Purification of Noisy Measurements and Faithful Distillation of Entanglement

Abstract

We consider entanglement distillation with noisy operations in which quantum measurements that constitute a general quantum operation are particularly noisy. We present a protocol for purifying noisy measurements and show that imperfect local operations can distill entanglement. The protocol works for arbitrary noisy measurements in general and is cost-effective and resource-efficient with single additional qubit per party to resolve the distillation of entanglement. The purification protocol is feasible with currently available quantum technologies and readily applied to entanglement applications.

10 pages, 5 figures

References in corpus (4)

• Entanglement detection
• Device-independent security of quantum cryptography against collective attacks
• Long-distance entanglement purification for quantum communication
• Experimental entanglement distillation of mesoscopic quantum states

Cited by in corpus (3)

• Disti-Mator: an entanglement distillation-based state estimator
• Protocol for Purifying Noisy Preparation and Measurements of Qubits
• Basic entanglement distillation with realistic noise