Results 41 to 50 of about 47,365 (251)

Single-Quadrature Continuous-Variable Quantum Key Distribution [PDF]

, 2015
Most continuous-variable quantum key distribution schemes are based on the Gaussian modulation of coherent states followed by continuous quadrature detection using homodyne detectors.
Andersen, Ulrik L., Gehring, Tobias, Jacobsen, Christian S.   +2 more
core   +1 more source

Maximizing the Bandwidth Efficiency of the CMS Tracker Analog Optical Links

, 2005
The feasibility of achieving faster data transmission using advanced digital modulation techniques over the current CMS Tracker analog optical link is explored.
Axer, Markus, Dris, Stefanos, Foudas, Costas, Gill, Karl, Grabit, Robert, Troska, Jan, Vasey, Francois   +6 more
core   +1 more source

Material‐Driven Neuronal Oscillators and Filters via Active Reactance in CC‐NDR and VC‐NDR Electro‐Thermal Memristors

Advanced Physics Research, EarlyView.
Active reactance in electro‐thermal memristors emerges intrinsically from rapid thermal switching of device resistance, linking current‐controlled and voltage‐controlled negative differential resistance to neuronal spiking dynamics. Opposing temperature coefficients of resistance give rise to active inductive or capacitive responses, enabling tunable ...
Fatme Jardali, Gwyneth Svatek, R. Stanley Williams, Timothy D. Brown, Patrick J. Shamberger   +4 more
wiley   +1 more source

Symbol error rate analysis for M-QAM modulated physical-layer network coding with phase errors

, 2012
Recent theoretical studies of physical-layer network coding (PNC) show much interest on high-level modulation, such as M-ary quadrature amplitude modulation (M-QAM), and most related works are based on the assumption of phase synchrony.
Huang, Y, Jamalipour, A, Song, Q, Wang, S   +3 more
core   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

Ultrahigh‐Order Harmonic Mode‐Locked Optoelectronic Oscillator

Laser &Photonics Reviews, EarlyView.
This article demonstrates a record‐breaking microwave frequency comb generator using an ultrahigh‐harmonic‐order mode‐locked optoelectronic oscillator. By integrating dual recirculating loops into a low‐coherence system, the researchers achieved a harmonic order of 956 with superior noise suppression.
Zhuoran Wang, Santiago Bernal, David V. Plant, Lawrence R. Chen   +3 more
wiley   +1 more source

Experiment towards continuous-variable entanglement swapping: Highly correlated four-partite quantum state [PDF]

, 2003
We present a protocol for performing entanglement swapping with intense pulsed beams. In a first step, the generation of amplitude correlations between two systems that have never interacted directly is demonstrated.
A. Furusawa, C. Bennett, C. Silberhorn, Christine Silberhorn, Christoph Marquardt, D. Bouwmeester, G. Giedke, G. Leuchs, Gerd Leuchs, H.J. Briegel, I. Marcikic, J. Zhang, J. Zhang, J.W. Pan, Joel Heersink, L. Duan, M. Hillery, Michael Brownnutt, N. Korolkova, N. Korolkova, Natalia Korolkova, Oliver Glöckl, P. van Loock, P. van Loock, P. van Loock, P. van Loock, Peter van Loock, Qing Pan, R. Simon, S. Schmitt, S.L. Braunstein, Stefan Lorenz, T.C. Zhang, W.P. Bowen, X. Li, Y.H. Kim   +35 more
core   +2 more sources

Quadrature amplitude modulation in modulating retroreflector system

Electronics Letters, 2003
It has been shown that the data throughput of an optical modulating retroreflector (MRR) system can be enhanced by use of spectrally efficient M-ary quadrature amplitude modulation (M-ary QAM). It has been demonstrated that this MRR system has sufficient dynamic range to support up to 64-QAM at 30 Mbit/s in a 6.75 MHz channel bandwidth.
P.G. Goetz, E.E. Funk, R. Mahon, W.S. Rabinovich, S.C. Binari   +4 more
openaire   +1 more source

Comb‐Driven Coherent Optical Transmitter for Scalable DWDM Interconnects

Laser &Photonics Reviews, EarlyView.
A comb‐driven coherent optical transmitter on a Si/SiN platform enables scalable DWDM interconnects by integrating ultra‐compact microring‐assisted modulators and interleavers. High‐baud coherent signaling achieves 400 Gb/s per wavelength and >$>$1 Tb/s multi‐channel transmission, with projected >$>$10 Tb/s per fiber, offering a path toward energy ...
Alireza Geravand, Erwan Weckenmann, Jean‐Michel Vallée, Farshid Shateri, Zibo Zheng, Simon Levasseur, Bo Yang, Jiajian Chen, Ting Wang, Zihao Wang, Leslie A. Rusch, Wei Shi   +11 more
wiley   +1 more source

Hardware-Efficient Phase Estimation for Digital Coherent Transmission With Star Constellation QAM

IEEE Photonics Journal, 2010
In order to build optical transmission systems for 100 Gb/s and above on a single wavelength division multiplexing channel, transition from quadrature phase-shift keying (QPSK) to higher quadrature amplitude modulation (QAM) formats seems to be ...
Sebastian Hoffmann, Christian Wördehoff, Ali Al-Bermani, Mohamed El-Darawy, Kidsanapong Puntsri, Ulrich Rückert, Reinhold Noé   +6 more
doaj   +1 more source