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A peer-reviewed article of this preprint also exists.
This version is not peer-reviewed
OPO | Optical parametric oscillation |
SPM | Self phase modulation |
XPM | Cross phase modulation |
FWM | four wave mixing |
NSOPO | Number selective optical parametric oscillation |
TMSV | Two mode squeezed vacuum |
ENZ | Electronically induced transparency |
CV | Continuous variable |
1 | The transverse delta function captures the constraints on the field enforced by the Coulomb gauge. In particular, note that in a medium without free charges or free currents, Maxwell’s equations ensure D and B are always transverse to the direction of radiation propagation, unlike E and H. Furthermore, since both D and B are divergenceless, so must be their commutator. The transverse delta function is consistent with these two properties. It has no divergence and acts as an ordinary delta function on transverse fields. |
2 | For a rigorous discussion see [27]. Quesada provides the following intuitive argument for why neither E nor H can be fundamental: Suppose the Hamiltonian is order in Bose operators. If E is fundamental, it is of order 1. If B is order 1, then is order N. Thus E is order N, a contradiction. A similar argument holds for H. No contradiction occurs with D and B as fundamental. |
3 | Our analysis depends only on the algebraic structure of the Hilbert space and the dynamics generated by the Hamiltonian, so is easily generalized to richer mode structures. |
4 | If the refractive index is not isotropic, A defines an effective cross sectional area, discussed in [32]. |
5 | Permutation invariance typically does not hold near resonance, where we expect our system to reside given the constraints derived later. However, accounting for variability in simply amounts to substituting the average in place of and does not change the results. |
6 | The rotating wave approximation is synonymous with the secular approximation. |
7 | As is the case for , permutation invariance is not valid for the strong nonlinearities required of NSOPO. However, accounting for variability simply amounts to substituting the average in place of and does not change the result. |
8 | See Section 4.3
|
9 | This may be realized, for example, with an acousto-optic modulator. |
10 | This example also captures the behavior of NSOPO via degenerate parametric down conversion and second harmonic generation. In these cases, the fundamental mode and second harmonic are entirely uncorrelated and coupled into the cavity without a need to preserve correlations. We choose to study NSOPO on a two mode squeezed state rather than a single mode state to highlight how noise shaping is identically present in the entangled signal and idler modes. |
Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content. |
Submitted:
19 February 2024
Posted:
20 February 2024
You are already at the latest version
A peer-reviewed article of this preprint also exists.
This version is not peer-reviewed
Submitted:
19 February 2024
Posted:
20 February 2024
You are already at the latest version
OPO | Optical parametric oscillation |
SPM | Self phase modulation |
XPM | Cross phase modulation |
FWM | four wave mixing |
NSOPO | Number selective optical parametric oscillation |
TMSV | Two mode squeezed vacuum |
ENZ | Electronically induced transparency |
CV | Continuous variable |
1 | The transverse delta function captures the constraints on the field enforced by the Coulomb gauge. In particular, note that in a medium without free charges or free currents, Maxwell’s equations ensure D and B are always transverse to the direction of radiation propagation, unlike E and H. Furthermore, since both D and B are divergenceless, so must be their commutator. The transverse delta function is consistent with these two properties. It has no divergence and acts as an ordinary delta function on transverse fields. |
2 | For a rigorous discussion see [27]. Quesada provides the following intuitive argument for why neither E nor H can be fundamental: Suppose the Hamiltonian is order in Bose operators. If E is fundamental, it is of order 1. If B is order 1, then is order N. Thus E is order N, a contradiction. A similar argument holds for H. No contradiction occurs with D and B as fundamental. |
3 | Our analysis depends only on the algebraic structure of the Hilbert space and the dynamics generated by the Hamiltonian, so is easily generalized to richer mode structures. |
4 | If the refractive index is not isotropic, A defines an effective cross sectional area, discussed in [32]. |
5 | Permutation invariance typically does not hold near resonance, where we expect our system to reside given the constraints derived later. However, accounting for variability in simply amounts to substituting the average in place of and does not change the results. |
6 | The rotating wave approximation is synonymous with the secular approximation. |
7 | As is the case for , permutation invariance is not valid for the strong nonlinearities required of NSOPO. However, accounting for variability simply amounts to substituting the average in place of and does not change the result. |
8 | See Section 4.3
|
9 | This may be realized, for example, with an acousto-optic modulator. |
10 | This example also captures the behavior of NSOPO via degenerate parametric down conversion and second harmonic generation. In these cases, the fundamental mode and second harmonic are entirely uncorrelated and coupled into the cavity without a need to preserve correlations. We choose to study NSOPO on a two mode squeezed state rather than a single mode state to highlight how noise shaping is identically present in the entangled signal and idler modes. |
Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content. |
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