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

ABSTRACT: 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.

SUBMITTER: Barz S

PROVIDER: S-EPMC4137340 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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

Barz Stefanie S Kassal Ivan I Ringbauer Martin M Lipp Yannick Ole YO Dakić Borivoje B Aspuru-Guzik Alán A Walther Philip P

Scientific reports 20140819

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 i ...[more]

PMID: 25135432

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