Results 11 to 20 of about 5,908,180 (304)
Reductive quantum phase estimation [PDF]
Physical Review ResearchEstimating a quantum phase is a necessary task in a wide range of fields of quantum science. To accomplish this task, two well-known methods have been developed in distinct contexts, namely, Ramsey interferometry (RI) in atomic and molecular physics and quantum phase estimation (QPE) in quantum computing.
Nicholas J. C. Papadopoulos +3 more
openaire +5 more sources
A digital phase‐based on‐fly offset compensation method for decision feedback equalisers
IET Circuits, Devices and Systems, 2021 A low‐complexity method to reduce the offset voltage of dynamic comparators employed as samplers in decision feedback equalisers (DFE) is introduced. The authors propose the phase‐domain offset reduction technique (PORT), which leverages an all‐digital ...
Andres Amaya, Javier Ardila, Elkim Roa
doaj +1 more source
A new estimator for phase statistics
Journal of Cosmology and Astroparticle Physics, 2022 Abstract We introduce a novel statistic to probe the statistics of phases of Fourier modes in two-dimensions (2D) for weak lensing convergence field κ. This statistic contains completely independent information compared to that contained in observed power spectrum.
Munshi, D +4 more
openaire +4 more sources
Phase Estimation of Single Tones Next to Modulated Signals in the Medium Frequency R-Mode System
IEEE Access, 2022 Position, navigation, and timing information are critical to today’s infrastructures; as a result, the possibility of estimating ranges is being explored in more and more radio systems. One way to achieve this is to extend the modulation with time-
Lars Grundhofer +3 more
doaj +1 more source
Dynamic Phase Demodulation Algorithm for Phase-Sensitive OTDR With Direct Detection
IEEE Access, 2020 A dynamic phase demodulation algorithm for direct detection Φ-OTDR is proposed and experimentally demonstrated. It offers a way for single channel direct detection Φ-OTDR, which is the simplest and most cost-effective structure, to realize ...
Yi Shi +4 more
doaj +1 more source
Beyond DDMTD—Sub-Picosecond Timestamps for Asynchronous Clocks
IEEE Access, 2023 Many navigation, sensing, and time-transfer applications call for the high-precision timestamping of events that occur in different digital clock domains.
Alexander C. Utter
doaj +1 more source
Topics in estimation of quantum channels [PDF]
, 2010 A quantum channel is a mapping which sends density matrices to density matrices. The estimation of quantum channels is of great importance to the field of quantum information.
O'Loan, Caleb J.
core +2 more sources
Source bearing and steering-vector estimation using partially calibrated arrays [PDF]
, 2009 The problem of source direction-of-arrival (DOA) estimation using a sensor array is addressed, where some of the sensors are perfectly calibrated, while others are uncalibrated. An algorithm is proposed for estimating the source directions in addition to
Lu, Y., Li, M.
core +4 more sources
Positioning in a Multipath Channel Using OFDM Signals With Carrier Phase Tracking
IEEE Access, 2020 In developing a high accuracy terrestrial radio navigation system, as a complement to a global navigation satellite system (GNSS), it is recognized that the performance of time delay estimation is proportional to, and thereby limited by, the signal ...
Han Dun +2 more
doaj +1 more source
Quantum Information and Computation, 2014 We develop several algorithms for performing quantum phase estimation based on basic measurements and classical post-processing. We present a pedagogical review of quantum phase estimation and simulate the algorithm to numerically determine its scaling in circuit depth and width.
Krysta M. Svore +2 more
openaire +3 more sources