Ultrafast initialization and QND-readout of a spin qubit via control of nanodot-vacuum coupling
arXiv:cond-mat/0408148 · doi:10.1103/PhysRevB.72.081306
Abstract
Ultrafast initialization enables fault-tolerant processing of quantum information while QND readout enables scalable quantum computation. By spatially assembling photon resonators and wave-guides around an n-doped nanodot and by temporally designing optical pump pulses, an efficient quantum pathway can be established from an electron spin to a charged exciton to a cavity photon and finally to a flying photon in the waveguide. Such control of vacuum-nanodot coupling can be exploited for ultrafast initialization and QND readout of the spin, which are particularly compatible with the optically driven spin quantum computers.
arXiv comment4 pages 3 figures
References in corpus (13)
- Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer
- The Physical Implementation of Quantum Computation
- Quantum state transfer and entanglement distribution among distant nodes in a quantum network
- Single-shot read-out of an individual electron spin in a quantum dot
- Spin-based all-optical quantum computation with quantum dots: understanding and suppressing decoherence
- Cavity QED and quantum information processing with "hot" trapped atoms
- Full observation of single-atom dynamics in cavity QED
- High efficiency photon counting using stopped light
- Atomic vapor-based high efficiency optical detectors with photon number resolution
- Measurement efficiency and n-shot read out of spin qubits
- Spin Readout and Initialization in a Semiconductor Quantum Dot
- Nanodot-Cavity Electrodynamics and Photon Entanglement
- Single spin measurement using spin-orbital entanglement
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