First In Human Quantum Entanglement Imaging

---
name: first-in-human-quantum-entanglement-imaging
description: "First-in-human quantum entanglement imaging methodology using J-PET plastic scintillator scanner. Measures polarization correlations of annihilation photons from positron-electron annihilation in vivo for clinical diagnostics. Use when: quantum PET imaging, entanglement-based medical imaging, J-PET scanner design, polarization-correlated tomography, quantum entanglement degree as biomarker, 68Ga radiopharmaceutical quantum imaging."
metadata:
  arxiv_id: "2606.29421"
  published: "2026-06-28"
  authors: "Pawel Moskal et al."
  tags: [quantum-imaging, PET, entanglement, medical-diagnostics, J-PET, clinical]
---

# First-in-Human Quantum Entanglement Imaging

## Core Concept

First in vivo imaging of quantum entanglement degree from positron-electron annihilation in human subjects using the J-PET (Jagiellonian Positron Emission Tomography) scanner constructed from plastic scintillators. Exploits the quantum-entangled polarization of annihilation photons — a phenomenon previously unutilized in medical diagnostics.

## Key Technical Insights

- **Plastic scintillator advantage**: In plastics, annihilation photons interact primarily via Compton effect, providing simultaneous measurement of photon interaction position, time, AND polarization plane — enabling entanglement degree imaging alongside standard PET imaging.

- **Dual-imaging capability**: The J-PET scanner simultaneously determines (1) standard radiopharmaceutical uptake image and (2) quantum entanglement degree image from the relative angle between polarization planes of annihilation photon pairs.

- **Entanglement degree values**: For 68Ga-DOTA-TATE labeled patient, liver and spleen entanglement degrees are smaller than maximally entangled two-photon states but larger than separable photons — demonstrating measurable quantum correlations at clinically relevant activities.

- **Clinical diagnostic potential**: Opens new dimension for clinical diagnostics — entanglement degree as a potential biomarker reflecting tissue microstructure and molecular environment effects on photon polarization correlations.

## Methodology

1. **Radiopharmaceutical injection**: Patient injected with 68Ga-DOTA-TATE (somatostatin receptor targeting).
2. **J-PET detection**: Plastic scintillator rings detect annihilation photons via Compton scattering.
3. **Polarization plane extraction**: From Compton scattering kinematics, extract polarization plane orientation for each photon.
4. **Entanglement degree calculation**: Compute relative angle distribution between polarization planes of coincidence photon pairs.
5. **Image reconstruction**: Generate entanglement degree image parallel to standard PET uptake image.
6. **Tissue analysis**: Compare entanglement degrees across organ regions (liver, spleen, tumor).

## Applications

- Quantum-enhanced PET imaging with additional information channel
- Tissue characterization via entanglement degree as biomarker
- Low-cost quantum imaging (plastic scintillators vs crystal detectors)
- Clinical validation of quantum correlations in human subjects

## Pitfalls

- **Compton scattering statistics**: Polarization measurement via Compton scattering has lower efficiency than dedicated polarimeters — requires higher activity or longer acquisition times.
- **Entanglement degradation**: Scattering in tissue before detection reduces observable entanglement degree — must model transport effects for quantitative interpretation.
- **Not a replacement for standard PET**: Currently complementary — adds entanglement information alongside, not instead of, standard uptake imaging.

## Activation Keywords

- quantum entanglement imaging, J-PET, plastic scintillator PET, polarization-correlated tomography, entanglement degree biomarker, 68Ga quantum imaging, in vivo quantum measurement, clinical quantum diagnostics