环境噪声下的多体量子态控制

IF 0.7 4区 物理与天体物理 Q3 COMPUTER SCIENCE, THEORY & METHODS Quantum Information & Computation Pub Date : 2023-09-01 DOI:10.26421/qic23.11-12-3
Zara Yu, Da-Wei Luo
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引用次数: 0

摘要

我们考虑多态系统的量子态控制,该系统由初始态演化为目标态。我们在一个有趣的例子中明确地证明了这种控制方法,这个例子涉及到薛定谔猫态在预定时间通过耦合谐振子链的转移和旋转。我们使用基于梯度的Krotov方法来设计耦合链的时间相关参数,以找到将系统进化到目标状态的最优控制形状。我们证明了规定的量子态控制可以以高保真度实现,并探讨了控制对一般环境噪声的鲁棒性。我们的发现将对存在环境噪声的多体开放量子系统的最优控制感兴趣。
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Many-body quantum state control in the presence of environmental noise
We consider the quantum state control of a multi-state system which evolves an initial state into a target state. We explicitly demonstrate the control method in an interesting case involving the transfer and rotation of a Schr\"{o}dinger cat state through a coupled harmonic oscillator chain at a predetermined time $T$. We use the gradient-based Krotov's method to design the time-dependent parameters of the coupled chain to find an optimal control shape that will evolve the system into a target state. We show that the prescribed quantum state control can be achieved with high fidelity, and the robustness of the control against generic environment noises is explored. Our findings will be of interest for the optimal control of a many-body open quantum system in the presence of environmental noise.
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来源期刊
Quantum Information & Computation
Quantum Information & Computation 物理-计算机:理论方法
CiteScore
1.70
自引率
0.00%
发文量
42
审稿时长
3.3 months
期刊介绍: Quantum Information & Computation provides a forum for distribution of information in all areas of quantum information processing. Original articles, survey articles, reviews, tutorials, perspectives, and correspondences are all welcome. Computer science, physics and mathematics are covered. Both theory and experiments are included. Illustrative subjects include quantum algorithms, quantum information theory, quantum complexity theory, quantum cryptology, quantum communication and measurements, proposals and experiments on the implementation of quantum computation, communications, and entanglement in all areas of science including ion traps, cavity QED, photons, nuclear magnetic resonance, and solid-state proposals.
期刊最新文献
Closed-form analytic expressions for shadow estimation with brickwork circuits Dynamics of one two-level-atom interacting with a multiple cavity modes Fast naviation with icosahedral golden gates Many-body quantum state control in the presence of environmental noise A simpler security proof for 6-state quantum key distribution
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