Department of Physics and NMR Research Centre, Indian Institute of Science, Bangalore, India.
Phys Rev Lett. 2011 Feb 25;106(8):080401. doi: 10.1103/PhysRevLett.106.080401. Epub 2011 Feb 22.
The no-hiding theorem says that if any physical process leads to bleaching of quantum information from the original system, then it must reside in the rest of the Universe with no information being hidden in the correlation between these two subsystems. Here, we report an experimental test of the no-hiding theorem with the technique of nuclear magnetic resonance. We use the quantum state randomization of a qubit as one example of the bleaching process and show that the missing information can be fully recovered up to local unitary transformations in the ancilla qubits.
无隐藏定理指出，如果任何物理过程导致量子信息从原始系统中被漂白，那么它必须存在于宇宙的其余部分，而在这两个子系统之间不存在信息隐藏。在这里，我们使用核磁共振技术报告了对无隐藏定理的实验检验。我们使用量子比特的量子态随机化作为漂白过程的一个例子，并表明在辅助量子比特中的局部幺正变换下，可以完全恢复丢失的信息。
