Control-enhanced multiparameter quantum estimation
Most studies in multiparameter estimation assume the dynamics is fixed and focus on
identifying the optimal probe state and the optimal measurements. In practice, however …
identifying the optimal probe state and the optimal measurements. In practice, however …
[HTML][HTML] Characterization of classical Gaussian processes using quantum probes
We address the use of a single qubit as a quantum probe to characterize the properties of
classical noise. In particular, we focus on the characterization of classical noise arising from …
classical noise. In particular, we focus on the characterization of classical noise arising from …
Quantum probes for the spectral properties of a classical environment
We address the use of simple quantum probes for the spectral characterization of classical
noisy environments. In our scheme a qubit interacts with a classical stochastic field …
noisy environments. In our scheme a qubit interacts with a classical stochastic field …
Generalizable control for multiparameter quantum metrology
Quantum control can be employed in quantum metrology to improve the precision limit for
the estimation of unknown parameters. The optimal control, however, typically depends on …
the estimation of unknown parameters. The optimal control, however, typically depends on …
Uncertainty limits for quantum metrology obtained from the statistics of weak measurements
HF Hofmann - Physical Review A—Atomic, Molecular, and Optical …, 2011 - APS
Quantum metrology uses small changes in the output probabilities of a quantum
measurement to estimate the magnitude of a weak interaction with the system. The …
measurement to estimate the magnitude of a weak interaction with the system. The …
Parameter estimation with entangled photons produced by parametric down-conversion
We explore the advantages offered by twin light beams produced in parametric down-
conversion for precision measurement. The symmetry of these bipartite quantum states …
conversion for precision measurement. The symmetry of these bipartite quantum states …
Optimal conventional measurements for quantum-enhanced interferometry
A major obstacle to attaining the fundamental precision limit of phase estimation in
interferometry is the identification and implementation of the optimal measurement. Here we …
interferometry is the identification and implementation of the optimal measurement. Here we …
Characterization of classical static noise via qubit as probe
The dynamics of quantum Fisher information (QFI) of a single qubit coupled to classical
static noise is investigated. The analytical relation for QFI fixes the optimal initial state of the …
static noise is investigated. The analytical relation for QFI fixes the optimal initial state of the …
Formation of NOON states from fock-state Bose-Einstein condensates
States of the form| N〉 a| 0〉 b+| 0〉 a| N〉 b, where a and b are single-particle states—ie,
NOON states—have been used for predicting violations of local realism (Greenberger-Horne …
NOON states—have been used for predicting violations of local realism (Greenberger-Horne …
Quantum fisher information for superpositions of spin states
HN **ong, J Ma, WF Liu, X Wang - Quantum Information & Computation, 2010 - dl.acm.org
In terms of quantum Fisher information, a quantity X 2 was introduced by Pezzé andSmerzi
[Phys. Rev. Lett. 102, 100401 (2009)], which is a multiparticle entanglementmeasure, and …
[Phys. Rev. Lett. 102, 100401 (2009)], which is a multiparticle entanglementmeasure, and …