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A two-qubit photonic quantum processor and its application to solving systems of linear equations
Stefanie Barz1, Ivan Kassal2, Martin Ringbauer1
11] Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria [2].
Scientific Reports
|August 20, 2014
Summary
Researchers demonstrate a photonic quantum processor capable of applying two consecutive entangling gates on qubits. This breakthrough addresses a key challenge in building large-scale photonic quantum computers and solving linear systems.
Area of Science:
- Quantum Information Science
- Photonic Quantum Computing
- Quantum Algorithms
Background:
- Large-scale quantum computers necessitate extensive sequences of entangling gates.
- Photonic architectures excel at single-qubit gates but struggle with consecutive two-qubit entangling gates.
Purpose of the Study:
- To overcome the obstacle of applying consecutive two-qubit entangling gates in photonic systems.
- To demonstrate a flexible two-qubit photonic quantum processor.
Main Methods:
- Development of a two-qubit photonic quantum processor.
- Implementation of two consecutive controlled-NOT (CNOT) gates on the same pair of polarization-encoded qubits.
Main Results:
- Successfully demonstrated two consecutive CNOT gates on polarization-encoded qubits.
- Showcased the processor's flexibility by implementing the quantum algorithm for solving systems of linear equations.
Conclusions:
- The developed photonic quantum processor effectively implements consecutive entangling gates.
- This work represents a significant step towards scalable photonic quantum computation and quantum algorithm execution.
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