Quantum information processing beyond polarization encoding
Rainer Kaltenbaek · 2011
I will present recent research results in optical one-way quantum computation and quantum information processing that I have been involved in. The first topic is an optimization of how to use the limited resources available in typical quantum-optics experiments. We show that the number of qubits available for implementing quantum computational circuits can be increased by replacing some of the projective single-qubit measurements in one-way quantum computation with generalized measurements. In particular, while one needs two single-qubit measurements to initialize an arbitrary logical qubit state, a single POVM is enough to achieve the sameI will present recent research results in optical one-way quantum computation and quantum information processing that I have been involved in. The first topic is an optimization of how to use the limited resources available in typical quantum-optics experiments. We show that the number of qubits available for implementing quantum computational circuits can be increased by replacing some of the projective single-qubit measurements in one-way quantum computation with generalized measurements. In particular, while one needs two single-qubit measurements to initialize an arbitrary logical qubit state, a single POVM is enough to achieve the same.