Measurement Device Independent Verification of Quantum Channels
arXiv:1906.11130 · doi:10.1103/PhysRevLett.124.010503
Abstract
The capability to reliably transmit and store quantum information is an essential building block for future quantum networks and processors. Gauging the ability of a communication link or quantum memory to preserve quantum correlations is therefore vital for their technological application. Here, we experimentally demonstrate a measurement-device-independent protocol for certifying that an unknown channel acts as an entanglement-preserving channel. Our results show that, even under realistic experimental conditions, including imperfect single-photon sources and the various kinds of noise---in the channel or in detection---where other verification means would fail or become inefficient, the present verification protocol is still capable of affirming the quantum behaviour in a faithful manner without requiring any trust on the measurement device.
arXiv comment5 pages, 3 figures, 6 pages supplementary materials
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Cited by in corpus (14)
- Quantifying Quantumness of Channels Without Entanglement
- Measurement-Device-Independent Verification of a Quantum Memory
- An Experimentally Verified Approach to non-Entanglement-Breaking Channel Certification
- Verification of Continuous-Variable Quantum Memories
- Position Sensitive Response of a Single-Pixel Large-Area SNSPD
- Certifying high-dimensional quantum channels
- Unified Approach to Witness Nonentanglement-Breaking Quantum Channels
- Entanglement-breaking channels are a quantum memory resource
- Experimentally Certified Transmission of a Quantum Message through an Untrusted and Lossy Quantum Channel via Bell's Theorem
- Calibration-Independent Certification of a Quantum Frequency Converter
- One-step direct measurement of the entangled W states with cross-Kerr nonlinearity
- Certifying the dimensionality of any quantum channel with minimal assumptions
- Semi-device-independent certification of high-dimensional quantum channels
- Device-independent quantum state discrimination