Cooper-pair condensates with nonclassical long-range order on quantum devices
Cooper-pair condensates with nonclassical long-range order on quantum devices
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DOI：
10.1103/physrevresearch.4.013003
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发表时间：
2021-02
影响因子：
4.2
通讯作者：
LeeAnn M. Sager;D. Mazziotti
中科院分区：
文献类型：
--
作者：
LeeAnn M. Sager;D. Mazziotti
量子信息的一个重要问题是非经典长程有序在量子计算机上的实际演示。具有非经典长程有序的量子系统最著名的例子之一是超导体。在这里，我们在量子计算机上实现了类似库珀的量子位配对，这可以通过乔丹-维格纳映射解释为超导或超流体状态。我们通过测量双电子约化密度矩阵的大 O ( N ) 特征值严格确认了量子长程有序。最大量子长程有序的演示是朝着在量子计算机上对具有显着量子长程有序的现象（例如超导性和超流动性）进行更复杂建模的重要一步。
An important problem in quantum information is the practical demonstration of non-classical long-range order on quantum computers. One of the best known examples of a quantum system with non-classical long-range order is a superconductor. Here we achieve Cooper-like pairing of qubits on a quantum computer, which can be interpreted as superconducting or superfluid states via a Jordan-Wigner mapping. We rigorously confirm the quantum long-range order by measuring the large O ( N ) eigenvalue of the two-electron reduced density matrix. The demonstration of maximal quantum long-range order is an important step towards more complex modeling of phenomena with significant quantum long-range order on quantum computers such as superconductivity and superfluidity.