Multipartite entanglement in the optical frequency comb of a depleted-pump optical parametric oscillator

Shahrokhshahi, Reihaneh; Pfister, Olivier

doi:10.1364/cleo_at.2011.jthb26

Cited by 2 publications

(3 citation statements)

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“…In most experiments, the parametric medium is pumped by a monochromatic field, so that the entangled signal and idler modes have to fulfil the relation ω ℓ + ω ℓ ′ = ω pump : one gets a set of independently entangled couples of signal and idler modes, but without any multipartite entanglement. The use of a bi-chromatic pump (Chen et al, 2014) allows physicists to greatly enhance, and in a well controlled way, the number (up to 60) and the topology of entangled couples of modes: a whole zoology of cluster states (Pysher et al, 2011;Shahrokhshahi and Pfister, 2011) can thus be generated, with applications to measurement based quantum computation (Menicucci et al, 2008).…”

Section: Use Of Pump Modes Of Different Shapesmentioning

confidence: 99%

“…For instance, one can use the resonant frequency modes of an OPO as the nodes of the cluster, and tailor the entanglement by engineering the pump of the cavity. One can use several single frequency pumps (Chen et al, 2014;Menicucci et al, 2008;Shahrokhshahi and Pfister, 2011) or a pulse shaped pump ( (Arzani et al, 2018)). It is also possible to cascade χ (3) interaction in atomic vapours (Jing et al, 2011;Pooser and Jing, 2014;Qin et al, 2014b).…”

Section: B Cluster States: Concepts and Experimental Implementationmentioning

confidence: 99%

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Modes and states in Quantum Optics

Fabre,

Treps

2019

Preprint

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A few decades ago, quantum optics stood out as a new domain of physics by exhibiting states of light with no classical equivalent. The first investigations concerned single photons, squeezed states, twin beams and EPR states, that involve only one or two modes of the electromagnetic field. The study of the properties of quantum light then evolved in the direction of more and more complex and rich situations, involving many modes, either spatial, temporal, frequency, or polarization modes. Actually, each mode of the electromagnetic field can be considered as an individual quantum degree of freedom. It is then possible, using the techniques of nonlinear optics, to couple different modes, and thus to build in a controlled way a quantum network (Kimble, 2008) in which the nodes are optical modes, and that is endowed with a strong multipartite entanglement. In addition, such networks can be easily reconfigurable and subject only to weak decoherence. They open indeed many promising perspectives for optical communications and computation. Because of the linearity of Maxwell equations a linear superposition of two modes is another mode. This means that a "modal superposition principle" exists hand in hand with the regular quantum state superposition principle. The purpose of the present review is to show the interest of considering these two aspects of multimode quantum light in a global way. Indeed using different sets of modes allows to consider the same quantum state under different perspectives: a given state can be entangled in one basis, factorized in another. We will show that there exist some properties that are invariant over a change in the choice of the basis of modes. We will also present the way to find the minimal set of modes that are needed to describe a given multimode quantum state. We will then show how to produce, characterize, tailor and use multimode quantum light, consider the effect of loss and of amplification on such light and the modal aspects of the two-photon coincidences. Switching to applications to quantum technologies, we will show in this review that it is possible to find not only quantum states that are likely to improve parameter estimation, but also the optimal modes in which these states "live". We will finally present how to use such quantum modal networks for measurement-based quantum computation.

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Section: Use Of Pump Modes Of Different Shapesmentioning

confidence: 99%

Section: B Cluster States: Concepts and Experimental Implementationmentioning

confidence: 99%

Modes and states in Quantum Optics

Fabre,

Treps

2019

Preprint

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“…Su and Tan (2006) [8] observed a two-color entanglement measured to the above-threshold OPO only. The multipartite nature of entanglement was verified by evaluating the van Loock-Furusawa criterion for a particular set of entanglement witnesses deduced from physical considerations [9]. Johansson R. (2014) [10] investigated theoretically the conditions under which a multi-mode nano-mechanical resonator, operating as a purely mechanical parametric oscillator, can be driven into highly non-classical states.…”

Section: Introductionmentioning

confidence: 99%

The Test of Entanglement of Polarization States of a Semi-Classical Optical Parametric Oscillator

Lisamadi¹

2017

AJMP

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Abstract:We study the dynamical continuous variable entanglement in a semi-classical Optical parametric oscillator (OPO).The general time evolving photon polarization state vectors arising from exact analytical solutions of Heisenberg's equations of the system are used to obtain the photon polarization Bell state vectors. The reduced density matrices of photon polarization Bell state vectors of the semi-classical OPO produce a greater violation of CHSH Bell's inequality beyond the Cirel'son's inequality.

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Multipartite entanglement in the optical frequency comb of a depleted-pump optical parametric oscillator

Cited by 2 publications

References 46 publications

Modes and states in Quantum Optics

Modes and states in Quantum Optics

The Test of Entanglement of Polarization States of a Semi-Classical Optical Parametric Oscillator

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