Swapping path-spin intraparticle entanglement onto spin-spin interparticle entanglement - Quantum PhysicsReport as inadecuate




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Abstract: Based on a scheme that produces an entanglement between the spin and the pathvariables of a single spin-1-2 particle qubit using a beam-splitter and aspin-flipper, we formulate a procedure for transferring this intraparticlehybrid entanglement to an interparticle entanglement between the spin variablesof two other spatially separated spin-1-2 particles which never interact witheach other during the entire process. This procedure of entanglement swappingis accomplished by a Mach-Zehnder setup in conjunction with the Stern-Gerlachmeasuring device, using suitable unitary operations. The proposed protocol,thus, enables the use of intraparticle entanglement as a resource - a featurethat has remained unexplored.



Author: S. Adhikari, A.S. Majumdar, Dipankar Home, Alok Kumar pan

Source: https://arxiv.org/







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