Ferry David K
Department of Electrical Engineering and Center for Solid State Electronics Research, Arizona State University, Tempe, AZ 85287-5706, USA.
J Phys Condens Matter. 2009 Nov 25;21(47):474201. doi: 10.1088/0953-8984/21/47/474201. Epub 2009 Nov 5.
Over the past two decades, quantum computing has become a popular and promising approach to trying to solve computationally difficult problems. Missing in many descriptions of quantum computing is just how probability enters into the process. Here, we discuss some simple examples of how uncertainty and probability enter, and how this and the ideas of quantum computing challenge our interpretations of quantum mechanics. It is found that this uncertainty can lead to intrinsic decoherence, and this raises challenges for error correction.
在过去二十年里，量子计算已成为一种试图解决计算难题的流行且有前景的方法。在许多关于量子计算的描述中，缺失的恰恰是概率如何进入这个过程。在此，我们讨论一些关于不确定性和概率如何进入的简单例子，以及这一点和量子计算的理念如何挑战我们对量子力学的诠释。结果发现，这种不确定性会导致内在退相干，这给纠错带来了挑战。
