Electronic entanglement purification scheme enhanced by charge detections

Xun-Li Feng, L. C. Kwek, and C. H. Oh

Phys. Rev. A 71, 064301 – Published 14 June 2005

Abstract

We present an entanglement purification scheme for the mixed entangled states of electrons with the aid of charge detections. Our scheme adopts the electronic polarizing beam splitters rather than the controlled-NOT (CNOT) operations, but the total successful probability of our scheme can reach the quantity as large as that of the the CNOT-operation-based protocol and twice as large as that of linear-optics-based protocol for the purification of photonic entangled states. Thus our scheme can achieve a high successful prabability without the usage of CNOT operations.

Received 14 January 2005

DOI:https://doi.org/10.1103/PhysRevA.71.064301

Authors & Affiliations

Xun-Li Feng^1,2, L. C. Kwek^1,3, and C. H. Oh¹

¹Department of Physics, Blk S12, National University of Singapore 2, Science Drive 3, 117542 Singapore
²State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai, 201800, China
³National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, 639798 Singapore

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Vol. 71, Iss. 6 — June 2005

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