Efficient generation of a maximally entangled state by repeated on- and off-resonant scattering of ancilla qubits
Efficient generation of a maximally entangled state by repeated on- and off-resonant scattering of ancilla qubits
A scheme for preparing two fixed noninteracting qubits in a maximally entangled state is presented. By repeating on- and off-resonant scattering of ancilla qubits, the target qubits are driven from an arbitrary initial state into a singlet state with probability 1 (perfect efficiency). Neither the preparation nor the post-selection of …