Journal
APPLIED MAGNETIC RESONANCE
Volume 31, Issue 1-2, Pages 237-252Publisher
SPRINGER WIEN
DOI: 10.1007/BF03166259
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In the process coined quantum teleportation the complete information contained in an input quantum state psi(i) is teleported to a distant location at which the original quantum state is regenerated as teleported output state psi(i). This paper presents the proof-of-feasibility concept of a quantum teleportation experiment during which an arbitrary input quantum state is teleported across a biological membrane. As particular aspect it is emphasized that all essential subprocesses of the usual quantum teleportation scheme are suggested to be realized by free running reaction processes in a native biological membrane-bound reaction center complex with only one significant adaptation required at the input side. The first process of generation of a spin-correlated (Einstein-Podolsky Rosen) pair of particles (Bell-state source) is a naturally occurring process realized in photosynthetic reaction centers by the primary processes of light-induced charge separation across the membrane. The second process is the so-called Bell-state measurement, which is able to store the complete information of the input quantum state. It is suggested to be realized by a fast spin-dependent recombination between one pair partner spin and a properly engineered input spin. Under suitable recombination conditions the remaining second pair partner spin, situated at the receiver location on the other side of the membrane, is shown to end up in the quantum state identical to that of the initial input state due to the fixed spin correlation of the Bell-state source and the particular spin selectivity of the recombination process. Thus, the input (spin) quantum state is teleported from the spin near the (electron charge) donor side to the acceptor side of the membrane-bound photosynthetic reaction center complex. A comprehensive discussion is presented for this quantum teleportation concept using photosynthetic reaction centers as the quantum channel of communication. Standard electron paramagnetic resonance techniques can be used to set up the input state and read out or hand over the output state for subsequent quantum information processing.
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