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quant-ph2023
Effective Rationality for Local Unitary Invariants of Mixed States of Two Qubits
Luca Candelori, Vladimir Y. Chernyak, John R. Klein +1
We calculate the field of rational local unitary invariants for mixed states of two qubits, by employing methods from algebraic geometry. We prove that this field is rational (i.e.…
math.AG2023
Rational Local Unitary Invariants of Symmetrically Mixed States of Two Qubits
Luca Candelori, Vladimir Y. Chernyak, John R. Klein +1
We compute the field of rational local unitary invariants for locally maximally mixed states and symmetrically mixed states of two qubits. In both cases, we prove that the field of…