Superconducting quantum node for entanglement and storage of microwave radiation.

Physical review letters · 2015 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 6578

Study snapshot

PublicationPhysical review letters · 2015

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

Superconducting circuits and microwave signals are good candidates to realize quantum networks, which are the backbone of quantum computers. We have realized a quantum node based on a 3D microwave superconducting cavity parametrically coupled to a transmission line by a Josephson ring modulator. We first demonstrate the time-controlled capture, storage, and retrieval of an optimally shaped propagating microwave field, with an efficiency as high as 80%. We then demonstrate a second essential ability, which is the time-controlled generation of an entangled state distributed between the node and a microwave channel.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

Exposuremicrowave

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

A quantum node using a 3D microwave superconducting cavity coupled to a transmission line via a Josephson ring modulator demonstrated time-controlled capture, storage, and retrieval of an optimally shaped propagating microwave field with up to 80% efficiency. The system also demonstrated time-controlled generation of an entangled state distributed between the node and a microwave channel.

Outcomes measured

capture/storage/retrieval efficiency of propagating microwave field
generation of entangled state between node and microwave channel

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": "microwave",
    "source": "other",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "capture/storage/retrieval efficiency of propagating microwave field",
    "generation of entangled state between node and microwave channel"
  ],
  "main_findings": "A quantum node using a 3D microwave superconducting cavity coupled to a transmission line via a Josephson ring modulator demonstrated time-controlled capture, storage, and retrieval of an optimally shaped propagating microwave field with up to 80% efficiency. The system also demonstrated time-controlled generation of an entangled state distributed between the node and a microwave channel.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "superconducting circuits",
    "microwave signals",
    "quantum networks",
    "3D microwave cavity",
    "Josephson ring modulator",
    "transmission line",
    "storage",
    "retrieval",
    "entanglement"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1103/physrevlett.114.090503
PubMed: 25793790

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