantum
chemistry), real-time quantum feedback using measurement and filtering, and
coherent control for closed-loop self-regulating system-controller models. The
topics covered at the meeting include: rapid purification of quantum systems
by measurement and control, controlling the lightmatter interface, quantum
filtering for systems driven by fields in non-classical input states, stabilization
of quantum systems using quantum governors, pure Gaussian state and
One contribution of 15 to a Theo Murphy Meeting Issue Principles and applications of quantum
control engineering.
entanglement generation; characterization and estimation of quantum systems;
quantum systems identification, model reduction and synthesis with quantum
feedback networks and quantum-coherent feedback in photonic circuits.
In addition to the proceedings contained in this issue, each of the talks
concluded with an extended discussion session and these are available as audio
downloads from the webpage:
http://royalsociety.org/events/2011/quantumcontrol-engineering/
The organizing committee thank all those who participated in and contributed to the meeting, and
to the Kavli Royal Society International Centre for kind support in hosting this event.
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