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Homodyne Quadrature Displacement Interferometer. Experimental Results
AbstractIn the previous work [1], the results of mathematical modeling of the optical scheme of a single-pass homodyne displacement interferometer...
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Quadrature nonreciprocity in bosonic networks without breaking time-reversal symmetry
Nonreciprocity means that the transmission of a signal depends on its direction of propagation. Despite vastly different platforms and underlying...
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Features of Using the Quadrature Amplitude Modulation for Forming the Directional Pattern of an Active Phased Antenna Array
We consider technical aspects of using quadrature amplitude modulation in modern microwave active phased antenna arrays. A necessity of improving the...
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Simulation of a Homodyne Quadrature Displacement Measuring Interferometer
AbstractBased on the Jones matrix formalism, the paper describes the optical scheme of a single-pass homodyne displacement measuring interferometer...
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A Homodyne Quadrature Displacement Interferometer for the New Kilogram Mass Standard Based on the Watt Balance
AbstractIn the new Russian unit mass (kilogram) standard based on the watt balance, it is proposed to use an interferometer for measurements of...
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Pre-calibration and compensation of quadrature components in continuous-variable quantum key distribution
Quantum key distribution (QKD) can guarantee the security of key distribution through the basic principles of quantum mechanics. The theoretical...
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Photonic communications with quadrature-amplitude modulated quantum coherent states in alternated and dual polarizations
We present the analysis of the quantum detection of coherent states used in photonic communications systems that employ the dimensions of both a) the...
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Quantum-enhanced receiver for quadrature phase shift keying using conjugated homodyne detection
Coherent detection (homodyne detection/heterodyne detection) and single photon detection are commonly applied in classical communication and quantum...
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An Approximate Method for Recovering Input Signals of Measurement Transducers
We consider the problems of information-measuring equipment, modeled by ordinary differential equations, when some physical variable cannot be...
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Explainable AI based wearable electronic optical data analysis with quantum photonics and quadrature amplitude neural computing
The electrocardiogram, electroencephalogram, blood pressure, temperature, etc. are only some of the physiological signals that may be monitored using...
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The Influence of Nonlinear Phase Noise on Amplitude-Phase Channel OFDM Signals in Coherent Fiber-Optic Transmission Systems
AbstractA coherent fiber-optic transmission systems of OFDM signals is considered. The channels are formed using spectral-efficient modulation...
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Optimal wavelength conversion of 250 Gbps PDM-(DP)QPSK signals based on dual SOA using co-polarized dual pumped FWM
In this article, we demonstrate the semiconductor optical amplifier (SOA)-based wavelength conversion of 250 Gbit/s single channel polarization...
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Application of Incoherent Multi-Frequency Signals for Information Transmission in a Nonstationary Hydroacoustic Environment
Abstract —A class of digital incoherent methods of information transmission based on multi-frequency signals for mobile underwater complexes is...
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A receiver for quadrature/polarization modulated quantum coherent states in photonic communications employing the Naimark extension
This work deals with the derivation of a receiver structure for the quantum detection of information-carrying coherent states used in photonic...
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Photonics joint radar and communication system using dual-band LFM-based signals with opposite chirp polarities
A photonics joint radar and communication (JRC) system using dual-band linear frequency modulation (LFM)-based waveforms is proposed and...
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Dead Time-Free Detection of NMR Signals Using Voltage-Controlled Oscillators
In this paper, we introduce voltage-controlled oscillators (VCOs) as a new type of nuclear magnetic resonance (NMR) detector, enabling dead time-free...
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Method for Digitally Modulated Signals Synthesis with Normalized Parameters
The possibility of creating a calibrator of the parameters of signals with digital modulation, based on a signal generator of arbitrary form, was...
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Signals Recovery by the Amplitude of the Spectrum
A two-stage approximate method for recovering the phase of the signal spectrum from the amplitude of the spectrum is proposed. In the first stage,...
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Optimized decision strategy for quadrature phase-shift-keying unambiguous states discrimination
Quantum-enhanced measurement can unambiguously discriminate coherent states with accuracy beyond what is fundamentally possible with conventional...
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Comparison of Phase Extraction Methods on the Example of the PN-3 Microwave Interferometer
AbstractThe results of a study of three methods for determining the phase of signals from a heterodyne microwave interferometer are presented: phase...
