Control of photon correlations in type II parametric down-conversion

Andrews, Roger; Joseph, A T; Pike, E. R.; Sarkar, Sarben

doi:10.1088/1464-4266/7/12/007

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…Besides the Refs. [38,46,47,48], the spectral influences on the photon correlations or fourth-order interference [51,52,53,54,55,56] have been extensively studied. Recently, the decoherence of photon pairs from parametric down-conversion have been experimentally studied and characterized in terms of fluctuations of pump laser [57,58].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons

et al. 2008

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We consider the decoherence of photons suffering in phase-damping channels. By exploring the evolutions of single-photon polarization states and two-photon polarization-entangled states, we find that different frequency spectrum envelopes of photons induce different decoherence processes. A white frequency spectrum can lead the decoherence to an ideal Markovian process. Some color frequency spectrums can induce asymptotical decoherence, while, some other color frequency spectrums can make coherence vanish periodically with variable revival amplitudes. These behaviors result from the non-Markovian effects on the decoherence process, which may give rise to a revival of coherence after complete decoherence.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons

et al. 2008

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“…They observed a splitting in time of the two-photon wave function into two lobes. In a previous paper [21], we presented a detailed theoretical model of the temporal shaping of spectrally phase-modulated photons produced via the process of collinear type-II SPDC. By manipulating the spectral phase of the signal or idler photons, we showed that it is possible to control the number of photon pairs arriving at a given location with a specific time delay.…”

Section: Introductionmentioning

confidence: 99%

Phase-modulated shaping of narrowband type-I parametric down-converted photons

Joseph¹,

Andrews²,

Pike³

et al. 2006

New J. Phys.

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We present a general theoretical description of the temporal shaping of narrowband noncollinear type-I down-converted photons using a spectral phase filter with a symmetric phase distribution. By manipulating the spectral phase of the signal or idler photon, we demonstrate control of the correlation time and shape of the two-photon wave function with modulation frequency and modulation depth of the phase distribution.

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Role of noise operators on two-photon correlations in an extended coherent Raman medium

Ooi

Zubairy

2007

Phys. Rev. A

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An extended medium driven in a double Raman configuration generates Stokes and anti-Stokes fields that are described by coupled parametric oscillator equations with solutions that depend on input boundary operators and quantum noise operators. We identify the conditions where the boundary operators can be the substitute to the noise operators for describing two-photon cross correlation in forward and backward geometries. These conditions include short sample and small decoherence between ground states ␥ bc , and they are fulfilled by the spontaneous Raman electromagnetic induced transparency scheme ͑weak pump with large detuning͒. We verify the correspondence between the results from boundary and noise operators analytically and show that the correlation due to the boundary operators is typically smaller than that due to the noise operators. In general the noise operators are required to obtain the correct correlation, especially when the control laser field is weak and ␥ bc is finite. Explanations for the findings are given based on the physics represented by the boundary operators and noise operators. Similar conclusions are obtained for the Stokes and anti-Stokes intensities.

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Control of photon correlations in type II parametric down-conversion

Cited by 5 publications

References 27 publications

Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons

Dependence of the decoherence of polarization states in phase-damping channels on the frequency spectrum envelope of photons

Phase-modulated shaping of narrowband type-I parametric down-converted photons

Role of noise operators on two-photon correlations in an extended coherent Raman medium

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