Performing Fault-Tolerant non-Clifford Gates via Coding

Performing Fault-Tolerant non-Clifford Gates via Coding A fault-tolerant non-Clifford gate for the surface code in two dimensions Abstract +  Fault-tolerant logic gates will consume a large proportion of the resources of a two-dimensional quantum computing architecture. Here we show how to perform a fault-tolerant non-Clifford gate with the surface code; a quantum error-correcting code now […]

Research: Let The Quantum Server Search Alice’s Encrypted Data Without Decryption

Research: Let The Quantum Server Search Alice’s Encrypted Data Without Decryption Quantum Search on Encrypted Data Based on Quantum Homomorphic Encryption Abstract We propose a homomorphic search protocol based on quantum homomorphic encryption, in which a client Alice with limited quantum ability can give her encrypted data to a powerful but untrusted quantum server and […]

Silicon Based Qubit Calculation Accuracy

Silicon Based Qubit Calculation Accuracy.  UNSW, Sydney.  Quantum world-first: researchers can now tell how accurate two-qubit calculations in silicon really are.  After being the first team to create a two-qubit gate in silicon in 2015, UNSW Sydney engineers are breaking new ground again: they have measured the accuracy of silicon two-qubit operations for the first […]

Silicon Qubit Fidelity and Noise

Silicon Qubit Fidelity and Noise.  Qubits appear to be the flavor this week; at least in the output from media sources.  Lack of coherence still plaguing stability of the quantum bit.  Arguably the most fundamental aspect for quantum computing.  Silicon Qubit Fidelities Approaching Incoherent Noise Limits Via Pulse Engineering.  Abstract. Spin qubits created from gate-defined […]