Entanglement distillation between solid-state quantum network nodes

2017/03/09 by N. Kalb, Norbert Kalb, A. A. Reiserer +17 · 2 citations
Computer Science · Physics and Astronomy · #Cluster state #Distillation #Entanglement distillation #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum entanglement #Quantum many-body systems #Quantum network #Quantum teleportation #Squashed entanglement #Topology (electrical circuits) #W state #quant-ph

paper · pdf · doi:10.1126/science.aan0070

published as Science, 356, 928-932 (2017)

arxiv created 2017/03/09 · openalex created_date 2017/04/07 · openalex publication_date 2017/06/02 · arxiv updated 2017/06/15 · openalex updated_date 2026/08/06

Abstract

The impact of future quantum networks hinges on high-quality quantum entanglement shared between network nodes. Unavoidable imperfections necessitate a means to improve remote entanglement by local quantum operations. We realize entanglement distillation on a quantum network primitive of distant electron-nuclear two-qubit nodes. The heralded generation of two copies of a remote entangled state is demonstrated through single-photon-mediated entangling of the electrons and robust storage in the nuclear spins. After applying local two-qubit gates, single-shot measurements herald the distillation of an entangled state with increased fidelity that is available for further use. The key combination of generating, storing, and processing entangled states should enable the exploration of multiparticle entanglement on an extended quantum network.

Citations

• Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
• Logarithmic Negativity: A Full Entanglement Monotone That is not Convex
• Creation of entangled states of distant atoms by interference
• Quantum repeaters based on entanglement purification
• Quantum Beat of Two Single Photons
• Measurement-Based Entanglement under Conditions of Extreme Photon Loss
• Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
• Quantum Privacy Amplification and the Security of Quantum Cryptography over Noisy Channels
• Quantum repeater with encoding
• Generation of heralded entanglement between distant hole spins
• Unconditional quantum teleportation between distant solid-state quantum bits

Cited by

• Quantum repeaters based on individual electron spins and nuclear-spin-ensemble memories in quantum dots
• Universal quantum gates between nitrogen-vacancy centers in a levitated nanodiamond
• Nanomaterials for Quantum Information Science and Engineering