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Distributed quantum computation requires that quantum operations may be acted on remote logical qubits. We investigate the possibility of the distributed quantum computation for nonlocal photons assisted by cavity quantum electrodynamics. We first give a compact circuit for the controlled-NOT gate on a remote two-photon system. For the Toffoli gate, we introduce two circuits for a bipartite system...
Time-resolved far-field measurements of Quantum Cascade lasers show intra-pulse beam steering on the nanosecond scale. Spatially-dependent spectra at different pulse times show evidence of frequency locking between transverse modes when the beam steering happens. The light pulse instability has been found to reduce the device received output power by 20% in some cases. A proposal on how to reduce...
Time-resolved far-field measurements of Quantum Cascade lasers show beam steering on the few nano-second scale. Spatially resolved spectra show that the beam steering is accompanied with frequency locking between transverse modes.
A system of 3-channel DPC (digital pulse compression) system based on FPGA is designed. Some experimental data and results analysis of this system are given. This method of implementing DPC has the advantages of high speed and high reliability. The basic principle of DPC is introduced firstly. Then the composition of a DPC system based on Virtex-II family FPGA and its operating principle is presented...
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