Jordan-Wigner transformation and qubits with nontrivial exchange rule

Abstract

Well-known (spinless) fermionic qubits may need more subtle consideration in comparison with usual (spinful) fermions. Taking into account a model with local fermionic modes, formally only the 'occupied' states |1> could be relevant for antisymmetry with respect to particles interchange, but 'vacuum' state |0> is not. Introduction of exchange rule for such fermionic qubits indexed by some 'positions' may look questionable due to general super-selection principle. However, a consistent algebraic construction of such 'super-indexed' qubits is presented in this work. Considered method has some relation with construction of super-spaces, but it has some differences with standard definition of supersymmety sometimes used for generalizations of qubit model.

LaTeX, 12pt, 16 pages. Comments are welcome. v3: Conclusion added. Conference Quantum Informatics, Moscow, 2021