scholarly journals Higher-order spin effects in the dynamics of compact binaries. II. Radiation field

2006 ◽  
Vol 74 (10) ◽  
Author(s):  
Luc Blanchet ◽  
Alessandra Buonanno ◽  
Guillaume Faye
Keyword(s):  
Radiation Field ◽  
Higher Order ◽  
Compact Binaries ◽  
Spin Effects

scholarly journals Time-domain effective-one-body gravitational waveforms for coalescing compact binaries with nonprecessing spins, tides, and self-spin effects

2018 ◽  
Vol 98 (10) ◽  
Author(s):  
Alessandro Nagar ◽  
Sebastiano Bernuzzi ◽  
Walter Del Pozzo ◽  
Gunnar Riemenschneider ◽  
Sarp Akcay ◽  
...  
Keyword(s):  
Time Domain ◽  
Compact Binaries ◽  
Spin Effects

nTH-ORDER AMPLITUDE SQUEEZING EFFECTS OF RADIATION IN MULTIPHOTON PROCESSES

2006 ◽  
Vol 20 (16) ◽  
pp. 2265-2281 ◽  
Author(s):  
DILIP KUMAR GIRI ◽  
P. S. GUPTA
Keyword(s):  
Radiation Field ◽  
Quantum Effect ◽  
Equations Of Motion ◽  
Photon Number ◽  
Zero Point ◽  
Optical Signal ◽  
Higher Order ◽  
Quantum Mechanical ◽  
Mixing Processes ◽  
Photon Process

Squeezing of the electromagnetic field is a purely quantum mechanical phenomenon and this quantum effect is expected to manifest itself in optical processes in which the nonlinear response of the system to the radiation field plays an important role. It has generated a great deal of interest in view of the possibility of reducing the noise of an optical signal below the vacuum limit i.e. zero-point oscillations. In this paper the concept of nth-order amplitude squeezing is introduced in the fundamental mode in four- and six-wave mixing processes as a generalization of the higher-order squeezing under short-time approximation based on a fully quantum mechanical approach. It established the coupled Heisenberg equations of motion involving real and imaginary parts of the quadrature operators. The condition for occurrence of nth-order squeezing is obtained from which higher-order squeezing upto n=3 are studied. Dependence of squeezing on photon number is also established. The conditions for obtaining maximum and minimum squeezing are obtained. The method of present investigation can be applied to any higher-order non-linear optical processes and the technique can also be extended for studying squeezing in any N-photon process in general. Further, nth-order squeezing of radiation in N-photon process can also be investigated. The results obtained may help in selecting a suitable process to generate optimum squeezing in the radiation field.

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