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1. 发明授权

US09946973B2 Long-time low-latency quantum memory by dynamical decoupling 有权
公开(公告)号：US09946973B2
公开(公告)日：2018-04-17
申请号：US14409411
申请日：2013-06-18
申请人： The University of Sydney , Trustees of Dartmouth College
发明人： Michael J. Biercuk , Kaveh Khodjasteh , Lorenza Viola
IPC分类号： G06N99/00 , G06F3/06 , B82Y10/00
CPC分类号： G06N99/002 , B82Y10/00 , G06F3/061 , G06F3/0656 , G06F3/0673
摘要： This disclosure relates to preserving a quantum state in a quantum memory. A controller of the quantum memory determines based on a characteristic of noise that causes deterioration of the quantum state a dynamical decoupling base sequence. The duration of the base sequence is shorter than or equal to an access latency time of the quantum memory to allow access to the quantum state within the access latency time. Further, the deterioration of the quantum state is bounded to an upper deterioration limit when the base sequence is repeatedly applied to the quantum system. This provides acceptable access times while simultaneously allowing long term storage of data in the quantum state with low error rates. Repeatedly applying the base sequence to the quantum system will first yield an increasing deterioration but that deterioration will eventually reach the upper limit. As a result, over time the error rates will not exceed that upper limit and the quantum state is stable.

2. 发明申请

US20150324705A1 LONG-TIME LOW-LATENCY QUANTUM MEMORY BY DYNAMICAL DECOUPLING 有权
标题翻译：通过动态解除的长时间低时间量子存储器
公开(公告)号：US20150324705A1
公开(公告)日：2015-11-12
申请号：US14409411
申请日：2013-06-18
申请人： The University of Sydney , Trustees of Dartmouth College
发明人： Michael J. Biercuk , Kaveh Khodjasteh , Lorenza Viola
IPC分类号： G06N99/00 , G06F3/06
CPC分类号： G06N99/002 , B82Y10/00 , G06F3/061 , G06F3/0656 , G06F3/0673
摘要： This disclosure relates to preserving a quantum state in a quantum memory. A controller of the quantum memory determines based on a characteristic of noise that causes deterioration of the quantum state a dynamical decoupling base sequence. The duration of the base sequence is shorter than or equal to an access latency time of the quantum memory to allow access to the quantum state within the access latency time. Further, the deterioration of the quantum state is bounded to an upper deterioration limit when the base sequence is repeatedly applied to the quantum system. This provides acceptable access times while simultaneously allowing long term storage of data in the quantum state with low error rates. Repeatedly applying the base sequence to the quantum system will first yield an increasing deterioration but that deterioration will eventually reach the upper limit. As a result, over time the error rates will not exceed that upper limit and the quantum state is stable.
摘要翻译：本公开涉及在量子存储器中保存量子态。量子存储器的控制器基于导致量子态劣化的噪声特性确定动态去耦基序列。基本序列的持续时间短于或等于量子存储器的访问延迟时间，以允许在访问延迟时间内访问量子状态。此外，当将碱基序列重复施加到量子系统时，量子态的劣化被限制为较高的劣化极限。这提供可接受的访问时间，同时允许以低错误率长期存储处于量子状态的数据。重复使用碱基序列到量子系统将首先产生越来越多的劣化，但是劣化将最终达到上限。结果，随着时间的推移，误码率不会超过该上限，量子态是稳定的。

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