scholarly journals Minimum Total Noise in Wave-Mixing Processes

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Savita Gill ◽  
Sunil Rani ◽  
Nafa Singh
Keyword(s):  
Large Amplitude ◽  
Higher Order ◽  
Field Amplitude ◽  
Wave Mixing ◽  
Squeezed State ◽  
Nonclassical States ◽  
Mixing Processes ◽  
Amplitude Fluctuations ◽  
Total Noise ◽  
Field State

Higher-order squeezing in different optical processes such as seven-wave mixing and five-wave mixing has been studied. The total noise of a field state is a measure of the fluctuations of the field amplitude. It is shown that the minimum total noise (Tmin) of a higher-order squeezed state always increases with the increase in nonclassicality associated with higher-order squeezing. Thus, fromTmin, one can conclude that highly nonclassical states have large amplitude fluctuations.

scholarly journals GENERATION OF HIGHER ORDER NONCLASSICAL STATES VIA AN INTENSE ELECTROMAGNETIC FIELD

2006 ◽  
Vol 20 (11n13) ◽  
pp. 1421-1427 ◽  
Author(s):  
ANIRBAN PATHAK
Keyword(s):  
Anharmonic Oscillator ◽  
Higher Order ◽  
Intense Laser ◽  
Squeezed State ◽  
Order Operator ◽  
Nonclassical States ◽  
Third Order ◽  
Operator Solution ◽  
First Order ◽  
Model Hamiltonian

Interaction of intense laser beam with an inversion symmetric third order nonlinear medium is modeled as a quartic anharmonic oscillator. A first order operator solution of the model Hamiltonian is used to study the possibilities of generation of higher order nonclassical states. It is found that the higher order squeezed and higher order antibunched states can be produced by this interaction. It is also shown that the higher order nonclassical states may appear separately, i.e. a higher order antibunched state is not essentially higher order squeezed state and vice versa.

scholarly journals Higher-Order Amplitude Squeezing in Six-Wave Mixing Process

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Sunil Rani ◽  
Jawahar Lal ◽  
Nafa Singh
Keyword(s):  
Fundamental Mode ◽  
Signal To Noise Ratio ◽  
Photon Number ◽  
Higher Order ◽  
Field Amplitude ◽  
Fourth Power ◽  
Wave Mixing ◽  
Mixing Process ◽  
Signal To Noise ◽  
Noise Ratio

We investigate theoretically the generation of squeezed states in spontaneous and stimulated six-wave mixing process quantum mechanically. It has been found that squeezing occurs in field amplitude, amplitude-squared, amplitude-cubed, and fourth power of field amplitude of fundamental mode in the process. It is found to be dependent on coupling parameter “g” (characteristics of higher-order susceptibility tensor) and phase values of the field amplitude under short-time approximation. Six-wave mixing is a process which involves absorption of three pump photons and emission of two probe photons of the same frequency and a signal photon of different frequency. It is shown that squeezing is greater in a stimulated interaction than the corresponding squeezing in spontaneous process. The degree of squeezing depends upon the photon number in first and higher orders of field amplitude. We study the statistical behaviour of quantum field in the fundamental mode and found it to be sub-Poissonian in nature. The signal-to-noise ratio has been studied in different orders. It is found that signal-to-noise ratio is higher in lower orders. This study when supplemented with experimental observations offers possibility of improving performance of many optical devices and optical communication networks.

Higher-order squeezing in three- and four-wave mixing processes with loss

1992 ◽  
Vol 46 (3) ◽  
pp. 1586-1593 ◽  
Author(s):  
J. J. Gong ◽  
P. K. Aravind
Keyword(s):  
Four Wave Mixing ◽  
Higher Order ◽  
Wave Mixing ◽  
Mixing Processes

Degenerate four-wave mixing as a possible source of squeezed-state light

1984 ◽  
Vol 30 (1) ◽  
pp. 343-353 ◽  
Author(s):  
Roy S. Bondurant ◽  
Prem Kumar ◽  
Jeffrey H. Shapiro ◽  
Mari Maeda
Keyword(s):  
Four Wave Mixing ◽  
Wave Mixing ◽  
Squeezed State ◽  
Degenerate Four Wave Mixing

SQUEEZING AND PHOTON STATISTICS IN FIVE-WAVE MIXING PROCESS

2009 ◽  
Vol 23 (22) ◽  
pp. 2681-2693 ◽  
Author(s):  
SUNIL RANI ◽  
JAWAHAR LAL ◽  
NAFA SINGH
Keyword(s):  
Fundamental Mode ◽  
Coupling Parameter ◽  
Photon Number ◽  
Field Amplitude ◽  
Photon Statistics ◽  
Squeezed States ◽  
Wave Mixing ◽  
Quantum Field ◽  
Mixing Process ◽  
Signal Photon

We investigate theoretically the generation of squeezed states in spontaneous and stimulated five-wave mixing process. It has been found that squeezing occurs in field amplitude, amplitude-squared, amplitude-cubed and fourth-order amplitude states of the fundamental mode in the process. It is found to be dependent on coupling parameter g and phase values of the field amplitude of the fundamental mode. The process involves the absorption of two pump photons each having frequency ω1, emission of two probe photons of same frequency ω2 and a signal photon of frequency ω3. It is shown that squeezing is greater in a stimulated interaction than the corresponding squeezing in the spontaneous process. It is found that the degree of squeezing depends on the photon number in the first and higher orders. We study the statistical behaviour of quantum field in the fundamental mode. It has been found that the field shows sub-Poissonian behavior in this mode.

Analysis of output beam polarization in higher-order self diffraction via two-wave mixing in BSO crystal

Optik ◽  
2013 ◽  
Vol 124 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Neha Katyal ◽  
Natasha ◽  
Amitava Roy ◽  
Avinashi Kapoor
Keyword(s):  
Higher Order ◽  
Beam Polarization ◽  
Wave Mixing ◽  
Output Beam ◽  
Two Wave Mixing

Theory of rotational linestrengths for resonant four-wave-mixing processes in gaseous media with application to CARS

1993 ◽  
Vol 169 (1) ◽  
pp. 113-128 ◽  
Author(s):  
Ilse Aben ◽  
Wim Ubachs ◽  
Gert van der Zwan ◽  
Wim Hogervorst
Keyword(s):  
Four Wave Mixing ◽  
Wave Mixing ◽  
Mixing Processes ◽  
Gaseous Media

Phase Matching of 2-Photon Resonant 4-Wave Mixing Processes

1977 ◽  
pp. 344-354
Author(s):  
G. C. Bjorklund ◽  
J. E. Bjorkholm ◽  
R. R. Freeman ◽  
P. F. Liao
Keyword(s):  
Phase Matching ◽  
Wave Mixing ◽  
Mixing Processes
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