Quantum Information Processing Using the Exchange Interaction

Abstract

In this paper, I propose new models of quantum information processing using the exchange interaction in physical systems. The partial SWAP operator that can be realized using the exchange interaction is used as the underlying resource for defining models of quantum computation, quantum communication, quantum memory and decoherence-free subspaces. Given the noncommutativity of these operators (for adjacent operators operating on a common qubit), a number of quantum states and entanglement patters can be obtained. This zoo of states can be classified, due to the parity constraints and permutation symmetry of the states, into invariant subspaces that are used for the definition of some of the applications in this paper.

Theory of Byuon and Pharmaceuticals of the Future

“…It should be noted that in the literature there are a huge number of articles devoted to the search for quantum means of information transmission [48] [49]. But they are all based on classical quantum mechanics, on the mixing of psi-functions.…”

Polarization-path-frequency entanglement using interferometry and frequency shifters

“…With increase in θ we can see a decrease in the value of negativity. These numerical plots are obtained using the initial state given in equation (7). In the inset we show the effect of noise on N F−Pos by introducing depolarizing channel on the polarization degree of freedom.…”

“…Entanglement has been the underlying resource for various quantum mechanical applications. Entanglement across and within varied degrees of freedom quantum particle has been even more useful in optimizing the number of physical qubits and the logical quantum mechanical operations and applications one can undertake with it [1][2][3][4][5][6][7]. When it comes to photonic qubits, we have had hyperentanglement across various degrees of freedom: polarization-path [8], polarization-OAM [9], polarization-frequency [10,11] as well as polarizationtime bin [12,13].…”