Protocol for generating multi-photon entangled states from quantum dots in the presence of nuclear spin fluctuations
arXiv:1706.02486 · doi:10.1103/PhysRevA.96.062329
Abstract
Multi-photon entangled states are a crucial resource for many applications in quantum information science. Semiconductor quantum dots offer a promising route to generate such states by mediating photon-photon correlations via a confined electron spin, but dephasing caused by the host nuclear spin environment typically limits coherence (and hence entanglement) between photons to the spin time of a few nanoseconds. We propose a protocol for the deterministic generation of multi-photon entangled states that is inherently robust against the dominating slow nuclear spin environment fluctuations, meaning that coherence and entanglement is instead limited only by the much longer spin time of microseconds. Unlike previous protocols, the present scheme allows for the generation of very low error probability polarisation encoded three-photon GHZ states and larger entangled states, without the need for spin echo or nuclear spin calming techniques.
References in corpus (40)
- Quantum Cryptography
- Quantum Computing
- Review article: Linear optical quantum computing
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- QuTiP: An open-source Python framework for the dynamics of open quantum systems
- Measurement-based quantum computation with cluster states
- Near optimal single photon sources in the solid state
- Ultra-bright source of polarization-entangled photons
- Measurement-based quantum computation
- Electron spin relaxation by nuclei in semiconductor quantum dots
- Near-unity coupling efficiency of a quantum emitter to a photonic-crystal waveguide
- Ultra-Large-Scale Continuous-Variable Cluster States Multiplexed in the Time Domain
- On-demand semiconductor single-photon source with near-unity indistinguishability
- Charge noise and spin noise in a semiconductor quantum device
- Deterministic Generation of a Cluster State of Entangled Photons
- Nuclear spin physics in quantum dots: an optical investigation
- A photonic cluster state machine gun
- Optical pumping of electronic and nuclear spin in single charge-tunable quantum dots
- Spin decoherence of a heavy hole coupled to nuclear spins in a quantum dot
- Localizable Entanglement
- From three-photon GHZ states to ballistic universal quantum computation
- Entangling photons using a charged quantum dot in a microcavity
- Knight Field Enabled Nuclear Spin Polarization in Single Quantum Dots
- Electron Spin Dephasing due to Hyperfine Interactions with a Nuclear Spin Bath
- Phonon limit to simultaneous near-unity efficiency and indistinguishability in semiconductor single photon sources
- Optical pumping of quantum dot nuclear spins
- Optically generated 2-dimensional photonic cluster state from coupled quantum dots
- Demonstration of quantum entanglement between a single electron spin confined to an InAs quantum dot and a photon
- Quantum control of a spin qubit coupled to a photonic crystal cavity
- Local unitary equivalence of multipartite pure states
- Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron
- Deterministic generation of all-photonic quantum repeaters from solid-state emitters
- Observation of quantum jumps of a single quantum dot spin using sub-microsecond single-shot optical readout
- Fast spin rotations by optically controlled geometric phases in a quantum dot
- Probing electron-phonon interaction through two-photon interference in resonantly driven semiconductor quantum dots
- A Unified Theory of Consequences of Spontaneous Emission in a System
- Improving a solid-state qubit through an engineered mesoscopic environment
- Single-shot optical readout of a quantum bit using cavity quantum electrodynamics
- Error distributions on large entangled states with non-Markovian dynamics
- Noise effects and tomography of remote entangled spins in quantum dots