Quantum Bayes rule
Quantum Bayes rule
复制标题
DOI：
10.1103/physreva.64.014305
复制
发表时间：
2001-07-01
影响因子：
2.9
通讯作者：
Caves, CM
中科院分区：
文献类型：
--
作者：
Schack, R;Brun, TA;Caves, CM
我们状态的统计推断的贝叶斯规则的量子版本，并给出一个简单的一般推导的框架内的广义测量。如果系统的N个副本的初始状态是可交换的，则该规则可以应用于对系统的N个副本的测量。作为示例，我们将该规则应用于N个量子位。最后，我们表明，量子状态估计通过最大熵的原则是从根本上不同，通过量子贝叶斯规则。
We state a quantum Version of the Bayes rule for statistical inference and give a simple general derivation within the framework of generalized measurements. The rule can be applied to measurements on N copies of a system if the initial state of the N copies is exchangeable. As an illustration, we apply the rule to N qubits. Finally, we show that quantum state estimates derived via the principle of maximum entropy are fundamentally different from those obtained via the quantum Bayes rule.