Quantum hydrodynamics of a single particle
arXiv:1908.03472 · doi:10.1038/s41377-020-0324-x
Abstract
Semiconductor devices are strong competitors in the race for the development of quantum com-putational systems. In this work, we interface two semiconductor building blocks of different di-mensionality and with complementary properties: (1) a quantum dot hosting a single exciton andacting as a nearly ideal single-photon emitter and (2) a quantum well in a 2D microcavity sustain-ing polaritons, which are known for their strong interactions and unique hydrodynamics propertiesincluding ultrafast real-time monitoring of their propagation and phase-mapping. In the presentexperiment we can thus observe how the injected single particles propagate and evolve inside themicrocavity, giving rise to hydrodynamics features typical of macroscopic systems despite their in-trinsic genuine quantum nature. In the presence of a structural defect, we observe the celebratedquantum interference of a single particle that produces fringes reminiscent of a wave propagation.While this behaviour could be theoretically expected, our imaging of such an interference pattern,together with a measurement of antibunching, constitutes the first demonstration of spatial mappingof the self-interference of a single quantum particle hitting an obstacle.
9 pages, 4 figures, supplementary 4 pages, 6 figures
References in corpus (16)
- Quantum fluids of light
- All-optical signal processing platforms for CMOS compatible integrated nonlinear optics
- Silica-on-Silicon Waveguide Quantum Circuits
- Experimental realization of Wheeler's delayed-choice GedankenExperiment
- A wavelength-tunable fiber-coupled source of narrowband entangled photons
- On-demand generation of background--free single photons from a solid-state source
- Indefinite Causal Order in a Quantum Switch
- Quantum correlations of confined exciton-polaritons
- Strain-Tunable GaAs Quantum dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand
- Quantum-correlated photons from semiconductor cavity polaritons
- Semiconductor quantum dots as an ideal source of polarization entangled photon pairs on-demand: a review
- Nonlinear integrated quantum electro-optic circuits
- Fully on-chip single-photon Hanbury-Brown and Twiss experiment on a monolithic semiconductor-superconductor platform
- Highly indistinguishable single photons from incoherently and coherently excited GaAs quantum dots
- Controlled integration of selected detectors and emitters in photonic integrated circuits
- Quantum statistics of polariton parametric interactions
Cited by in corpus (7)
- Quantum fluids of light in all-optical scatterer lattices
- Demonstration of dipolar-induced enhancement of parametric effects in polariton waveguides
- Polaritonic Quantum Matter
- Integrated quantum polariton interferometry
- Deterministic entangling gates with nonlinear quantum photonic interferometers
- Resonant tunneling diodes in semiconductor microcavities: modeling polaritonic features in the THz displacement current
- Emergent Viscous Hydrodynamics From a Single Quantum Particle