Entanglement properties of optical coherent states under amplitude damping
Ricardo Wickert, Nadja Kolb Bernardes, Peter van Loock
TL;DR
This paper analyzes how optical coherent-state qubits lose entanglement under amplitude damping, evaluating error correction codes and providing quantitative bounds on entanglement degradation due to photon loss.
Contribution
It offers the first comprehensive quantitative analysis of photon-loss codes for coherent-state qubits, focusing on entanglement under amplitude damping.
Findings
Entanglement decreases with damping and non-orthogonality.
Error correction codes can partially recover entanglement.
Upper bounds on entanglement loss are established.
Abstract
Through concurrence, we characterize the entanglement properties of optical coherent-state qubits subject to an amplitude damping channel. We investigate the distillation capabilities of known error correcting codes and obtain upper bounds on the entanglement depending on the non-orthogonality of the coherent states and the channel damping parameter. This work provides a first, full quantitative analysis of these photon-loss codes which are naturally reminiscent of the standard qubit codes against Pauli errors.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.