Efficient single-photon entanglement concentration for quantum communications

2013/07/23 by Lan Zhou, Yu-Bo Sheng, Yu‐Bo Sheng
Computer Science · Physics and Astronomy · #Algorithm #Computer science #Current (fluid) #Group (periodic table) #Optical communication #Optics #Photon #Photon entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum information science #Quantum mechanics #Quantum optics #Quantum optics and atomic interactions #State (computer science) #Thermodynamics #W state #quant-ph

paper · pdf · doi:10.1016/j.optcom.2013.10.041

10 pages, 8 figures

arxiv created 2013/07/23 · openalex publication_date 2013/10/25 · arxiv updated 2015/06/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We present two groups of practical entanglement concentration protocols (ECPs) for optical hybrid entangled state (HES). In the first group, it contains two ECPs and both ECPs do not need to know the initial coefficients of the less-entangled state. The second group contains three ECPs and they need to know the initial coefficients. It is shown that the yield of the entanglement concentration in the second group is greater than the first group. Moreover, some protocols are based on the linear optics and can be easily realized under current experiment condition. These protocols may be useful in current hybrid quantum communication.

Citations

• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
• Experimental Demonstration of Single Photon Nonlocality
• Quantum teleportation and Bell’s inequality using single-particle entanglement
• Improving the security of secure direct communication based on the secret transmitting order of particles
• Quantum entanglement for secret sharing and secret splitting
• Quantum cryptography based on Bell’s theorem
• Universal discriminator for completely unknown optical qubits
• Quantum secret sharing
• Purification of Single-Photon Entanglement
• Continuous-time cross-phase modulation and quantum computation
• Quantum computation using weak nonlinearities: Robustness against decoherence
• Long-distance quantum communication with atomic ensembles and linear optics
• Efficient multiparty quantum-secret-sharing schemes