Observation of Quantum Interference in the Plasmonic Hong-Ou-Mandel Effect

Martino, Giuliana Di; Sonnefraud, Yannick; Tame, Mark; Kéna‐Cohen, Stéphane; Dieleman, F.; Özdemir, Şahin Kaya; Kim, M. S.; Maier, Stefan A.

doi:10.1103/physrevapplied.1.034004

Cited by 97 publications

(94 citation statements)

References 36 publications

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“…The plasmonic response of metal nanostructures has motivated both fundamental nano-optical investigations, as well as exploration of applications such as surface enhanced Raman spectroscopy (SERS) 1 , quantum information processing 2,3 , photovoltaic cells 4 and device engineering 5 . In order to actively tune plasmonic systems which can trap light of particular resonant colours, control of the local charge density as well as the surrounding dielectric environment is crucial.…”

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confidence: 99%

Tracking Nanoelectrochemistry Using Individual Plasmonic Nanocavities

et al. 2017

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We study in real time the optical response of individual plasmonic nanoparticles on a mirror, utilized as electrodes in an electrochemical cell when a voltage is applied. In this geometry, Au nanoparticles are separated from a bulk Au film by an ultrathin molecular spacer. The nanoscale plasmonic hotspot underneath the nanoparticles locally reveals the modified charge on the Au surface and changes in the polarizability of the molecular spacer. Dark-field and Raman spectroscopy performed on the same nanoparticle show our ability to exploit isolated plasmonic junctions to track the dynamics of nanoelectrochemistry. Enhancements in Raman emission and blue-shifts at a negative potential show the ability to shift electrons within the gap molecules.

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confidence: 99%

Tracking Nanoelectrochemistry Using Individual Plasmonic Nanocavities

et al. 2017

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“…Experimental work in quantum plasmonics using photons to excite SPPs has so far confirmed the preservation of entanglement when transferring quantum states between photons and SPPs [11,12], the preservation of superposition states [13], as well as a wide range of other properties related to the quantum statistics of the excitation process [14][15][16][17][18]. Most recently experiments have demonstrated two-plasmon quantum interference, confirming the maintenance of the bosonic nature of the photons used to excite SPPs in a plasmonic Hong-Ou-Mandel setting [19][20][21][22]. * Electronic address: george@uwm.edu † Electronic address: markstame@gmail.com Using either end-fire or prism methods, the excited plasmonic state propagates along the graphene surface.…”

Section: Introductionmentioning

confidence: 80%

Quantum plasmonic excitation in graphene and loss-insensitive propagation

et al. 2015

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We investigate the excitation of quantum plasmonic states of light in graphene using end-fire and prism coupling. In order to model the excitation process quantum mechanically we quantize the transverse-electric and transverse-magnetic surface plasmon polariton (SPP) modes in graphene. A selection of regimes are then studied that enable the excitation of SPPs by photons and we show that efficient coupling of photons to graphene SPPs is possible at the quantum level. Futhermore, we study the excitation of quantum states and their propagation under the effects of loss induced from the electronic degrees of freedom in the graphene. Here, we investigate whether it is possible to protect quantum information using quantum error correction techniques. We find that these techniques provide a robust-to-loss method for transferring quantum states of light in graphene over large distances.

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“…But the metallic film thickness is less than optical diffraction limit (usually only about 100 nm), which limits its application in plasmonic and quantum information fields. More recently, quantum statistical property of single plasmon was verified with metallic stripe waveguides 18 and bosonic nature of it was also proved in on-chip Hong-Ou-Mandel experiments [19][20][21][22] based on plasmonic waveguides, which show us the feasibility of achieving basic quantum logic gates for linear optical quantum computation. However, the excitation of SPPs is polarization-dependent, which may be an obstacle in the way of transmitting polarization entanglement in plasmonic waveguide.…”

Section: Introductionmentioning

confidence: 99%

Transmission of Photonic Quantum Polarization Entanglement in a Nanoscale Hybrid Plasmonic Waveguide

Zou

Ren

et al. 2015

Nano Lett.

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Photonic quantum technologies have been extensively studied in quantum information science, owing to the high-speed transmission and outstanding low-noise properties of photons.However, applications based on photonic entanglement are restricted due to the diffraction limit. In this work, we demonstrate for the first time the maintaining of quantum polarization entanglement in a nanoscale hybrid plasmonic waveguide composed of a fiber taper and a silver nanowire. The transmitted state throughout the waveguide has a fidelity of 0.932 with the maximally polarization entangled state Φ + . Furthermore, the Clauser, Horne, Shimony, and Holt (CHSH) inequality test performed, resulting in value of 2.495 ± 0.147 > 2, demonstrates the violation of the hidden variable model. Since the plasmonic waveguide confines the effective mode area to subwavelength scale, it can bridge nanophotonics and quantum optics, and may be used as near-field quantum probe in a quantum near-field micro/nano-scope, which can realize high spatial resolution, ultra-sensitive, fiber-integrated, and plasmon-enhanced detection.

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Observation of Quantum Interference in the Plasmonic Hong-Ou-Mandel Effect

Cited by 97 publications

References 36 publications

Tracking Nanoelectrochemistry Using Individual Plasmonic Nanocavities

Tracking Nanoelectrochemistry Using Individual Plasmonic Nanocavities

Quantum plasmonic excitation in graphene and loss-insensitive propagation

Transmission of Photonic Quantum Polarization Entanglement in a Nanoscale Hybrid Plasmonic Waveguide

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