Efficient deterministic giant photon phase shift from a single charged quantum dot

Abstract

Solid-state quantum emitters have long been recognised as the ideal platform to realize integrated quantum photonic technologies. We use a self-assembled negatively charged QD in a low Q-factor photonic micropillar to demonstrate for the first time a key figure of merit for deterministic switching and spin-photon entanglement: a shift in phase of an input single photon of $>90^o$ with values of up to $2\pi /3$ ($120^o$) demonstrated. This $>\pi /2$ ($90^o$) measured value represents an important threshold: above this value input photons interact with the emitter deterministically. A deterministic photon-emitter interaction is the only viable scalable means to achieve several vital functionalities not possible in linear optics such as quantum switches and entanglement gates. Our experimentally determined value is limited by mode mismatch between the input laser and the cavity, QD spectral fluctuations and spin relaxation. We determine that up to $80\%$ of the collected photons have interacted with the QD and undergone a phase shift of $\pi$.

arXiv commentSupplementary information is available upon request

References in corpus (33)

• Measurement of conditional phase shifts for quantum logic
• Near optimal single photon sources in the solid state
• On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar
• Scalable photonic quantum computation through cavity-assisted interaction
• Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
• Nanophotonic quantum phase switch with a single atom
• Dipole induced transparency in drop-filter cavity-waveguide systems
• A Quantum Gate between a Flying Optical Photon and a Single Trapped Atom
• A photonic cluster state machine gun
• Giant optical Faraday rotation induced by a single electron spin in a quantum dot: Applications to entangling remote spins via a single photon
• Single-photon nonlinear optics with a quantum dot in a waveguide
• CNOT and Bell-state analysis in the weak-coupling cavity QED regime
• Transform-limited single photons from a single quantum dot
• Nondestructive Detection of an Optical Photon
• Entangling photons using a charged quantum dot in a microcavity
• Giant Optical Non-linearity induced by a Single Two-Level System interacting with a Cavity in the Purcell Regime
• Fiber-optical switch controlled by a single atom
• Highly indistinguishable on-demand resonance fluorescence photons from a deterministic quantum dot micropillar device with 75 $\%$ extraction efficiency
• A quantum phase switch between a single solid-state spin and a photon
• Loss-resistant state teleportation and entanglement swapping using a quantum-dot spin in an optical microcavity
• A Waveguide-Coupled On-Chip Single Photon Source
• Optimized phase switching using a single atom nonlinearity
• A solid-state single-photon filter
• Conditional phase shift from a quantum dot in a pillar microcavity
• Quantum optics with near lifetime-limited quantum-dot transitions in a nanophotonic waveguide
• An artificial Rb atom in a semiconductor with lifetime-limited linewidth
• Cavity-enhanced coherent light scattering from a quantum dot
• A charged quantum dot micropillar system for deterministic light matter interactions
• Deterministic optical quantum computer using photonic modules
• Purification of a single photon nonlinearity
• Tomography of optical polarization rotation induced by a quantum dot-cavity device
• Generating entanglement with low Q-factor microcavities
• Optical characterization and selective addressing of the resonant modes of a micropillar cavity with a white light beam

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