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The log of a quantum state and qubit local unitary invariants
log quantum state qubit local unitary invariants
2010/10/19
Local unitary invariants of multipartite states fall into families related by the tracing-out of subsystems. In the case of pure qubit systems, there is a family that accounts for about half the total...
Efficient factorization with a single pure qubit and $log N$ mixed qubits
Efficient factorization single pure qubit $log N$ mixed qubits
2010/10/15
We suggest a tunable optical device to synthesize Fock states and their superpositions starting
from a coherent source. The scheme involves an avalanche triggering photodetector and a ring
cavity co...