Hyperfine-interaction limits polarization entanglement of photons from semiconductor quantum dots
arXiv:2302.05983 · doi:10.1103/PhysRevB.108.L081405
Abstract
Excitons in quantum dots are excellent sources of polarization-entangled photon pairs, but a quantitative understanding of their interaction with the nuclear spin bath is still missing. Here we investigate the role of hyperfine energy shifts using experimentally accessible parameters and derive an upper limit to the achievable entanglement fidelity. Our results are consistent with all available literature, indicate that spin-noise is often the dominant process limiting the entanglement in InGaAs quantum dots, and suggest routes to alleviate its effect.
References in corpus (43)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- On the Measurement of Qubits
- Electron spin relaxation by nuclei in semiconductor quantum dots
- Entangled Photon Pairs from Semiconductor Quantum Dots
- A bright and fast source of coherent single photons
- On-demand semiconductor single-photon source with near-unity indistinguishability
- On-demand generation of indistinguishable polarization-entangled photon pairs
- Charge noise and spin noise in a semiconductor quantum device
- A solid-state entangled photon pair source with high brightness and indistinguishability
- Nuclear spin physics in quantum dots: an optical investigation
- On-demand semiconductor source of entangled photons which simultaneously has high fidelity, efficiency, and indistinguishability
- Improved fidelity of triggered entangled photons from single quantum dots
- Highly indistinguishable and strongly entangled photons from symmetric GaAs quantum dots
- Towards quantum dot arrays of entangled photon emitters
- Droplet Epitaxy of Semiconductor Nanostructures for Quantum Photonic Devices
- Electric-field-induced coherent coupling of the exciton states in a single quantum dot
- Strain-Tunable GaAs Quantum dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand
- Coherence of an Entangled Exciton-Photon State
- Hole - Nuclear Spin Interaction in Quantum Dots
- Quantum Interference of Identical Photons from Remote GaAs Quantum Dots
- A quantum light emitting diode for the standard telecom window around 1550 nm
- Quantum Interface of an Electron and a Nuclear Ensemble
- Symmetric quantum dots as efficient sources of highly entangled photons
- Strain-tunable entangled-light-emitting diodes with high yield and fast operation speed
- Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions
- Highly entangled photons from hybrid piezoelectric-semiconductor quantum dot devices
- Ideal refocusing of an optically active spin qubit under strong hyperfine interactions
- Probing electron-phonon interaction through two-photon interference in resonantly driven semiconductor quantum dots
- Impact of heavy hole-light hole coupling on optical selection rules in GaAs quantum dots
- On-demand source of maximally entangled photon-pairs using the biexciton-exciton radiative cascade
- GaAs quantum dots grown by droplet etching epitaxy as quantum light sources
- Polarization properties of excitonic qu-bits in single self-assembled quantum dots
- Quadrupolar spectra of nuclear spins in strained InGaAs quantum dots
- Improving a solid-state qubit through an engineered mesoscopic environment
- Collective quantum memory activated by a driven central spin
- Phonon-assisted decoherence in the production of polarization-entangled photons in a single semiconductor quantum dot
- GHz-clocked teleportation of time-bin qubits with a telecom C-band quantum dot
- Single-Particle-Picture Breakdown in laterally weakly confining GaAs Quantum Dots
- Resolving the temporal evolution of line broadening in quantum emitters
- Two-Photon Excitation Sets Limit to Entangled Photon Pair Generation from Quantum Emitters
- A multipair-free source of entangled photons in the solid state
- Impact of ex-situ rapid thermal annealing on the magneto-optical properties and the oscillator strength of In(Ga)As quantum dots
- Two-photon excitation with finite pulses unlocks pure dephasing-induced degradation of entangled photons emitted by quantum dots
Cited by in corpus (4)
- A source of entangled photons based on a cavity-enhanced and strain-tuned GaAs quantum dot
- Electric-field control of photon indistinguishability in cascaded decays in quantum dots
- Signatures of the Optical Stark Effect on Entangled Photon Pairs from Resonantly-Pumped Quantum Dots
- Probing electron spin dynamics in single telecom InAs(P)/InP quantum dots using the Hanle effect