160 citations · 213 across the 9 of their papers we have counts for
6 papers · 1 filter
Charge-to-spin conversion of electron entanglement states and spin-interaction-free solid-state quantum computation
Wei-Min Zhang, Yin-Zhong Wu, Chopin Soo +1
Without resorting to spin-spin coupling, we propose a scalable spin quantum computing scheme assisted with a semiconductor multiple-quantum-dot structure. The techniques of single…
Implementing controlled-NOT gate based on free spin qubits with semiconductor quantum-dot array
Yin-Zhong Wu, Wei-Min Zhang
Based on electron spins in semiconductor quantum dots as qubits, a new quantum controlled-NOT(CNOT) gate is constructed in solid nanostructure without resorting to spin-spin intera…
Non-equilibrium theory of charge qubit decoherence in the quantum point contact measurement
Ming-Tsung Lee, Wei-Min Zhang
A non-equilibrium theory describing the charge qubit dynamics measured by a quantum point contact is developed based on Schwinger-Keldysh's approach. Using the real-time diagram te…
Non-Markovian entanglement dynamics of noisy continuous variable quantum channels
Jun-Hong An, Wei-Min Zhang
We investigate the entanglement dynamics of continuous-variable quantum channels in terms of an entangled squeezed state of two cavity fields in a general non-Markovian environment…
Exact wave-packet decoherence dynamics in a discrete spectrum environment
Matisse W. Y. Tu, Wei-Min Zhang
We find an exact analytical solution of the reduced density matrix from the Feynman-Vernon influence functional theory for a wave packet influenced by an environment containing a f…
Non-Markovian decoherence dynamics of entangled coherent states
Jun-Hong An, Mang Feng, Wei-Min Zhang
We microscopically model the decoherence dynamics of entangled coherent states under the influence of vacuum fluctuation. We derive an exact master equation with time-dependent coe…