Quantum metrology with quantum-chaotic sensors
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-03623-z
Abstract: Quantum metrology promises high-precision measurements of classical parameters with far reaching implications for science and technology. So far, research has concentrated almost exclusively on quantum-enhancements in integrable systems, such as precessing spins or harmonic oscillators… read more here.
Keywords: quantum; quantum chaotic; chaotic sensors; metrology quantum ... See more keywords
Probe optimization for quantum metrology via closed-loop learning control
Sign Up to like & getrecommendations! Published in 2020 at "npj Quantum Information"
DOI: 10.1038/s41534-020-00292-z
Abstract: Experimentally achieving the precision that standard quantum metrology schemes promise is always challenging. Recently, additional controls were applied to design feasible quantum metrology schemes. However, these approaches generally does not consider ease of implementation, raising… read more here.
Keywords: quantum; learning control; quantum metrology; loop learning ... See more keywords
Hybrid quantum-classical approach to enhanced quantum metrology
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-020-80070-1
Abstract: Quantum metrology plays a fundamental role in many scientific areas. However, the complexity of engineering entangled probes and the external noise raise technological barriers for realizing the expected precision of the to-be-estimated parameter with given… read more here.
Keywords: hybrid quantum; quantum classical; classical approach; quantum metrology ... See more keywords
Many-body effects in quantum metrology
Sign Up to like & getrecommendations! Published in 2019 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ab1fc2
Abstract: We study the impact of many-body effects on the fundamental precision limits in quantum metrology. On the one hand such effects may lead to non-linear Hamiltonians, studied in the field of non-linear quantum metrology, while… read more here.
Keywords: body effects; many body; effects quantum; quantum metrology ... See more keywords
Nonlinear quantum metrology with moving matter-wave solitons
Sign Up to like & getrecommendations! Published in 2019 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ab398e
Abstract: The estimation of some parameters with super-Heisenberg sensitivity, i.e. beyond Heisenberg limit, is one of the principal problems for current quantum metrology. We propose to use Bose Einstein condensate (BEC) quantum bright solitons for this… read more here.
Keywords: matter wave; nonlinear quantum; metrology moving; moving matter ... See more keywords
Quantum metrology with single spins in diamond under ambient conditions
Sign Up to like & getrecommendations! Published in 2018 at "National Science Review"
DOI: 10.1093/nsr/nwx121
Abstract: The detection of single quantum systems can reveal information that would be averaged out in traditional techniques based on ensemble measurements. The nitrogen-vacancy (NV) centers in diamond have shown brilliant prospects of performance as quantum… read more here.
Keywords: single spins; ambient conditions; metrology single; quantum metrology ... See more keywords
Fault-tolerant quantum metrology
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.022335
Abstract: We introduce the notion of fault-tolerant quantum metrology to overcome noise beyond our control, associated with sensing the parameter, by reducing the noise in operations under our control, associated with preparing and measuring probes and… read more here.
Keywords: quantum metrology; tolerant quantum; fault tolerant; metrology ... See more keywords
Quantum metrology with generalized cat states
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.032318
Abstract: We show a general relationship between a superposition of macroscopically distinct states and sensitivity in quantum metrology. Generalized cat states are defined by using an index which extracts the coherence between macroscopically distinct states, and… read more here.
Keywords: cat states; sensitivity; quantum metrology; generalized cat ... See more keywords
Quantum metrology enhanced by coherence-induced driving in a cavity-QED setup
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.053825
Abstract: We propose a quantum metrology scheme in a cavity QED setup to achieve the Heisenberg limit. In our scheme, a series of identical two-level atoms randomly pass through and interact with a dissipative single-mode cavity.… read more here.
Keywords: qed setup; cavity qed; quantum metrology; cavity ... See more keywords
Bayesian multiparameter quantum metrology with limited data
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.032114
Abstract: A longstanding problem in quantum metrology is how to extract as much information as possible in realistic scenarios with not only multiple unknown parameters, but also limited measurement data and some degree of prior information.… read more here.
Keywords: metrology limited; multiparameter quantum; quantum metrology; metrology ... See more keywords
Estimating phase with a random generator: strategies and resources in multiparameter quantum metrology
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.95.062307
Abstract: Quantum metrology aims to exploit quantum phenomena to overcome classical limitations in the estimation of relevant parameters. We consider a probe undergoing a phase shift φ whose generator is randomly sampled according to a distribution… read more here.
Keywords: estimating phase; generator; phase random; quantum metrology ... See more keywords