Method of generation of two electromagnetic modes using squeezer

Details Method of generation of two electromagnetic modes using squeezer Method of generation of two electromagnetic modes using squeezer

1993-05-17

1994-10-04

Healy, Brian

Optical waveguides

With optical coupler

Particular coupling function

385 28, 385 3, 385 24, 385 42, 359115, 359116, G02B 610

Patent

active

053533623

ABSTRACT:
A device, referred to as a covmuter, transforms two initial electromagnetic modes into two final ones. The probabilistic fluctuations of the amplitudes of the initial pair of modes are characterized by an initial covariance matrix. Similarly, the final pair of modes is attributed a final covariance matrix. We show how a covmuter can be used to produce a final pair of modes possessing any desired covariance matrix. We also show how a covmuter can be used to measure the covariance matrix of any initial pair of modes. Simplified covmuter devices that result from omitting some of the components of the covmuter and some uses of such simplified covmuters are also presented. The invention applies both in the quantum mechanical and classical regimes.

REFERENCES:
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patent: 4729622 (1988-03-01), Pavlath
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patent: 4984298 (1991-01-01), Slusher et al.
patent: 4988169 (1991-01-01), Walker
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Yamamoto, "Preparation, measurement . . . of optical quantum states" Rev. of Mod. Physics, vol. 58, No. 4 Oct. 1986 pp. 1001-1017.
Yurke et al., "SU(2) and SU(1,1) interferometers" Amer. Phys. Soc. Physical Rev. A vol. 33, No. 6. Jun. 1986 pp. 4033-4054.
H. P. Yuen, "Two-photon Coherent States of the Radiation Field", Physical Review A, vol. 13, pp. 2226-2243 (1976). This is an example of an early paper that discusses basic self-squeezed states.
B. Yurke, "Squeezed-coherent-state Generation via Four-wave Mixers and Detection via Homodyne Detectors", Physical Review A, vol. 32, pp. 300-310 (1985). This is an example of an early paper that discusses basic mutually-squeezed states.
R. R. Tucci, "Two-mode Gaussian Density Matrices and Squeezing of Photons", International Journal of Modern Physics B, vol. 6, pp. 1657-1709, (May 20, 1992). First publication where I discussed the invention that I am now trying to patent.
C. M. Caves, "Quantum-mechanical Noise in an Interferometer", Physical Review D, vol. 23, pp. 1693-1708 (1981). First paper that discussed the use of basic self-squeezed states for interferometry.
R. S. Bondurant and J. H. Shapiro, "Squeezed States in Phase-sensing Interferometers", Physical Review D, vol. 30, pp. 2548-2556 (1984). First paper that discussed the use of basic mutually-squeezed states for interferometry.
B. Yurke and E. A. Whittaker, "Squeezed-state-enhanced Frequency-modulation Spectroscopy", Optics Letters, vol. 12, pp. 236-238 (1987). Example of paper discussing the use of squeezed states for spectroscopy.
A. S. Lane, M. S. Reid and D. F. Walls, "Absorption Spectroscopy beyond the Shot-noise Limit", Physical Review Letters, vol. 60, pp. 1940-1942 (1988). Example of paper discussing the use of squeezed states for spectroscopy.
E. S. Polsik, J. Carri, H. J. Kimble, "Spectroscopy with Squeezed Light", vol. 68, pp. 3020-3023 (1992). Example of paper discussing the use of squeezed states for spectroscopy.
F. T. Arecchi, "Measurement of the Statistical Distribution of Gaussian and Laser Sources", Physical Review Letters, vol. 15, pp. 912-916 (1965). Discusses how to generate one-mode unsqueezed light with a given noise intensity by: using pulverized glass.
B. Yurke and M. Potasek, "Obtainment of Thermal Noise from a Pure Quantum State", Physical Review A, vol. 36, pp. 3464-3466 (1987). Discusses how to generate one-mode unsqueezed light with a given noise intensity by: using one mode out of a two-mode squeezed state.

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