Results 81 to 90 of about 1,418,125 (307)
Nanotube double quantum dot spin transducer for scalable quantum information processing
New Journal of Physics, 2020 One of the key challenges for the implementation of scalable quantum information processing is the design of scalable architectures that support coherent interaction and entanglement generation between distant quantum systems.
Wanlu Song +4 more
doaj +1 more source
Scientific Reports, 2023 We present the frequency stability performances of a vapor cell Rb clock based on the pulsed optically pumping (POP) technique. The clock has been developed in the frame of a collaboration between INRIM and Leonardo SpA, aiming to realize a space ...
Michele Gozzelino +6 more
doaj +1 more source
Nonlinear metrology with a quantum interface
, 2010 We describe nonlinear quantum atom-light interfaces and nonlinear quantum metrology in the collective continuous variable formalism. We develop a nonlinear effective Hamiltonian in terms of spin and polarization collective variables and show that model ...
Koschorreck M +4 more
core +1 more source
Reduction of Classical Measurement Noise via Quantum-Dense Metrology [PDF]
, 2016 Quantum-dense metrology (QDM) constitutes a special case of quantum metrology in which two orthogonal phase space projections of a signal are simultaneously sensed beyond the shot noise limit.
Ast, Melanie +2 more
core +4 more sources
Precision-guaranteed quantum metrology [PDF]
Physical Review A, 2015 Quantum metrology is a general term for methods to precisely estimate the value of an unknown parameter by actively using quantum resources. In particular, some classes of entangled states can be used to significantly suppress the estimation error. Here, we derive a formula for rigorously evaluating an upper bound for the estimation error in a general ...
openaire +2 more sources
Fidelity and Fisher information on quantum channels
New Journal of Physics, 2017 The fidelity function for quantum states has been widely used in quantum information science and frequently arises in the quantification of optimal performances for the estimation and distinguishing of quantum states.
Haidong Yuan, Chi-Hang Fred Fung
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, 2017 Quantum Metrology calculates the ultimate precision of all estimation strategies, measuring what is their root mean-square error (RMSE) and their Fisher information. Here, instead, we ask how many bits of the parameter we can recover, namely we derive an
Hassani, Majid +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Glyphosate (GLY) and its primary metabolite, aminomethylphosphonic acid (AMPA), are photodegraded using a poly(vinylidene fluoride) membrane with immobilized titanium dioxide (PVDF‐TiO2) in a continuous flow‐through operation under solar light. At optimized conditions, the PVDF‐TiO2 membrane achieved 95% GLY and 80% AMPA removal with •O2− as the ...
Phuong B. Trinh +4 more
wiley +1 more source
High Entropy Wide‐Bandgap Borates with Broadband Luminescence and Large Nonlinear Optical properties
Advanced Functional Materials, EarlyView.High‐entropy rare‐earth borates exhibit excellent nonlinear optical and broadband luminescence properties arising from multi‐component doping, chemical disorder, increased configurational entropy, and increased lattice and electronic anharmonicity. This formulation enabled us to obtain a large, environmentally stable single crystal with 3X higher laser‐
Saugata Sarker +14 more
wiley +1 more source
Multiparameter quantum critical metrology
SciPost Physics, 2022 Single parameter estimation is known to benefit from extreme sensitivity to parameter changes in quantum critical systems. However, the simultaneous estimation of multiple parameters is generally limited due to the incompatibility arising from the ...
Giovanni Di Fresco, Bernardo Spagnolo, Davide Valenti, Angelo Carollo
doaj +1 more source