Local Density Matrices of Many-Body States in the Constant Weight Subspaces
نویسندگان
چکیده
منابع مشابه
Gibbs States and the Consistency of Local Density Matrices
Suppose we have an n-qubit system, and we are given a collection of local density matrices ρ1, . . . , ρm, where each ρi describes some subset of the qubits. We say that ρ1, . . . , ρm are “consistent” if there exists a global state σ (on all n qubits) whose reduced density matrices match ρ1, . . . , ρm. We prove the following result: if ρ1, . . . , ρm are consistent with some state σ ≻ 0, then...
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ژورنال
عنوان ژورنال: Reports on Mathematical Physics
سال: 2019
ISSN: 0034-4877
DOI: 10.1016/s0034-4877(19)30049-7