# Counterpropagating continuous-variable entangled states in lossy coupled-cavity optical waveguides

@article{Seifoory2019CounterpropagatingCE, title={Counterpropagating continuous-variable entangled states in lossy coupled-cavity optical waveguides}, author={Hossein Seifoory and Lukas G. Helt and John E. Sipe and Marc M. Dignam}, journal={Physical Review A}, year={2019} }

We present an integrated source of counterpropagating entangled states based on a coupled resonator optical waveguide that is pumped by a classical pulsed source incident from above the waveguide. We investigate theoretically the generation and propagation of continuous variable entangled states in this coupled-cavity system in the presence of intrinsic loss. Using a tight-binding approximation, we derive analytic time-dependent expressions for the number of photons in each cavity, as well as…

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## References

SHOWING 1-10 OF 68 REFERENCES

Squeezed-state evolution and entanglement in lossy coupled-resonator optical waveguides

- Physics
- 2018

We investigate theoretically the temporal evolution of a squeezed state in lossy coupled-cavity systems. We present a general formalism based upon the tight binding approximation and apply this to a…

Generation of Counterpropagating Path-Entangled Photon Pairs in a Single Periodic Waveguide.

- PhysicsPhysical review letters
- 2017

Using the unique properties of Bloch modes in such periodic structures, it is shown that two counterpropagating phase-matching conditions can be fulfilled simultaneously, allowing for the generation of path-entangled Bell states in a single periodic waveguide.

Bragg reflection waveguides as integrated sources of entangled photon pairs

- Physics
- 2012

We explore the potential of versatile and efficient entangled photon pair generation by spontaneous parametric downconversion in Bragg reflection waveguides. By employing a quantum treatment of modes…

Generation of polarization-entangled photon pairs with arbitrary joint spectrum

- Physics
- 2004

We present a scheme for generating polarization-entangled photons pairs with arbitrary joint spectrum. Specifically, we describe a technique for spontaneous parametric down-conversion in which both…

Entangling two distant nanocavities via a waveguide

- Physics
- 2011

In this paper, we present a scheme for generating continuous-variable entanglement between two spatially separated nanocavities in photonic crystals, which are mediated by a coupled-resonator optical…

Generation of two-photon States with an arbitrary degree of entanglement via nonlinear crystal superlattices.

- PhysicsPhysical review letters
- 2006

A general method of engineering the joint quantum state of photon pairs produced in spontaneous parametric down-conversion, which has the potential of synthesizing a broad range of states including factorizable states crucial for quantum networking and states optimized for Hong-Ou-Mandel interferometry.

Squeezed thermal states: the result of parametric down conversion in lossy cavities

- Physics
- 2017

We theoretically investigate the properties and temporal evolution of squeezed states generated using degenerate parametric down conversion in lossy cavities. We show that the Lindblad master…

Entangled, guided photon generation in (1+1)-dimensional photonic crystals (6 pages)

- Physics
- 2006

A scheme based on photonic crystal technology is proposed as an ultrabright source of entangled photons on a miniaturized scale. The geometry consists of a multilayer microcavity, excited by a…

Dynamics of quantum light in integrated nonlinear waveguide arrays and generation of robust continuous variable entanglement

- Physics
- 2012

Introduction: The generation and manipulation of light are at the heart of optical physics and photonics technologies. In particular, waveguides offer highly flexible tools for manipulating and…

Coupled-resonator optical waveguide: a proposal and analysis.

- PhysicsOptics letters
- 1999

The relations for the dispersion and the group velocity of the photonic band of the CROW's are obtained and it is found that they are solely characterized by coupling factor k(1) .