Entanglement verification with finite data
arXiv:1005.0003 · doi:10.1103/PhysRevLett.105.170501
Abstract
Suppose an experimentalist wishes to verify that his apparatus produces entangled quantum states. A finite amount of data cannot conclusively demonstrate entanglement, so drawing conclusions from real-world data requires statistical reasoning. We propose a reliable method to quantify the weight of evidence for (or against) entanglement, based on a likelihood ratio test. Our method is universal in that it can be applied to any sort of measurements. We demonstrate the method by applying it to two simulated experiments on two qubits. The first measures a single entanglement witness, while the second performs a tomographically complete measurement.
4 pages, 3 pretty pictures
References in corpus (9)
- Entanglement detection
- Scalable multi-particle entanglement of trapped ions
- Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
- Quantum Teleportation Between Distant Matter Qubits
- Manipulating multi-photon entanglement in waveguide quantum circuits
- Experimental demonstration of three-color entanglement
- High-fidelity transmission of entanglement over a high-loss freespace channel
- On experimental procedures for entanglement verification
- An Entanglement Filter