Optical communication with two-photon coherent states—Part II: photoemissive detection and structured receiver performance, " IEEE Trans. Optical communication with two-photon coherent states—Part III: quantum measurements realizable with photoemissive detec­ tors, " IEEE Trans. Quantum noise and excess noise in optical homodyne and het­ erodyne receivers, " IEEE J.

A quantum computer, if built, will be to an ordinary computer as a hydrogen bomb is to gunpowder, at least for some types of computations. Today no quantum computer exists, beyond laboratory prototypes capable of solving only tiny problems, and many practical problems remain to be solved. Yet the theory of quantum computing has advanced significantly in the past decade, and is becoming a signif...

We study nondeterministic quantum algorithms for Boolean functions f. Such algorithms have positive acceptance probability on input x iff f (x) = 1. In the setting of query complexity, we show that the nondeterministic quantum complexity of a Boolean function is equal to its " nondeterministic polynomial " degree. We also prove a quantum-vs.-classical gap of 1 vs. n for nondeterministic query c...

while the application of optical and photonic technologies in the communications, computing, medicine and industrial manufacturing has been growing rapidly, the miniaturization of these technologies has been slow due to the limitation on the diffraction. however, the developments of nanoscale components and guiding methods are continuing with a rapid pace. since waveguiding is a fundamental iss...