Approximate Randomization of Quantum States With Fewer Bits of Key
Approximate Randomization of Quantum States With Fewer Bits of Key
Randomization of quantum states is the quantum analogue of the classical oneātime pad. We present an improved, efficient construction of an approximately randomizing map that uses O(d/Īµ2) Pauli operators to map any dādimensional state to a state that is within trace distance Īµ of the completely mixed state. Our bound ā¦