A two-qubit photonic quantum processor and its application to solving systems of linear equations

作者：Barz Stefanie^*; Kassal Ivan; Ringbauer Martin; Lipp Yannick Ole; Dakic Borivoje; Aspuru Guzik Alan; Walther Philip

来源：Scientific Reports, 2014, 4(1): 6115.

DOI：10.1038/srep06115

Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.

• 出版日期2014-8-19