Quantum control is concerned with active manipulation of physical and chemical processes
on the atomic and molecular scale. This work presents a perspective of progress in the field …

The control of individual quantum systems is now a reality in a variety of physical settings.
Feedback control is an important class of control methods because of its ability to reduce the …

This study presents a survey on quantum control theory and applications from a control
systems perspective. Some of the basic concepts and main developments (including open …

We present a pedagogical treatment of the formalism of continuous quantum measurement.
Our aim is to show the reader how the equations describing such measurements are derived …

We study experimentally the fundamental limits of sensitivity of an atomic radio-frequency
magnetometer. First, we apply an optimal sequence of state preparation, evolution, and the …

Quantum information describes the new field which bridges quantum physics and
information science. The quantum world allows for completely new architectures and …

Feedback control of quantum mechanical systems must take into account the probabilistic
nature of quantum measurement. We formulate quantum feedback control as a problem of …

We derive a quantum Cramér-Rao bound (QCRB) on the error of estimating a time-changing
signal. The QCRB provides a fundamental limit to the performance of general quantum …

We describe a He 3-Xe 129 comagnetometer using Rb 87 atoms for noble-gas spin
polarization and detection. We use a train of Rb 87 π pulses and σ+/σ-optical pumping to …

We consider the problem of frequency estimation for a single bosonic field evolving under a
squeezing Hamiltonian and continuously monitored via homodyne detection. In particular …