Results 31 to 40 of about 2,852,312 (350)

Phase Shifts in Stochastic Resonance [PDF]

open access: yesPhysical Review Letters, 1992
The response of an overdamped bistable system to a periodic force is investigated using linear-response theory and by analog electronic experiment. It is shown, both theoretically and experimentally that a phase lag phi exists between the force and the response, and that |phi| passes through a maximum when the noise intensity is tuned through the range
DYKMAN MI   +3 more
openaire   +3 more sources

Performance of Equal Phase-Shift Search for One Iteration

open access: yes, 2007
Grover presented the phase-shift search by replacing the selective inversions by selective phase shifts of $\pi /3$. In this paper, we investigate the phase-shift search with general equal phase shifts.
144   +13 more
core   +1 more source

Super sensitivity and super resolution with quantum teleportation [PDF]

open access: yes, 2018
We propose a method for quantum enhanced phase estimation based on continuous variable (CV) quantum teleportation. The phase shift probed by a coherent state can be enhanced by repeatedly teleporting the state back to interact with the phase shift again ...
Andersen, Ulrik L.   +3 more
core   +4 more sources

Design of a Branch-line Microstrip Coupler Using Spirals and Step Impedance Cells for WiMAX Applications

open access: yesARO-The Scientific Journal of Koya University, 2020
branch-line microstrip coupler is designed and fabricated in this paper. The proposed coupler operates at 3 GHz, which is suitable for WiMAX applications.
Sayed M. Hosseini, Abbas Rezaei
doaj   +1 more source

High SNR BER Comparison of Coherent and Differentially Coherent Modulation Schemes in Lognormal Fading Channels

open access: yes, 2014
Using an auxiliary random variable technique, we prove that binary differential phase-shift keying and binary phase-shift keying have the same asymptotic bit-error rate performance in lognormal fading channels.
Alouini, Mohamed-Slim   +2 more
core   +1 more source

Geometric phase for a dimerized disordered continuum: Topological shot noise [PDF]

open access: yes, 1998
Geometric phase shift associated with an electron propagating through a dimerized-disordered continuum is shown to be 0, or $\pm \pi$ (modulo 2$\pi$), according as the associated circuit traversed in the two-dimensional parameter space excludes, or ...
Berry M. V.   +4 more
core   +2 more sources

Light sets the brain’s daily clock by regional quickening and slowing of the molecular clockworks at dawn and dusk

open access: yeseLife, 2021
How daily clocks in the brain are set by light to local environmental time and encode the seasons is not fully understood. The suprachiasmatic nucleus (SCN) is a central circadian clock in mammals that orchestrates physiology and behavior in tune with ...
Suil Kim, Douglas G McMahon
doaj   +1 more source

Four-phase differential phase shift resolver [PDF]

open access: yes, 1973
Two systems have been developed to resolve phase uncertainty without transmitting reference signals. In both methods signal is impressed on carrier as differential, rather than absolute, phase shift.
Hopkins, P. M., Wallingford, W. M.
core   +1 more source

Optical interferometry in the presence of large phase diffusion [PDF]

open access: yes, 2011
Phase diffusion represents a crucial obstacle towards the implementation of high precision interferometric measurements and phase shift based communication channels.
Brivio, Davide   +7 more
core   +3 more sources

Momentum Dependence of Phase Shifts [PDF]

open access: yesPhysical Review, 1955
A lower limit is found for the momentum derivative of the scattering phase shifts of a relativistic neutral two-particle system when the interaction is of finite range.
Goebel, Charles J.   +2 more
openaire   +2 more sources

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