Phys.org November 30, 2024 To enable parallel computations optical computing leverages interference, a cornerstone of quantum computing algorithms. Researchers in South Africa blended quantum computing with classical structured light by formulating the process of photonic matrix multiplication using quantum mechanical principles such as state superposition and demonstrated Deutsch–Jozsa’s algorithm, by elucidating the inherent tensor product structure within the Cartesian transverse degrees of freedom of light. They demonstrated the operation of a Hadamard gate. According to the researchers their approach show it is adaptable to various algorithms, and advances the use of structured light for quantum information processing… read more. Open […]
Tag Archives: Quantum algorithms
A three-qubit entangled state has been realized in a fully controllable array of spin qubits in silicon
Phys.org September 10, 2021 Researchers in Japan have developed a device consisting of a triple quantum dot on a silicon/silicon–germanium heterostructure and controlled through aluminum gates. Each quantum dot can host one electron, whose spin-up and spin-down states encode a qubit. An on-chip magnet generates a magnetic-field gradient that separates the resonance frequencies of the three qubits, so that they can be individually addressed. They first entangled two of the qubits by implementing a two-qubit gate and then realized three-qubit entanglement by combining the third qubit and the gate. The resulting three-qubit state had a remarkably high state fidelity of […]