Macroscopic Polarization Rotation Induced by a Single Spin

Abstract

Solid-state spins hold many promises for quantum information processing. Entangling the polarization of a single photon to the state of a single spin would open new paradigms in quantum optics like delayed-photons entanglement, deterministic logic gates or fault-tolerant quantum computing. These perspectives rely on the possibility that a single spin induces a macroscopic rotation of a photon polarization. Such polarization rotations induced by single spins were recently observed, yet limited to a few 10-3 degrees, due to poor spin-photon coupling. Here we report the amplification by three orders of magnitude of the spin-photon interaction, using a cavity quantum electrodynamics device. A single hole spin trapped in a semiconductor quantum dot is deterministically coupled to a micropillar cavity. The cavity-enhanced coupling between the incoming photons and the solid-state spin results in a polarization rotation by \pm 6 degrees when the spin is optically initialized in either the up or down state. These results open the way towards a spin-based quantum network.

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Cited by in corpus (40)

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• Many-Body Quantum Electrodynamics Networks: Non-Equilibrium Condensed Matter Physics with Light
• A solid-state single-photon filter
• Encoding qubits into oscillators with atomic ensembles and squeezed light
• Mesoscopic Superposition States Generated by Synthetic Spin-orbit Interaction in Fock-state Lattices
• A charged quantum dot micropillar system for deterministic light matter interactions
• Spin-based single-photon transistor, dynamic random access memory, diodes and routers in semiconductors
• Waveguide-integrated silicon T centres
• Photonic graph state generation from quantum dots and color centers for quantum communications
• Purification of a single photon nonlinearity
• A spin-photon interface using charge-tunable quantum dots strongly coupled to a cavity
• Spin temperature concept verified by optical magnetometry of nuclear spins
• Single-shot optical readout of a quantum bit using cavity quantum electrodynamics
• Dynamic polarization of electron spins interacting with nuclei in semiconductor nanostructures
• Coulomb mediated hybridization of excitons in artificial molecules
• Tomography of optical polarization rotation induced by a quantum dot-cavity device
• Non-linear two-photon resonance fluorescence on a single artificial atom
• Spin fluctuations of non-equilibrium electrons and excitons in semiconductors
• Spin and reoccupation noise in a single quantum dot beyond the fluctuation-dissipation theorem
• Theory of optical spin control in quantum dot microcavities
• Photon phase shift at the few-photon level and optical switching by a quantum dot in a microcavity
• Accurate measurement of a 96% input coupling into a cavity using polarization tomography
• Measurement back-action and spin noise spectroscopy in a charged cavity-QED device in the strong coupling regime
• Cavity-waveguide interplay in lossy resonators and its role in optimal single-photon sources
• Quantum Zeno effect under continuous spin noise measurement in a quantum dot-micropillar cavity
• Electroluminescence as a probe of strong exciton-plasmon coupling in few-layer WSe2
• Ultrafast pulse phase shift in a charged quantum dot- micropillar system
• Implementations of more general solid-state (SWAP)${}^{1/m}$ and controlled-(swap)${}^{1/m}$ gates
• Brillouin Scattering Selection Rules in Polarization-Sensitive Photonic Resonators
• Complete hyperentangled Bell states analysis for polarization-spatial-time-bin degrees of freedom with unity fidelity
• Hole-capture competition between a single quantum dot and an ionized acceptor
• Kondo enhancement of current induced spin accumulation in a quantum dot
• Faraday and Kerr rotation due to photoinduced orbital magnetization in two-dimensional electron gas
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• Electron Spin Noise under the Conditions of Nuclei Induced Frequency Focusing
• Fundamental limits for non-destructive measurement of a single spin by Faraday rotation
• Birefringent spin-photon interface generates polarization entanglement